For a given set of browsers, what APIs are in all of them and how many days it take for the API to land in the first browser to the last.
| Last in Firefox | Last in Safari | |
|---|---|---|
| First in Firefox | 5295 | |
| First in Safari | 3960 |
9255 APIs took an average of 857.56 days to become available to use.
API breakdown:
| DOM API APIs | DOM API TTA | CSS APIs | CSS TTA | HTML APIs | HTML TTA | JS APIs | JS TTA | HTTP APIs | HTTP TTA | WebAssembly APIs | WebAssembly TTA | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003 | 456 | 795.76 | 242 | 630.94 | 111 | 537.29 | 286 | 517.01 | 58 | 599.14 | 0 | NaN |
| 2004 | 439 | 1160.82 | 139 | 1720.78 | 238 | 1471.24 | 32 | 1207.34 | 4 | 3269.00 | 0 | NaN |
| 2005 | 314 | 949.70 | 47 | 1892.00 | 4 | 370.50 | 13 | 1624.08 | 0 | NaN | 0 | NaN |
| 2006 | 15 | 948.73 | 11 | 931.36 | 5 | 2038.60 | 0 | NaN | 4 | 511.00 | 0 | NaN |
| 2007 | 115 | 1550.83 | 51 | 1875.82 | 2 | 928.00 | 0 | NaN | 0 | NaN | 0 | NaN |
| 2008 | 332 | 1211.59 | 43 | 1163.14 | 20 | 767.95 | 4 | 1733.50 | 1 | 720.00 | 0 | NaN |
| 2009 | 162 | 643.17 | 50 | 1056.86 | 11 | 1138.55 | 5 | 150.00 | 10 | 148.00 | 0 | NaN |
| 2010 | 145 | 752.88 | 53 | 876.85 | 35 | 1012.60 | 7 | 504.00 | 1 | 435.00 | 0 | NaN |
| 2011 | 333 | 707.93 | 49 | 1226.02 | 28 | 536.07 | 83 | 605.30 | 1 | 945.00 | 0 | NaN |
| 2012 | 367 | 764.57 | 78 | 1000.96 | 26 | 1019.08 | 27 | 962.44 | 6 | 188.67 | 0 | NaN |
| 2013 | 347 | 1049.58 | 83 | 1008.84 | 10 | 904.30 | 70 | 791.21 | 17 | 426.88 | 0 | NaN |
| 2014 | 295 | 1144.16 | 106 | 1256.71 | 4 | 1694.75 | 94 | 620.61 | 0 | NaN | 0 | NaN |
| 2015 | 297 | 974.41 | 105 | 1226.67 | 8 | 639.00 | 79 | 369.42 | 6 | 1075.67 | 0 | NaN |
| 2016 | 372 | 884.31 | 51 | 1182.65 | 17 | 910.82 | 57 | 136.16 | 11 | 470.09 | 0 | NaN |
| 2017 | 559 | 1168.19 | 151 | 655.54 | 10 | 368.60 | 34 | 368.59 | 4 | 759.00 | 28 | 196.00 |
| 2018 | 187 | 779.80 | 59 | 1091.12 | 15 | 956.53 | 23 | 382.09 | 14 | 1158.43 | 9 | 835.00 |
| 2019 | 129 | 1030.77 | 121 | 706.36 | 11 | 792.64 | 34 | 505.32 | 6 | 257.00 | 0 | NaN |
| 2020 | 176 | 455.97 | 129 | 459.88 | 10 | 873.80 | 74 | 295.86 | 2 | 503.00 | 6 | 394.67 |
| 2021 | 141 | 502.85 | 36 | 517.36 | 3 | 353.33 | 33 | 394.64 | 5 | 533.80 | 9 | 199.11 |
| 2022 | 212 | 289.22 | 106 | 351.99 | 8 | 245.00 | 24 | 368.63 | 9 | 261.11 | 0 | NaN |
| 2023 | 183 | 296.59 | 39 | 171.21 | 17 | 225.12 | 26 | 279.04 | 5 | 208.20 | 4 | 343.25 |
| 2024 | 55 | 84.04 | 41 | 106.02 | 0 | NaN | 16 | 56.56 | 0 | NaN | 0 | NaN |
There is a natural tension on the web with respect to browser engines. Every engine has their own set of priorities which define the level of investment that they choose to make and on which areas they choose to make it.
A developer naturally wants their experiences to be available to the widest audience possible and these differing priorities create an unevenness on the platform (a lumpiness) making it harder for developers to build experiences that work everywhere.
This section highlights where browsers are pushing and pulling on the platform.
This table is designed to show which browsers are pushing on the platform the most.
Adding features to quickly is not always desired because developers are unlikely to adopt those features in their sites or apps.
| Year | DOM API | DOM API TTA | CSS | CSS TTA | HTML | HTML TTA | JS | JS TTA | HTTP | HTTP TTA | WebAssembly | WebAssembly TTA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003 | ||||||||||||
| Safari | 456 | 795.76 | 242 | 630.94 | 111 | 537.29 | 286 | 517.01 | 58 | 599.14 | 0 | NaN |
| 2004 | ||||||||||||
| Firefox | 408 | 1159.11 | 94 | 2357.39 | 226 | 1488.16 | 32 | 1207.34 | 4 | 3269.00 | 0 | NaN |
| Safari | 31 | 1183.32 | 45 | 390.98 | 12 | 1152.50 | 0 | NaN | 0 | NaN | 0 | NaN |
| 2005 | ||||||||||||
| Firefox | 252 | 816.65 | 28 | 1013.54 | 1 | 840.00 | 9 | 696.00 | 0 | NaN | 0 | NaN |
| Safari | 62 | 1490.50 | 19 | 3186.58 | 3 | 214.00 | 4 | 3712.25 | 0 | NaN | 0 | NaN |
| 2006 | ||||||||||||
| Firefox | 15 | 948.73 | 11 | 931.36 | 5 | 2038.60 | 0 | NaN | 4 | 511.00 | 0 | NaN |
| 2007 | ||||||||||||
| Safari | 115 | 1550.83 | 51 | 1875.82 | 2 | 928.00 | 0 | NaN | 0 | NaN | 0 | NaN |
| 2008 | ||||||||||||
| Safari | 107 | 811.78 | 36 | 890.36 | 19 | 789.63 | 0 | NaN | 0 | NaN | 0 | NaN |
| Firefox | 225 | 1401.73 | 7 | 2566.00 | 1 | 356.00 | 4 | 1733.50 | 1 | 720.00 | 0 | NaN |
| 2009 | ||||||||||||
| Safari | 138 | 561.04 | 40 | 1141.70 | 11 | 1138.55 | 3 | 22.00 | 10 | 148.00 | 0 | NaN |
| Firefox | 24 | 1115.38 | 10 | 717.50 | 0 | NaN | 2 | 342.00 | 0 | NaN | 0 | NaN |
| 2010 | ||||||||||||
| Safari | 117 | 744.87 | 45 | 891.56 | 35 | 1012.60 | 7 | 504.00 | 1 | 435.00 | 0 | NaN |
| Firefox | 28 | 786.36 | 8 | 794.13 | 0 | NaN | 0 | NaN | 0 | NaN | 0 | NaN |
| 2011 | ||||||||||||
| Firefox | 286 | 606.36 | 22 | 1614.45 | 26 | 537.27 | 46 | 263.33 | 1 | 945.00 | 0 | NaN |
| Safari | 47 | 1326.04 | 27 | 909.52 | 2 | 520.50 | 37 | 1030.46 | 0 | NaN | 0 | NaN |
| 2012 | ||||||||||||
| Safari | 218 | 687.89 | 31 | 971.55 | 23 | 1138.17 | 3 | 778.33 | 0 | NaN | 0 | NaN |
| Firefox | 149 | 876.76 | 47 | 1020.36 | 3 | 106.00 | 24 | 985.46 | 6 | 188.67 | 0 | NaN |
| 2013 | ||||||||||||
| Firefox | 216 | 1326.50 | 32 | 1174.41 | 10 | 904.30 | 59 | 750.31 | 13 | 212.54 | 0 | NaN |
| Safari | 131 | 592.98 | 51 | 904.96 | 0 | NaN | 11 | 1010.64 | 4 | 1123.50 | 0 | NaN |
| 2014 | ||||||||||||
| Safari | 36 | 430.67 | 8 | 933.38 | 1 | 208.00 | 3 | 184.33 | 0 | NaN | 0 | NaN |
| Firefox | 259 | 1243.34 | 98 | 1283.10 | 3 | 2190.33 | 91 | 634.99 | 0 | NaN | 0 | NaN |
| 2015 | ||||||||||||
| Firefox | 286 | 989.31 | 72 | 1381.69 | 8 | 639.00 | 71 | 380.28 | 6 | 1075.67 | 0 | NaN |
| Safari | 11 | 587.00 | 33 | 888.42 | 0 | NaN | 8 | 273.00 | 0 | NaN | 0 | NaN |
| 2016 | ||||||||||||
| Firefox | 307 | 930.10 | 28 | 1210.93 | 9 | 982.67 | 31 | 108.94 | 9 | 513.89 | 0 | NaN |
| Safari | 65 | 668.06 | 23 | 1148.22 | 8 | 830.00 | 26 | 168.62 | 2 | 273.00 | 0 | NaN |
| 2017 | ||||||||||||
| Firefox | 396 | 1353.16 | 92 | 633.55 | 7 | 417.14 | 31 | 364.77 | 4 | 759.00 | 28 | 196.00 |
| Safari | 163 | 718.81 | 59 | 689.83 | 3 | 255.33 | 3 | 408.00 | 0 | NaN | 0 | NaN |
| 2018 | ||||||||||||
| Firefox | 154 | 738.05 | 52 | 1160.81 | 1 | 1644.00 | 17 | 294.00 | 13 | 1206.00 | 9 | 835.00 |
| Safari | 33 | 974.64 | 7 | 573.43 | 14 | 907.43 | 6 | 631.67 | 1 | 540.00 | 0 | NaN |
| 2019 | ||||||||||||
| Firefox | 63 | 708.02 | 96 | 731.38 | 4 | 684.25 | 32 | 533.31 | 5 | 162.60 | 0 | NaN |
| Safari | 66 | 1338.85 | 25 | 610.28 | 7 | 854.57 | 2 | 57.50 | 1 | 729.00 | 0 | NaN |
| 2020 | ||||||||||||
| Safari | 66 | 585.64 | 11 | 720.82 | 3 | 1176.00 | 1 | 70.00 | 0 | NaN | 1 | 98.00 |
| Firefox | 110 | 378.17 | 118 | 435.56 | 7 | 744.29 | 73 | 298.96 | 2 | 503.00 | 5 | 454.00 |
| 2021 | ||||||||||||
| Firefox | 20 | 411.10 | 23 | 531.65 | 0 | NaN | 19 | 143.11 | 5 | 533.80 | 1 | 664.00 |
| Safari | 121 | 518.02 | 13 | 492.08 | 3 | 353.33 | 14 | 736.00 | 0 | NaN | 8 | 141.00 |
| 2022 | ||||||||||||
| Firefox | 129 | 201.12 | 30 | 366.10 | 4 | 55.00 | 2 | 289.50 | 1 | 76.00 | 0 | NaN |
| Safari | 83 | 426.14 | 76 | 346.42 | 4 | 435.00 | 22 | 375.82 | 8 | 284.25 | 0 | NaN |
| 2023 | ||||||||||||
| Safari | 161 | 321.38 | 19 | 253.21 | 16 | 234.44 | 20 | 330.00 | 5 | 208.20 | 0 | NaN |
| Firefox | 22 | 115.18 | 20 | 93.30 | 1 | 76.00 | 6 | 109.17 | 0 | NaN | 4 | 343.25 |
| 2024 | ||||||||||||
| Safari | 21 | 88.81 | 17 | 52.76 | 0 | NaN | 2 | 27.00 | 0 | NaN | 0 | NaN |
| Firefox | 34 | 81.09 | 24 | 143.75 | 0 | NaN | 14 | 60.79 | 0 | NaN | 0 | NaN |
This table is designed to show which browsers are pulling on the platform the most.
| Year | DOM API count | DOM API TTA | CSS count | CSS TTA | HTML count | HTML TTA | JS count | JS TTA | HTTP count | HTTP TTA | WebAssembly count | WebAssembly TTA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003 | ||||||||||||
| Firefox | 456 | 795.76 | 242 | 630.94 | 111 | 537.29 | 286 | 517.01 | 58 | 599.14 | 0 | NaN |
| 2004 | ||||||||||||
| Safari | 408 | 1159.11 | 94 | 2357.39 | 226 | 1488.16 | 32 | 1207.34 | 4 | 3269.00 | 0 | NaN |
| Firefox | 31 | 1183.32 | 45 | 390.98 | 12 | 1152.50 | 0 | NaN | 0 | NaN | 0 | NaN |
| 2005 | ||||||||||||
| Safari | 252 | 816.65 | 28 | 1013.54 | 1 | 840.00 | 9 | 696.00 | 0 | NaN | 0 | NaN |
| Firefox | 62 | 1490.50 | 19 | 3186.58 | 3 | 214.00 | 4 | 3712.25 | 0 | NaN | 0 | NaN |
| 2006 | ||||||||||||
| Safari | 15 | 948.73 | 11 | 931.36 | 5 | 2038.60 | 0 | NaN | 4 | 511.00 | 0 | NaN |
| 2007 | ||||||||||||
| Firefox | 115 | 1550.83 | 51 | 1875.82 | 2 | 928.00 | 0 | NaN | 0 | NaN | 0 | NaN |
| 2008 | ||||||||||||
| Firefox | 107 | 811.78 | 36 | 890.36 | 19 | 789.63 | 0 | NaN | 0 | NaN | 0 | NaN |
| Safari | 225 | 1401.73 | 7 | 2566.00 | 1 | 356.00 | 4 | 1733.50 | 1 | 720.00 | 0 | NaN |
| 2009 | ||||||||||||
| Firefox | 138 | 561.04 | 40 | 1141.70 | 11 | 1138.55 | 3 | 22.00 | 10 | 148.00 | 0 | NaN |
| Safari | 24 | 1115.38 | 10 | 717.50 | 0 | NaN | 2 | 342.00 | 0 | NaN | 0 | NaN |
| 2010 | ||||||||||||
| Firefox | 117 | 744.87 | 45 | 891.56 | 35 | 1012.60 | 7 | 504.00 | 1 | 435.00 | 0 | NaN |
| Safari | 28 | 786.36 | 8 | 794.13 | 0 | NaN | 0 | NaN | 0 | NaN | 0 | NaN |
| 2011 | ||||||||||||
| Safari | 286 | 606.36 | 22 | 1614.45 | 26 | 537.27 | 46 | 263.33 | 1 | 945.00 | 0 | NaN |
| Firefox | 47 | 1326.04 | 27 | 909.52 | 2 | 520.50 | 37 | 1030.46 | 0 | NaN | 0 | NaN |
| 2012 | ||||||||||||
| Firefox | 218 | 687.89 | 31 | 971.55 | 23 | 1138.17 | 3 | 778.33 | 0 | NaN | 0 | NaN |
| Safari | 149 | 876.76 | 47 | 1020.36 | 3 | 106.00 | 24 | 985.46 | 6 | 188.67 | 0 | NaN |
| 2013 | ||||||||||||
| Safari | 216 | 1326.50 | 32 | 1174.41 | 10 | 904.30 | 59 | 750.31 | 13 | 212.54 | 0 | NaN |
| Firefox | 131 | 592.98 | 51 | 904.96 | 0 | NaN | 11 | 1010.64 | 4 | 1123.50 | 0 | NaN |
| 2014 | ||||||||||||
| Firefox | 36 | 430.67 | 8 | 933.38 | 1 | 208.00 | 3 | 184.33 | 0 | NaN | 0 | NaN |
| Safari | 259 | 1243.34 | 98 | 1283.10 | 3 | 2190.33 | 91 | 634.99 | 0 | NaN | 0 | NaN |
| 2015 | ||||||||||||
| Safari | 286 | 989.31 | 72 | 1381.69 | 8 | 639.00 | 71 | 380.28 | 6 | 1075.67 | 0 | NaN |
| Firefox | 11 | 587.00 | 33 | 888.42 | 0 | NaN | 8 | 273.00 | 0 | NaN | 0 | NaN |
| 2016 | ||||||||||||
| Safari | 307 | 930.10 | 28 | 1210.93 | 9 | 982.67 | 31 | 108.94 | 9 | 513.89 | 0 | NaN |
| Firefox | 65 | 668.06 | 23 | 1148.22 | 8 | 830.00 | 26 | 168.62 | 2 | 273.00 | 0 | NaN |
| 2017 | ||||||||||||
| Safari | 396 | 1353.16 | 92 | 633.55 | 7 | 417.14 | 31 | 364.77 | 4 | 759.00 | 28 | 196.00 |
| Firefox | 163 | 718.81 | 59 | 689.83 | 3 | 255.33 | 3 | 408.00 | 0 | NaN | 0 | NaN |
| 2018 | ||||||||||||
| Safari | 154 | 738.05 | 52 | 1160.81 | 1 | 1644.00 | 17 | 294.00 | 13 | 1206.00 | 9 | 835.00 |
| Firefox | 33 | 974.64 | 7 | 573.43 | 14 | 907.43 | 6 | 631.67 | 1 | 540.00 | 0 | NaN |
| 2019 | ||||||||||||
| Safari | 63 | 708.02 | 96 | 731.38 | 4 | 684.25 | 32 | 533.31 | 5 | 162.60 | 0 | NaN |
| Firefox | 66 | 1338.85 | 25 | 610.28 | 7 | 854.57 | 2 | 57.50 | 1 | 729.00 | 0 | NaN |
| 2020 | ||||||||||||
| Firefox | 66 | 585.64 | 11 | 720.82 | 3 | 1176.00 | 1 | 70.00 | 0 | NaN | 1 | 98.00 |
| Safari | 110 | 378.17 | 118 | 435.56 | 7 | 744.29 | 73 | 298.96 | 2 | 503.00 | 5 | 454.00 |
| 2021 | ||||||||||||
| Safari | 20 | 411.10 | 23 | 531.65 | 0 | NaN | 19 | 143.11 | 5 | 533.80 | 1 | 664.00 |
| Firefox | 121 | 518.02 | 13 | 492.08 | 3 | 353.33 | 14 | 736.00 | 0 | NaN | 8 | 141.00 |
| 2022 | ||||||||||||
| Safari | 129 | 201.12 | 30 | 366.10 | 4 | 55.00 | 2 | 289.50 | 1 | 76.00 | 0 | NaN |
| Firefox | 83 | 426.14 | 76 | 346.42 | 4 | 435.00 | 22 | 375.82 | 8 | 284.25 | 0 | NaN |
| 2023 | ||||||||||||
| Firefox | 161 | 321.38 | 19 | 253.21 | 16 | 234.44 | 20 | 330.00 | 5 | 208.20 | 0 | NaN |
| Safari | 22 | 115.18 | 20 | 93.30 | 1 | 76.00 | 6 | 109.17 | 0 | NaN | 4 | 343.25 |
| 2024 | ||||||||||||
| Firefox | 21 | 88.81 | 17 | 52.76 | 0 | NaN | 2 | 27.00 | 0 | NaN | 0 | NaN |
| Safari | 34 | 81.09 | 24 | 143.75 | 0 | NaN | 14 | 60.79 | 0 | NaN | 0 | NaN |
Below is a list of features that are in Firefox and Safari
| API | First Browser | Date | Last Browser | Date | Days | Notes |
|---|---|---|---|---|---|---|
| api.ANGLE_instanced_arrays π | Safari | 10/16/2014 | Firefox | 6/7/2016 | 600 | Chrome: Available only on macOS.Opera: Available only on macOS. |
| api.ANGLE_instanced_arrays.drawArraysInstancedANGLE π | Safari | 10/16/2014 | Firefox | 6/7/2016 | 600 | |
| api.ANGLE_instanced_arrays.drawElementsInstancedANGLE π | Safari | 10/16/2014 | Firefox | 6/7/2016 | 600 | |
| api.ANGLE_instanced_arrays.vertexAttribDivisorANGLE π | Safari | 10/16/2014 | Firefox | 6/7/2016 | 600 | |
| api.AbortController π | Firefox | 11/14/2017 | Safari | 3/25/2019 | 496 | Safari: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.Safari on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.WebView on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980. |
| api.AbortController.AbortController π | Firefox | 11/14/2017 | Safari | 3/25/2019 | 496 | Safari: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.Safari on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.WebView on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980. |
| api.AbortController.abort π | Firefox | 11/14/2017 | Safari | 3/25/2019 | 496 | Node.js: The optional reason argument is not supported.Node.js: The optional reason argument is not supported.Safari: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.Safari on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.WebView on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980. |
| api.AbortController.abort.reason_parameter π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| api.AbortController.signal π | Firefox | 11/14/2017 | Safari | 3/25/2019 | 496 | Safari: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.Safari on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.WebView on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980. |
| api.AbortSignal π | Firefox | 11/14/2017 | Safari | 4/12/2018 | 149 | |
| api.AbortSignal.abort_event π | Firefox | 11/14/2017 | Safari | 4/12/2018 | 149 | |
| api.AbortSignal.abort_static π | Firefox | 4/19/2021 | Safari | 9/20/2021 | 154 | |
| api.AbortSignal.abort_static.reason_parameter π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| api.AbortSignal.aborted π | Firefox | 11/14/2017 | Safari | 4/12/2018 | 149 | |
| api.AbortSignal.any_static π | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| api.AbortSignal.reason π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| api.AbortSignal.throwIfAborted π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| api.AbortSignal.timeout_static π | Firefox | 5/3/2022 | Safari | 9/12/2022 | 132 | Chrome: Always aborts with an AbortError on timeout, not a TimeoutError.Chrome Android: Always aborts with an AbortError on timeout, not a TimeoutError.Edge: Always aborts with an AbortError on timeout, not a TimeoutError.Quest Browser: Always aborts with an AbortError on timeout, not a TimeoutError.Opera: Always aborts with an AbortError on timeout, not a TimeoutError.Opera Android: Always aborts with an AbortError on timeout, not a TimeoutError.Samsung Internet: Always aborts with an AbortError on timeout, not a TimeoutError.WebView Android: Always aborts with an AbortError on timeout, not a TimeoutError. |
| api.AbstractRange π | Firefox | 9/3/2019 | Safari | 4/26/2021 | 601 | |
| api.AbstractRange.collapsed π | Firefox | 9/3/2019 | Safari | 4/26/2021 | 601 | |
| api.AbstractRange.endContainer π | Firefox | 9/3/2019 | Safari | 4/26/2021 | 601 | |
| api.AbstractRange.endOffset π | Firefox | 9/3/2019 | Safari | 4/26/2021 | 601 | |
| api.AbstractRange.startContainer π | Firefox | 9/3/2019 | Safari | 4/26/2021 | 601 | |
| api.AbstractRange.startOffset π | Firefox | 9/3/2019 | Safari | 4/26/2021 | 601 | |
| api.AnalyserNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AnalyserNode.AnalyserNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.AnalyserNode.fftSize π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AnalyserNode.frequencyBinCount π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AnalyserNode.getByteFrequencyData π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AnalyserNode.getByteTimeDomainData π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AnalyserNode.getFloatFrequencyData π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AnalyserNode.getFloatTimeDomainData π | Firefox | 6/10/2014 | Safari | 4/26/2021 | 2512 | |
| api.AnalyserNode.maxDecibels π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AnalyserNode.minDecibels π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AnalyserNode.smoothingTimeConstant π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.Animation π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.Animation π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.cancel π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.cancel_event π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.commitStyles π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.Animation.currentTime π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.effect π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.Animation.finish π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.finish_event π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.finished π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.Animation.id π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.pause π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.pending π | Firefox | 3/13/2018 | Safari | 3/24/2020 | 742 | Firefox: Before version 59, the pending status was reported by a "pending" value returned from Animation.playState.Firefox for Android: Before version 59, the pending status was reported by a "pending" value returned from Animation.playState. |
| api.Animation.persist π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.Animation.play π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.playState π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | Chrome: Before Chrome 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows paused.Chrome Android: Before Chrome Android 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with Chrome Android 50/Opera 37, it shows paused.Firefox: Before Firefox 59, this property returned pending for Animations with incomplete asynchronous operations but as of Firefox 59 this is indicated by the separate Animation.pending property. This reflects recent changes to the specification.Firefox for Android: Before Firefox for Android 59, this property returned pending for Animations with incomplete asynchronous operations but as of Firefox for Android 59 this is indicated by the separate Animation.pending property. This reflects recent changes to the specification.Quest Browser: Before Quest Browser 5.0/Opera 37, this property returned idle for an animation that had not yet started. Starting with Quest Browser 5.0/Opera 37, it shows paused.Opera: Before Chrome 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows paused.Opera Android: Before Chrome 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows paused.Samsung Internet: Before Samsung Internet 5.0/Opera 37, this property returned idle for an animation that had not yet started. Starting with Samsung Internet 5.0/Opera 37, it shows paused.WebView Android: Before WebView Android 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with WebView Android 50/Opera 37, it shows paused. |
| api.Animation.playbackRate π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.ready π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.Animation.remove_event π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.Animation.remove_filling_animation | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.Animation.replaceState π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.Animation.reverse π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.startTime π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Animation.timeline π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | Firefox: Currently only the getter is supportedFirefox for Android: Currently only the getter is supportedSafari: Currently only the getter is supportedSafari on iOS: Currently only the getter is supportedWebView on iOS: Currently only the getter is supported |
| api.Animation.updatePlaybackRate π | Firefox | 5/9/2018 | Safari | 3/24/2020 | 685 | |
| api.AnimationEffect π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.AnimationEffect.getComputedTiming π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.AnimationEffect.getTiming π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.AnimationEffect.updateTiming π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.AnimationEvent π | Firefox | 6/21/2011 | Safari | 9/30/2015 | 1562 | |
| api.AnimationEvent.AnimationEvent π | Firefox | 8/6/2013 | Safari | 9/30/2015 | 785 | |
| api.AnimationEvent.animationName π | Firefox | 6/21/2011 | Safari | 9/30/2015 | 1562 | |
| api.AnimationEvent.elapsedTime π | Firefox | 6/21/2011 | Safari | 9/30/2015 | 1562 | |
| api.AnimationEvent.pseudoElement π | Firefox | 8/6/2013 | Safari | 3/24/2020 | 2422 | |
| api.AnimationPlaybackEvent π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.AnimationPlaybackEvent.AnimationPlaybackEvent π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.AnimationPlaybackEvent.currentTime π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.AnimationPlaybackEvent.timelineTime π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.AnimationTimeline π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.AnimationTimeline.currentTime π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.Attr π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Attr.localName π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Attr.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Attr.namespaceURI π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Attr.ownerElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Attr.prefix π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Attr.specified π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Attr.value π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.AudioBuffer π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioBuffer.AudioBuffer π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | Chrome: The context parameter was supported up until version 57, but has now been removed.Chrome Android: The context parameter was supported up until version 57, but has now been removed.Quest Browser: The context parameter was supported up until version 5.0, but has now been removed.Opera: The context parameter was supported up until version 44, but has now been removed.Opera Android: The context parameter was supported up until version 44, but has now been removed.Samsung Internet: The context parameter was supported up until Samsung Internet 7.0, but has now been removed.WebView Android: The context parameter was supported up until version 57, but has now been removed. |
| api.AudioBuffer.copyFromChannel π | Firefox | 2/4/2014 | Safari | 4/26/2021 | 2638 | |
| api.AudioBuffer.copyToChannel π | Firefox | 2/4/2014 | Safari | 4/26/2021 | 2638 | |
| api.AudioBuffer.duration π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioBuffer.getChannelData π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioBuffer.length π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioBuffer.numberOfChannels π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioBuffer.sampleRate π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioBufferSourceNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioBufferSourceNode.AudioBufferSourceNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.AudioBufferSourceNode.buffer π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | Firefox: Firefox currently handles the value null incorrectly. Instead of producing a node that generates a single channel of silence, the node becomes unusable and will be ignored if you attempt to connect it to anything.Firefox for Android: Firefox for Android currently handles the value null incorrectly. Instead of producing a node that generates a single channel of silence, the node becomes unusable and will be ignored if you attempt to connect it to anything. |
| api.AudioBufferSourceNode.detune π | Firefox | 8/11/2015 | Safari | 4/26/2021 | 2085 | |
| api.AudioBufferSourceNode.loop π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioBufferSourceNode.loopEnd π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.AudioBufferSourceNode.loopStart π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.AudioBufferSourceNode.playbackRate π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioBufferSourceNode.start π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.AudioContext π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.AudioContext.AudioContext π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | Chrome: Before Chrome 66, each tab is limited to 6 audio contexts in Chrome; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome.Chrome: If latencyHint isn't valid, Chrome throws a TypeError exception. See Non-standard exceptions in Chrome for details.Chrome Android: Before Chrome Android 66, each tab is limited to 6 audio contexts in Chrome Android; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome Android.Chrome Android: If latencyHint isn't valid, Chrome Android throws a TypeError exception. See Non-standard exceptions in Chrome Android for details.Quest Browser: Before Quest Browser 5.0, each tab is limited to 6 audio contexts in Quest Browser; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Quest Browser.Quest Browser: If latencyHint isn't valid, Quest Browser throws a TypeError exception. See Non-standard exceptions in Quest Browser for details.Opera: Before Opera 53, each tab is limited to 6 audio contexts in Opera; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome.Opera: If latencyHint isn't valid, Opera throws a TypeError exception. See Non-standard exceptions in Chrome for details.Opera Android: Before Opera Android 47, each tab is limited to 6 audio contexts in Opera; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome.Opera Android: If latencyHint isn't valid, Opera throws a TypeError exception. See Non-standard exceptions in Chrome for details.Safari: New audio contexts are suspended until the resume() method is called via user action, such as the click event.Safari on iOS: New audio contexts are suspended until the resume() method is called via user action, such as the click event.Samsung Internet: Before Samsung Internet 9.0, each tab is limited to 6 audio contexts in Samsung Internet; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome.Samsung Internet: If latencyHint isn't valid, Samsung Internet throws a TypeError exception. See Non-standard exceptions in Chrome for details.WebView Android: Before WebView 66, each tab is limited to 6 audio contexts in WebView; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome.WebView Android: If latencyHint isn't valid, WebView throws a TypeError exception. See Non-standard exceptions in Chrome for details.WebView on iOS: New audio contexts are suspended until the resume() method is called via user action, such as the click event. |
| api.AudioContext.AudioContext.options_sampleRate_parameter π | Firefox | 6/26/2018 | Safari | 4/26/2021 | 1035 | |
| api.AudioContext.baseLatency π | Firefox | 10/22/2019 | Safari | 4/26/2021 | 552 | |
| api.AudioContext.close π | Firefox | 8/11/2015 | Safari | 9/30/2015 | 50 | |
| api.AudioContext.createMediaElementSource π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | Firefox: If a sample rate is specified for the audio context, it must match the sample rate of the stream, otherwise this method will fail.Firefox for Android: If a sample rate is specified for the audio context, it must match the sample rate of the stream, otherwise this method will fail. |
| api.AudioContext.createMediaStreamDestination π | Firefox | 10/29/2013 | Safari | 9/19/2017 | 1421 | |
| api.AudioContext.createMediaStreamSource π | Firefox | 10/29/2013 | Safari | 9/19/2017 | 1421 | |
| api.AudioContext.getOutputTimestamp π | Firefox | 10/22/2019 | Safari | 4/26/2021 | 552 | |
| api.AudioContext.resume π | Firefox | 8/11/2015 | Safari | 9/30/2015 | 50 | |
| api.AudioContext.suspend π | Firefox | 8/11/2015 | Safari | 9/30/2015 | 50 | |
| api.AudioDestinationNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioDestinationNode.maxChannelCount π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | Safari: This property always returns 0.Safari on iOS: This property always returns 0.WebView on iOS: This property always returns 0. |
| api.AudioListener π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioListener.setOrientation π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioListener.setPosition π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioNode.channelCount π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.AudioNode.channelCountMode π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.AudioNode.channelInterpretation π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.AudioNode.connect π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioNode.context π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioNode.disconnect π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioNode.numberOfInputs π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioNode.numberOfOutputs π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioParam π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioParam.cancelScheduledValues π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioParam.defaultValue π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioParam.exponentialRampToValueAtTime π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | Chrome Android: This sets the target volume at the specified time, but it doesnβt ramp to it, causing this function to behave like setValueAtTime().Firefox: Does not work (see bug 1171438 and bug 1567777).Firefox for Android: Does not work (see bug 1171438 and bug 1567777).Quest Browser: This sets the target volume at the specified time, but it doesnβt ramp to it, causing this function to behave like setValueAtTime(). |
| api.AudioParam.linearRampToValueAtTime π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | Chrome Android: This sets the target volume at the specified time, but it doesnβt ramp to it, causing this function to behave like setValueAtTime().Firefox: Does not work (see bug 1171438 and bug 1567777).Firefox for Android: Does not work (see bug 1171438 and bug 1567777).Quest Browser: This sets the target volume at the specified time, but it doesnβt ramp to it, causing this function to behave like setValueAtTime(). |
| api.AudioParam.maxValue π | Safari | 7/25/2012 | Firefox | 4/19/2017 | 1729 | |
| api.AudioParam.minValue π | Safari | 7/25/2012 | Firefox | 4/19/2017 | 1729 | |
| api.AudioParam.setTargetAtTime π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioParam.setValueAtTime π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioParam.setValueCurveAtTime π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioParam.value π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | Chrome: Before version 66, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Chrome Android: Before version 66, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Firefox: Before Firefox 134, setting value was ignored when done at the same time as scheduled automation events.Firefox: Before Firefox 69, value did not take into account scheduled or gradiated changes to the parameter's value; instead, only explicitly set values were returned.Firefox for Android: Firefox for Android does not currently take into account scheduled or gradiated changes to the parameter's value; only the initial value or the most recent explicitly set value is returned.Quest Browser: Before version 5.0, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Opera: Before version 53, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Opera Android: Before version 47, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Samsung Internet: Before version 9.0, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly). |
| api.AudioParamMap π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioParamMap.@@iterator | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioParamMap.entries | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioParamMap.forEach | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioParamMap.get | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioParamMap.has | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioParamMap.keys | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioParamMap.size | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioParamMap.values | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioProcessingEvent | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioProcessingEvent.inputBuffer π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioProcessingEvent.outputBuffer π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioProcessingEvent.playbackTime π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.AudioScheduledSourceNode π | Firefox | 4/19/2017 | Safari | 9/16/2020 | 1246 | Chrome: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Chrome Android: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Edge: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Firefox: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Firefox for Android: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Opera: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Opera Android: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Safari: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Safari on iOS: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Samsung Internet: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.WebView Android: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.WebView on iOS: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces. |
| api.AudioScheduledSourceNode.ended_event π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.AudioScheduledSourceNode.start π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.AudioScheduledSourceNode.stop π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.AudioTrack π | Firefox | 10/14/2014 | Safari | 10/16/2014 | 2 | |
| api.AudioTrack.enabled π | Firefox | 10/14/2014 | Safari | 10/16/2014 | 2 | |
| api.AudioTrack.id π | Firefox | 10/14/2014 | Safari | 10/16/2014 | 2 | |
| api.AudioTrack.kind π | Firefox | 10/14/2014 | Safari | 10/16/2014 | 2 | |
| api.AudioTrack.label π | Firefox | 10/14/2014 | Safari | 10/16/2014 | 2 | |
| api.AudioTrack.language π | Firefox | 10/14/2014 | Safari | 10/16/2014 | 2 | |
| api.AudioTrackList π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.AudioTrackList.addtrack_event π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.AudioTrackList.change_event π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.AudioTrackList.getTrackById π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.AudioTrackList.length π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.AudioTrackList.removetrack_event π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.AudioWorklet π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletGlobalScope π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletGlobalScope.currentFrame π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletGlobalScope.currentTime π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletGlobalScope.registerProcessor π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletGlobalScope.sampleRate π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletNode π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletNode.AudioWorkletNode π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletNode.parameters π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletNode.port π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletNode.processorerror_event π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletProcessor π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletProcessor.AudioWorkletProcessor π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AudioWorkletProcessor.port π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.AuthenticatorAssertionResponse π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.AuthenticatorAssertionResponse.authenticatorData π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.AuthenticatorAssertionResponse.signature π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.AuthenticatorAssertionResponse.userHandle π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.AuthenticatorAttestationResponse π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.AuthenticatorAttestationResponse.attestationObject π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.AuthenticatorAttestationResponse.getAuthenticatorData π | Safari | 9/12/2022 | Firefox | 10/24/2023 | 407 | |
| api.AuthenticatorAttestationResponse.getPublicKey π | Safari | 9/12/2022 | Firefox | 10/24/2023 | 407 | |
| api.AuthenticatorAttestationResponse.getPublicKeyAlgorithm π | Safari | 9/12/2022 | Firefox | 10/24/2023 | 407 | |
| api.AuthenticatorAttestationResponse.getTransports π | Safari | 9/12/2022 | Firefox | 10/24/2023 | 407 | |
| api.AuthenticatorResponse π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.AuthenticatorResponse.clientDataJSON π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.BarProp π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.BarProp.visible π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.BaseAudioContext π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | Chrome: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Chrome Android: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Edge: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Firefox: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Firefox for Android: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Opera: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Opera Android: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Safari: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Safari on iOS: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Samsung Internet: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.WebView Android: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.WebView on iOS: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces. |
| api.BaseAudioContext.audioWorklet π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.BaseAudioContext.createAnalyser π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createBiquadFilter π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createBuffer π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createBufferSource π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createChannelMerger π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createChannelSplitter π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createConstantSource π | Firefox | 3/7/2017 | Safari | 4/26/2021 | 1511 | |
| api.BaseAudioContext.createConvolver π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createDelay π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.BaseAudioContext.createDynamicsCompressor π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createGain π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.BaseAudioContext.createIIRFilter π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.BaseAudioContext.createOscillator π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createPanner π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.createPeriodicWave π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| api.BaseAudioContext.createPeriodicWave.constraints_disableNormalization_parameter | Firefox | 9/20/2016 | Safari | 4/26/2021 | 1679 | |
| api.BaseAudioContext.createScriptProcessor π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.BaseAudioContext.createStereoPanner π | Firefox | 3/31/2015 | Safari | 4/26/2021 | 2218 | |
| api.BaseAudioContext.createWaveShaper π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.currentTime π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.decodeAudioData π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.decodeAudioData.returns_promise | Firefox | 2/24/2015 | Safari | 4/26/2021 | 2253 | |
| api.BaseAudioContext.destination π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.listener π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.sampleRate π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BaseAudioContext.state π | Firefox | 8/11/2015 | Safari | 9/30/2015 | 50 | |
| api.BaseAudioContext.statechange_event π | Firefox | 8/11/2015 | Safari | 9/30/2015 | 50 | |
| api.BeforeUnloadEvent π | Firefox | 11/29/2005 | Safari | 10/22/2013 | 2884 | |
| api.BeforeUnloadEvent.returnValue π | Firefox | 11/29/2005 | Safari | 10/22/2013 | 2884 | Chrome: Before Chrome 119, an empty string incorrectly activated the confirmation dialog.Chrome Android: Before Chrome Android 119, an empty string incorrectly activated the confirmation dialog.Quest Browser: Before Quest Browser false, an empty string incorrectly activated the confirmation dialog.Opera: Before Opera 105, an empty string incorrectly activated the confirmation dialog.Opera Android: Before Opera Android 79, an empty string incorrectly activated the confirmation dialog. |
| api.BeforeUnloadEvent.user_interaction | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.BiquadFilterNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BiquadFilterNode.BiquadFilterNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.BiquadFilterNode.Q π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BiquadFilterNode.detune π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.BiquadFilterNode.frequency π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BiquadFilterNode.gain π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BiquadFilterNode.getFrequencyResponse π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.BiquadFilterNode.type π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.Blob π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | Node.js: Available as a part of the buffer module.Node.js: Available as a part of the buffer module. |
| api.Blob.Blob π | Firefox | 6/5/2012 | Safari | 7/25/2012 | 50 | Firefox: Before Firefox 16, the second parameter, when set to null or undefined, leads to an error instead of being handled as an empty dictionary.Firefox for Android: Before Firefox for Android 16, the second parameter, when set to null or undefined, leads to an error instead of being handled as an empty dictionary.Internet Explorer: IE10 throws InvalidStateError with a TypedArray argument. Consider using MSBuilder as an alternative.Node.js: Before v16.7.0, the endings option was not supported. |
| api.Blob.arrayBuffer π | Firefox | 9/3/2019 | Safari | 9/16/2020 | 379 | |
| api.Blob.bytes π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | |
| api.Blob.size π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.Blob.slice π | Firefox | 6/5/2012 | Safari | 10/22/2013 | 504 | Firefox: Before Firefox 12, there was a bug that affected the behavior of Blob.slice(); it did not work for start and end positions outside the range of signed 64-bit values; it has now been fixed to support unsigned 64-bit values.Firefox for Android: Before Firefox for Android 14, there was a bug that affected the behavior of Blob.slice(); it did not work for start and end positions outside the range of signed 64-bit values; it has now been fixed to support unsigned 64-bit values. |
| api.Blob.stream π | Firefox | 9/3/2019 | Safari | 4/26/2021 | 601 | |
| api.Blob.text π | Firefox | 9/3/2019 | Safari | 9/16/2020 | 379 | |
| api.Blob.type π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.BlobEvent π | Firefox | 5/14/2013 | Safari | 9/16/2020 | 2682 | |
| api.BlobEvent.BlobEvent π | Firefox | 5/14/2013 | Safari | 9/16/2020 | 2682 | |
| api.BlobEvent.data π | Firefox | 5/14/2013 | Safari | 9/16/2020 | 2682 | |
| api.BroadcastChannel π | Firefox | 5/12/2015 | Safari | 3/14/2022 | 2498 | Node.js: Available as a part of the worker_threads module. |
| api.BroadcastChannel.BroadcastChannel π | Firefox | 5/12/2015 | Safari | 3/14/2022 | 2498 | |
| api.BroadcastChannel.close π | Firefox | 5/12/2015 | Safari | 3/14/2022 | 2498 | |
| api.BroadcastChannel.message_event π | Firefox | 5/12/2015 | Safari | 3/14/2022 | 2498 | |
| api.BroadcastChannel.messageerror_event π | Firefox | 11/14/2017 | Safari | 3/14/2022 | 1581 | |
| api.BroadcastChannel.name π | Firefox | 5/12/2015 | Safari | 3/14/2022 | 2498 | |
| api.BroadcastChannel.postMessage π | Firefox | 5/12/2015 | Safari | 3/14/2022 | 2498 | |
| api.ByteLengthQueuingStrategy π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | Node.js: Available as a part of the stream/web module. |
| api.ByteLengthQueuingStrategy.ByteLengthQueuingStrategy π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.ByteLengthQueuingStrategy.highWaterMark π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.ByteLengthQueuingStrategy.size π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.CDATASection π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.CSS π | Firefox | 6/25/2013 | Safari | 9/30/2015 | 827 | |
| api.CSS.escape_static π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.CSS.registerProperty_static π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| api.CSS.supports_static π | Firefox | 6/25/2013 | Safari | 9/30/2015 | 827 | |
| api.CSS.supports_static.optional_parens | Firefox | 8/8/2017 | Safari | 9/19/2017 | 42 | |
| api.CSSAnimation π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.CSSAnimation.animationName π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.CSSConditionRule π | Firefox | 4/2/2013 | Safari | 4/26/2021 | 2946 | |
| api.CSSConditionRule.conditionText π | Firefox | 4/2/2013 | Safari | 4/26/2021 | 2946 | |
| api.CSSContainerRule π | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| api.CSSContainerRule.containerName π | Firefox | 2/14/2023 | Safari | 9/18/2023 | 216 | |
| api.CSSContainerRule.containerQuery π | Firefox | 2/14/2023 | Safari | 9/18/2023 | 216 | |
| api.CSSCounterStyleRule π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.additiveSymbols π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.fallback π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.name π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.negative π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.pad π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.prefix π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.range π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.speakAs π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.suffix π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.symbols π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSCounterStyleRule.system π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| api.CSSFontFaceRule π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.CSSFontFaceRule.style π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.CSSFontFeatureValuesRule π | Firefox | 12/1/2014 | Safari | 12/13/2022 | 2934 | |
| api.CSSFontFeatureValuesRule.fontFamily π | Firefox | 12/1/2014 | Safari | 12/13/2022 | 2934 | |
| api.CSSFontPaletteValuesRule π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| api.CSSFontPaletteValuesRule.basePalette π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| api.CSSFontPaletteValuesRule.fontFamily π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| api.CSSFontPaletteValuesRule.name π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| api.CSSFontPaletteValuesRule.overrideColors π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| api.CSSGroupingRule π | Firefox | 4/2/2013 | Safari | 4/26/2021 | 2946 | Safari: The CSSGroupingRule interface itself is not present, but many of the methods are available on various interfaces such as the CSSMediaRule and CSSPageRule interfaces.Safari on iOS: The CSSGroupingRule interface itself is not present, but many of the methods are available on various interfaces such as the CSSMediaRule and CSSPageRule interfaces.WebView on iOS: The CSSGroupingRule interface itself is not present, but many of the methods are available on various interfaces such as the CSSMediaRule and CSSPageRule interfaces. |
| api.CSSGroupingRule.cssRules π | Safari | 10/26/2007 | Firefox | 4/2/2013 | 1985 | |
| api.CSSGroupingRule.deleteRule π | Safari | 10/26/2007 | Firefox | 4/2/2013 | 1985 | |
| api.CSSGroupingRule.insertRule π | Safari | 10/26/2007 | Firefox | 4/2/2013 | 1985 | |
| api.CSSImportRule π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSImportRule.href π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSImportRule.layerName π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| api.CSSImportRule.media π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSImportRule.styleSheet π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSImportRule.supportsText π | Firefox | 6/6/2023 | Safari | 5/13/2024 | 342 | |
| api.CSSKeyframeRule π | Safari | 9/30/2015 | Firefox | 8/2/2016 | 307 | |
| api.CSSKeyframeRule.keyText π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| api.CSSKeyframeRule.style π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| api.CSSKeyframesRule π | Safari | 3/21/2016 | Firefox | 8/2/2016 | 134 | |
| api.CSSKeyframesRule.appendRule π | Firefox | 5/14/2013 | Safari | 3/21/2016 | 1042 | |
| api.CSSKeyframesRule.cssRules π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| api.CSSKeyframesRule.deleteRule π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| api.CSSKeyframesRule.findRule π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| api.CSSKeyframesRule.length π | Firefox | 1/17/2023 | Safari | 9/18/2023 | 244 | |
| api.CSSKeyframesRule.name π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| api.CSSLayerBlockRule π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| api.CSSLayerBlockRule.name π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| api.CSSLayerStatementRule π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| api.CSSLayerStatementRule.nameList π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| api.CSSMediaRule π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Firefox: Before Firefox 20, conditionText could not be set.Firefox for Android: Before Firefox for Android 20, conditionText could not be set. |
| api.CSSMediaRule.media π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.CSSNamespaceRule π | Safari | 3/27/2017 | Firefox | 4/19/2017 | 23 | |
| api.CSSNamespaceRule.namespaceURI π | Safari | 3/27/2017 | Firefox | 3/13/2018 | 351 | |
| api.CSSNamespaceRule.prefix π | Safari | 3/27/2017 | Firefox | 3/13/2018 | 351 | |
| api.CSSNestedDeclarations π | Firefox | 10/29/2024 | Safari | 12/11/2024 | 43 | |
| api.CSSNestedDeclarations.style π | Firefox | 10/29/2024 | Safari | 12/11/2024 | 43 | |
| api.CSSPageRule π | Safari | 10/26/2007 | Firefox | 2/19/2013 | 1943 | |
| api.CSSPageRule.selectorText π | Safari | 10/26/2007 | Firefox | 2/14/2023 | 5590 | |
| api.CSSPageRule.style π | Safari | 10/26/2007 | Firefox | 2/19/2013 | 1943 | |
| api.CSSPropertyRule π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| api.CSSPropertyRule.inherits π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| api.CSSPropertyRule.initialValue π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| api.CSSPropertyRule.name π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| api.CSSPropertyRule.syntax π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| api.CSSRule π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSRule.cssText π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: The property normalizes rules and does not return the original verbatim rule text. For example, border-width: 1px; border-style:solid; border-color:white; returns border: 1px solid white;. |
| api.CSSRule.parentRule π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSRule.parentStyleSheet π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSRule.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSRuleList π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSRuleList.item π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSRuleList.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSScopeRule π | Safari | 3/5/2024 | Firefox | 7/9/2024 | 126 | |
| api.CSSScopeRule.end π | Safari | 3/5/2024 | Firefox | 7/9/2024 | 126 | |
| api.CSSScopeRule.start π | Safari | 3/5/2024 | Firefox | 7/9/2024 | 126 | |
| api.CSSStartingStyleRule π | Safari | 5/13/2024 | Firefox | 8/6/2024 | 85 | |
| api.CSSStyleDeclaration π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleDeclaration.@@iterator | Firefox | 2/24/2015 | Safari | 9/19/2017 | 938 | |
| api.CSSStyleDeclaration.cssText π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleDeclaration.getPropertyPriority π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleDeclaration.getPropertyValue π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleDeclaration.item π | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | |
| api.CSSStyleDeclaration.length π | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | |
| api.CSSStyleDeclaration.parentRule π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleDeclaration.removeProperty π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleDeclaration.setProperty π | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | |
| api.CSSStyleRule π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleRule.cssRules π | Safari | 5/18/2023 | Firefox | 8/29/2023 | 103 | |
| api.CSSStyleRule.deleteRule π | Safari | 5/18/2023 | Firefox | 8/29/2023 | 103 | |
| api.CSSStyleRule.insertRule π | Safari | 5/18/2023 | Firefox | 8/29/2023 | 103 | |
| api.CSSStyleRule.selectorText π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleRule.style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleSheet π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleSheet.CSSStyleSheet π | Firefox | 5/31/2022 | Safari | 3/27/2023 | 300 | |
| api.CSSStyleSheet.CSSStyleSheet.options_baseURL_parameter π | Firefox | 5/31/2022 | Safari | 3/27/2023 | 300 | |
| api.CSSStyleSheet.addRule π | Safari | 6/23/2003 | Firefox | 7/9/2019 | 5860 | |
| api.CSSStyleSheet.cssRules π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleSheet.deleteRule π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleSheet.insertRule π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleSheet.insertRule.index_parameter_optional | Safari | 6/23/2003 | Firefox | 8/8/2017 | 5160 | |
| api.CSSStyleSheet.ownerRule π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CSSStyleSheet.removeRule π | Safari | 10/26/2007 | Firefox | 7/9/2019 | 4274 | |
| api.CSSStyleSheet.replace π | Firefox | 5/31/2022 | Safari | 3/27/2023 | 300 | |
| api.CSSStyleSheet.replaceSync π | Firefox | 5/31/2022 | Safari | 3/27/2023 | 300 | |
| api.CSSStyleSheet.rules π | Safari | 6/23/2003 | Firefox | 7/9/2019 | 5860 | |
| api.CSSSupportsRule π | Firefox | 6/25/2013 | Safari | 9/30/2015 | 827 | |
| api.CSSTransition π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.CSSTransition.transitionProperty π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.Cache π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | Chrome: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.Chrome Android: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.Quest Browser: Before version 5.0, only service workers are supported. From version 5.0, all worker types and the main thread are supported.Opera: Before version 30, only service workers are supported. From version 30, all worker types and the main thread are supported.Opera Android: Before version 30, only service workers are supported. From version 30, all worker types and the main thread are supported.WebView Android: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported. |
| api.Cache.add π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | Chrome: Requires HTTPS from version 46.Chrome Android: Requires HTTPS from version 46.Quest Browser: Requires HTTPS from version 5.0.Opera: Requires HTTPS from version 33.Opera Android: Requires HTTPS from version 33.Samsung Internet: Requires HTTPS from Samsung Internet 5.0.WebView Android: Requires HTTPS from version 46. |
| api.Cache.addAll π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | Chrome: Requires HTTPS.Chrome Android: Requires HTTPS.Quest Browser: Requires HTTPS.Opera: Requires HTTPS.Opera Android: Requires HTTPS.Samsung Internet: Requires HTTPS.WebView Android: Requires HTTPS. |
| api.Cache.delete π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | Deno: Currently doesn't support query options |
| api.Cache.keys π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | |
| api.Cache.match π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | Deno: Currently doesn't support query options |
| api.Cache.matchAll π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | Opera: Requires HTTPS. |
| api.Cache.put π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | Chrome: Requires HTTPS from version 46.Chrome Android: Requires HTTPS from version 46.Quest Browser: Requires HTTPS from version 5.0.Opera: Requires HTTPS from version 33.Opera Android: Requires HTTPS from version 33.Samsung Internet: Requires HTTPS from Samsung Internet 5.0.WebView Android: Requires HTTPS from version 46. |
| api.Cache.worker_support | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | Chrome: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.Chrome Android: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.Quest Browser: Before version 5.0, only service workers are supported. From version 5.0, all worker types and the main thread are supported.Opera: Before version 30, only service workers are supported. From version 30, all worker types and the main thread are supported.Opera Android: Before version 30, only service workers are supported. From version 30, all worker types and the main thread are supported.WebView Android: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported. |
| api.CacheStorage π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | Chrome: Only available in service workers.Chrome Android: Only available in service workers.Opera: Only available in service workers.Opera Android: Only available in service workers.WebView Android: Only available in service workers. |
| api.CacheStorage.delete π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | |
| api.CacheStorage.has π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | |
| api.CacheStorage.keys π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | |
| api.CacheStorage.match π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | Chrome: The options parameter only supports ignoreSearch, and cacheName.Chrome Android: The options parameter only supports ignoreSearch, and cacheName.Quest Browser: The options parameter only supports ignoreSearch, and cacheName.Opera: The options parameter only supports ignoreSearch, and cacheName.Opera Android: The options parameter only supports ignoreSearch, and cacheName.Samsung Internet: The options parameter only supports ignoreSearch, and cacheName.WebView Android: The options parameter only supports ignoreSearch, and cacheName. |
| api.CacheStorage.open π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | |
| api.CacheStorage.secure_context_required | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.CacheStorage.worker_support | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | Chrome: Only available in service workers.Chrome Android: Only available in service workers.Opera: Only available in service workers.Opera Android: Only available in service workers.WebView Android: Only available in service workers. |
| api.CanvasGradient π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | Firefox: Before Firefox 5.0, specifying non-finite values when adding color stops through a call to addColorStop() incorrectly throws SYNTAX_ERR instead of INDEX_SIZE_ERR. |
| api.CanvasGradient.addColorStop π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasPattern π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasPattern.setTransform π | Firefox | 10/14/2014 | Safari | 4/12/2018 | 1276 | |
| api.CanvasPattern.setTransform.dommatrix | Safari | 4/12/2018 | Firefox | 7/28/2020 | 838 | |
| api.CanvasRenderingContext2D π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.arc π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.CanvasRenderingContext2D.arcTo π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.beginPath π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.bezierCurveTo π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.canvas π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.CanvasRenderingContext2D.clearRect π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.clip π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.clip.path_parameter | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | |
| api.CanvasRenderingContext2D.closePath π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.createConicGradient π | Safari | 10/24/2022 | Firefox | 4/11/2023 | 169 | Firefox: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function.Firefox for Android: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function.Safari: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function.Safari on iOS: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function.WebView on iOS: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function. |
| api.CanvasRenderingContext2D.createImageData π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.CanvasRenderingContext2D.createLinearGradient π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.createPattern π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | Firefox: The repetition values repeat-x and repeat-y are not supported with fill(), only with fillRect(), see bug 468358.Firefox for Android: The repetition values repeat-x and repeat-y are not supported with fill(), only with fillRect(), see bug 468358. |
| api.CanvasRenderingContext2D.createRadialGradient π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.direction π | Safari | 9/30/2015 | Firefox | 5/31/2022 | 2435 | |
| api.CanvasRenderingContext2D.drawFocusIfNeeded π | Firefox | 9/2/2014 | Safari | 10/16/2014 | 44 | |
| api.CanvasRenderingContext2D.drawImage π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.drawImage.ImageBitmap_source_image | Firefox | 11/3/2015 | Safari | 9/20/2021 | 2148 | |
| api.CanvasRenderingContext2D.drawImage.SVGImageElement_source_image | Firefox | 9/28/2017 | Safari | 9/18/2023 | 2181 | |
| api.CanvasRenderingContext2D.ellipse π | Safari | 9/30/2015 | Firefox | 8/2/2016 | 307 | |
| api.CanvasRenderingContext2D.fill π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.fill.path_parameter | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | |
| api.CanvasRenderingContext2D.fillRect π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.fillStyle π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.fillText π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.CanvasRenderingContext2D.font π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.CanvasRenderingContext2D.getContextAttributes π | Safari | 9/20/2021 | Firefox | 8/29/2023 | 708 | |
| api.CanvasRenderingContext2D.getImageData π | Firefox | 10/24/2006 | Safari | 6/8/2009 | 958 | Firefox: Since Firefox 5, getImageData now correctly accepts rectangles that extend beyond the bounds of the canvas; pixels outside the canvas are returned as transparent black and now also returns at least one pixel's worth of image data if a rectangle smaller than one pixel is specified.Firefox for Android: Since Firefox for Android 5, getImageData now correctly accepts rectangles that extend beyond the bounds of the canvas; pixels outside the canvas are returned as transparent black and now also returns at least one pixel's worth of image data if a rectangle smaller than one pixel is specified. |
| api.CanvasRenderingContext2D.getLineDash π | Safari | 10/22/2013 | Firefox | 2/4/2014 | 105 | |
| api.CanvasRenderingContext2D.getTransform π | Safari | 4/12/2018 | Firefox | 10/22/2019 | 558 | |
| api.CanvasRenderingContext2D.globalAlpha π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.globalCompositeOperation π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.imageSmoothingEnabled π | Safari | 3/21/2016 | Firefox | 1/24/2017 | 309 | |
| api.CanvasRenderingContext2D.isPointInPath π | Firefox | 10/24/2006 | Safari | 3/18/2008 | 511 | |
| api.CanvasRenderingContext2D.isPointInPath.path_parameter | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | |
| api.CanvasRenderingContext2D.isPointInStroke π | Firefox | 2/19/2013 | Safari | 10/22/2013 | 245 | |
| api.CanvasRenderingContext2D.isPointInStroke.path_parameter | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | |
| api.CanvasRenderingContext2D.lineCap π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.lineDashOffset π | Safari | 10/22/2013 | Firefox | 2/4/2014 | 105 | |
| api.CanvasRenderingContext2D.lineJoin π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.lineTo π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.lineWidth π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.measureText π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.CanvasRenderingContext2D.miterLimit π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.moveTo π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.putImageData π | Firefox | 10/24/2006 | Safari | 6/8/2009 | 958 | |
| api.CanvasRenderingContext2D.quadraticCurveTo π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.CanvasRenderingContext2D.rect π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.reset π | Firefox | 5/9/2023 | Safari | 12/11/2023 | 216 | |
| api.CanvasRenderingContext2D.resetTransform π | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.CanvasRenderingContext2D.restore π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.rotate π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.roundRect π | Safari | 9/12/2022 | Firefox | 4/11/2023 | 211 | |
| api.CanvasRenderingContext2D.save π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.scale π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.setLineDash π | Safari | 10/22/2013 | Firefox | 2/4/2014 | 105 | |
| api.CanvasRenderingContext2D.setTransform π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.CanvasRenderingContext2D.setTransform.matrix_parameter | Safari | 4/12/2018 | Firefox | 10/22/2019 | 558 | |
| api.CanvasRenderingContext2D.shadowBlur π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.shadowColor π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.shadowOffsetX π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.shadowOffsetY π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.stroke π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.stroke.path_parameter | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | |
| api.CanvasRenderingContext2D.strokeRect π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.strokeStyle π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.CanvasRenderingContext2D.strokeText π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.CanvasRenderingContext2D.textAlign π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.CanvasRenderingContext2D.textBaseline π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.CanvasRenderingContext2D.transform π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| api.CanvasRenderingContext2D.translate π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.ChannelMergerNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.ChannelMergerNode.ChannelMergerNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.ChannelSplitterNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | Chrome: Starting in Chrome 56, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Chrome Android: Starting in Chrome Android 56, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Quest Browser: Starting in Quest Browser 5.0, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Opera: Starting in Opera 43, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Opera Android: Starting in Opera Android 43, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Samsung Internet: Starting in Samsung Internet 6.0, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.WebView Android: Starting in version 56, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec. |
| api.ChannelSplitterNode.ChannelSplitterNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.CharacterData π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CharacterData.after π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.CharacterData.appendData π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CharacterData.before π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.CharacterData.data π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CharacterData.deleteData π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CharacterData.insertData π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CharacterData.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CharacterData.nextElementSibling π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.CharacterData.previousElementSibling π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.CharacterData.remove π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| api.CharacterData.replaceData π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.CharacterData.replaceWith π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.CharacterData.substringData π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Client π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.Client.frameType π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.Client.id π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.Client.postMessage π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.Client.type π | Firefox | 6/13/2017 | Safari | 4/12/2018 | 303 | |
| api.Client.url π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.Clients π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.Clients.claim π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.Clients.get π | Firefox | 3/8/2016 | Safari | 4/12/2018 | 765 | |
| api.Clients.matchAll π | Firefox | 6/13/2017 | Safari | 4/12/2018 | 303 | Chrome: Client objects returned in most recent focus order.Chrome Android: Client objects returned in most recent focus order.Edge: Client objects returned in most recent focus order.Firefox: Before Firefox 54, Client objects were not returned in the most recent focus order as required by the specification.Firefox for Android: Before Firefox for Android 54, Client objects were not returned in the most recent focus order as required by the specification.Quest Browser: Client objects returned in most recent focus order.Samsung Internet: Client objects returned in most recent focus order.WebView Android: Client objects returned in most recent focus order. |
| api.Clients.matchAll.options_includeUncontrolled_parameter π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | Chrome: Client objects returned in most recent focus order.Chrome Android: Client objects returned in most recent focus order.Edge: Client objects returned in most recent focus order.Quest Browser: Client objects returned in most recent focus order.Samsung Internet: Client objects returned in most recent focus order.WebView Android: Client objects returned in most recent focus order. |
| api.Clients.openWindow π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | Chrome: Before Chrome 43, this method could only open URLs on the same origin.Chrome: Since Chrome 51, URLs may open inside an existing browsing context provided by a standalone web app.Chrome Android: Before Chrome Android 43, this method could only open URLs on the same origin.Chrome Android: Since Chrome Android 51, URLs may open inside an existing browsing context provided by a standalone web app.Quest Browser: Before Quest Browser 5.0, this method could only open URLs on the same origin.Quest Browser: Since Quest Browser 5.0, URLs may open inside an existing browsing context provided by a standalone web app.Samsung Internet: Before Samsung Internet 4.0, this method could only open URLs on the same origin.Samsung Internet: Since Samsung Internet 5.0, URLs may open inside an existing browsing context provided by a standalone web app.WebView Android: Before WebView Android 43, this method could only open URLs on the same origin.WebView Android: Since WebView Android 51, URLs may open inside an existing browsing context provided by a standalone web app. |
| api.Clipboard π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.Clipboard.read π | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | Chrome: The user must grant the clipboard-read permission.Chrome Android: The user must grant the clipboard-read permission.Edge: The user must grant the clipboard-read permission.Firefox: This method must be called within user gesture event handlers.Firefox: Web extensions require the clipboardRead permission in manifest to read data. With this permission, the extension does not require a user interaction and does not display a paste prompt.Firefox: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Firefox for Android: This method must be called within user gesture event handlers.Firefox for Android: Web extensions require the clipboardRead permission in manifest to read data. With this permission, the extension does not require a user interaction and does not display a paste prompt.Firefox for Android: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Quest Browser: The user must grant the clipboard-read permission.Opera: The user must grant the clipboard-read permission.Opera Android: The user must grant the clipboard-read permission.Samsung Internet: The user must grant the clipboard-read permission.WebView Android: The user must grant the clipboard-read permission. |
| api.Clipboard.readText π | Safari | 3/24/2020 | Firefox | 4/16/2024 | 1484 | Chrome: The user must grant the clipboard-read permission.Chrome Android: The user must grant the clipboard-read permission.Edge: The user must grant the clipboard-read permission.Firefox: This method must be called within user gesture event handlers.Firefox: Web extensions require the clipboardRead permission in manifest to read data. With this permission, the extension does not require a user interaction and does not display a paste prompt.Firefox: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Firefox for Android: This method must be called within user gesture event handlers.Firefox for Android: Web extensions require the clipboardRead permission in manifest to read data. With this permission, the extension does not require a user interaction and does not display a paste prompt.Firefox for Android: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Quest Browser: The user must grant the clipboard-read permission.Opera: The user must grant the clipboard-read permission.Opera Android: The user must grant the clipboard-read permission.Samsung Internet: The user must grant the clipboard-read permission.WebView Android: The user must grant the clipboard-read permission. |
| api.Clipboard.type_image-png | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | |
| api.Clipboard.type_text-html | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | |
| api.Clipboard.type_text-plain | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | |
| api.Clipboard.write π | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | Chrome: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Chrome: Before version 107, the user must grant the clipboard-write permission.Chrome Android: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Chrome Android: Before version 107, the user must grant the clipboard-write permission.Firefox: This method must be called within user gesture event handlers.Firefox: Web extensions require the clipboardWrite permission in manifest to read data. With this permission, the extension does not require a user interaction and does not display a paste prompt.Firefox: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Firefox for Android: This method must be called within user gesture event handlers.Firefox for Android: Web extensions require the clipboardWrite permission in manifest to read data. With this permission, the extension does not require a user interaction and does not display a paste prompt.Firefox for Android: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Quest Browser: From version false, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Quest Browser: Before version false, the user must grant the clipboard-write permission.Opera: From version 93, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Opera: Before version 93, the user must grant the clipboard-write permission.Opera Android: From version 73, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Opera Android: Before version 73, the user must grant the clipboard-write permission.Samsung Internet: From version 21.0, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Samsung Internet: Before version 21.0, the user must grant the clipboard-write permission.WebView Android: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.WebView Android: Before version 107, the user must grant the clipboard-write permission. |
| api.Clipboard.writeText π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | Chrome: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Chrome: Before version 107, the user must grant the clipboard-write permission.Chrome Android: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Chrome Android: Before version 107, the user must grant the clipboard-write permission.Edge: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Edge: Before version 107, the user must grant the clipboard-write permission.Firefox: This method must be called within user gesture event handlers.Firefox: Web extensions require the clipboardRead permission in manifest to read data. With this permission, the extension does not require a user interaction and does not display a paste prompt.Firefox: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Firefox for Android: This method must be called within user gesture event handlers.Firefox for Android: Web extensions require the clipboardRead permission in manifest to read data. With this permission, the extension does not require a user interaction and does not display a paste prompt.Firefox for Android: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Quest Browser: From version false, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Quest Browser: Before version false, the user must grant the clipboard-write permission.Opera: From version 93, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Opera: Before version 93, the user must grant the clipboard-write permission.Opera Android: From version 73, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Opera Android: Before version 73, the user must grant the clipboard-write permission.Safari: This method must be called within user gesture event handlers.Safari on iOS: This method must be called within user gesture event handlers.Samsung Internet: From version 21.0, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Samsung Internet: Before version 21.0, the user must grant the clipboard-write permission.WebView Android: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.WebView Android: Before version 107, the user must grant the clipboard-write permission.WebView on iOS: This method must be called within user gesture event handlers. |
| api.ClipboardEvent π | Firefox | 6/25/2013 | Safari | 3/27/2017 | 1371 | |
| api.ClipboardEvent.ClipboardEvent π | Firefox | 6/25/2013 | Safari | 3/27/2017 | 1371 | |
| api.ClipboardEvent.clipboardData π | Firefox | 6/25/2013 | Safari | 3/27/2017 | 1371 | |
| api.ClipboardItem π | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | |
| api.ClipboardItem.ClipboardItem π | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | Chrome: Only accepts a Blob or a Promise resolving to a Blob as the item data.Chrome: Only accepts a Blob as the item data. See bug 40103226.Chrome Android: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226.Edge: Only accepts a Blob or a Promise resolving to a Blob as the item data.Edge: Only accepts a Blob as the item data. See bug 40103226.Quest Browser: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226.Opera: Only accepts a Blob or a Promise resolving to a Blob as the item data.Opera: Only accepts a Blob as the item data. See bug 40103226.Opera Android: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226.Samsung Internet: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226.WebView Android: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226. |
| api.ClipboardItem.getType π | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | |
| api.ClipboardItem.presentationStyle π | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | |
| api.ClipboardItem.types π | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | |
| api.CloseEvent π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | Firefox: Before Firefox 12, the close code CLOSE_NORMAL was used when the channel was closed due to an unexpected error or unspecified error condition.Firefox: Before Firefox 8, the WebSocket close event was sent to the listener as a simple event. |
| api.CloseEvent.CloseEvent π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| api.CloseEvent.code π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.CloseEvent.reason π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.CloseEvent.wasClean π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.Comment π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Comment.Comment π | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | |
| api.CompositionEvent π | Safari | 6/7/2010 | Firefox | 12/20/2011 | 561 | |
| api.CompositionEvent.CompositionEvent π | Safari | 10/22/2013 | Firefox | 4/19/2017 | 1275 | |
| api.CompositionEvent.data π | Safari | 6/7/2010 | Firefox | 12/20/2011 | 561 | |
| api.CompositionEvent.initCompositionEvent π | Safari | 6/7/2010 | Firefox | 12/20/2011 | 561 | |
| api.CompressionStream π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | Node.js: Available as a part of the stream/web module. |
| api.CompressionStream.CompressionStream π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.CompressionStream.CompressionStream.deflate π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.CompressionStream.CompressionStream.deflate-raw π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.CompressionStream.CompressionStream.gzip π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.CompressionStream.readable π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.CompressionStream.writable π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.ConstantSourceNode π | Firefox | 3/7/2017 | Safari | 4/26/2021 | 1511 | |
| api.ConstantSourceNode.ConstantSourceNode π | Firefox | 3/7/2017 | Safari | 4/26/2021 | 1511 | |
| api.ConstantSourceNode.offset π | Firefox | 3/7/2017 | Safari | 4/26/2021 | 1511 | |
| api.ContentVisibilityAutoStateChangeEvent π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| api.ContentVisibilityAutoStateChangeEvent.ContentVisibilityAutoStateChangeEvent π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| api.ContentVisibilityAutoStateChangeEvent.skipped π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| api.ConvolverNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.ConvolverNode.ConvolverNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.ConvolverNode.buffer π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.ConvolverNode.normalize π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.CountQueuingStrategy π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | Node.js: Available as a part of the stream/web module. |
| api.CountQueuingStrategy.CountQueuingStrategy π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.CountQueuingStrategy.highWaterMark π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.CountQueuingStrategy.size π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.Credential π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.Credential.id π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.Credential.type π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.create π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.create.publicKey_option π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.create.publicKey_option.attestation π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.create.publicKey_option.attestation.direct π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox for Android: credentialCreationData.attestationConveyancePreferenceOption value "direct" is not supported. See https://bugzil.la/1550164 |
| api.CredentialsContainer.create.publicKey_option.attestation.enterprise π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox for Android: credentialCreationData.attestationConveyancePreferenceOption value "enterprise" is not supported. See https://bugzil.la/1550164 |
| api.CredentialsContainer.create.publicKey_option.attestation.indirect π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.create.publicKey_option.attestation.none π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.create.publicKey_option.extensions π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.create.publicKey_option.extensions.appidExclude π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.get π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.get.publicKey_option π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.get.publicKey_option.extensions π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.get.publicKey_option.extensions.appid π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.CredentialsContainer.preventSilentAccess π | Firefox | 5/9/2018 | Safari | 9/18/2023 | 1958 | Safari: This method exists, but always rejected with a NotSupportedError exception.Safari on iOS: This method exists, but always rejected with a NotSupportedError exception.WebView on iOS: This method exists, but always rejected with a NotSupportedError exception. |
| api.CredentialsContainer.store π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.Crypto π | Safari | 6/7/2010 | Firefox | 5/14/2013 | 1072 | Deno: Crypto is not a concrete interface, but its methods are available on Window.crypto.Node.js: Available as a part of the crypto module. |
| api.Crypto.getRandomValues π | Safari | 6/7/2010 | Firefox | 5/14/2013 | 1072 | Node.js: Since v17.4.0, a similar method is available via the crypto module. |
| api.Crypto.randomUUID π | Firefox | 12/7/2021 | Safari | 3/14/2022 | 97 | Node.js: Since 14.17.0 and 15.6.0, a similar method is available via the crypto module. |
| api.Crypto.subtle π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.Crypto.subtle.secure_context_required | Firefox | 4/7/2020 | Safari | 9/20/2021 | 531 | |
| api.CryptoKey π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Node.js: Available as a part of the crypto module. |
| api.CryptoKey.algorithm π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| api.CryptoKey.extractable π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Deno: The only supported value for this property is true. |
| api.CryptoKey.type π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| api.CryptoKey.usages π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| api.CustomElementRegistry π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | |
| api.CustomElementRegistry.define π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | |
| api.CustomElementRegistry.get π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | Safari: Supports 'Autonomous custom elements' but not 'Customized built-in elements'. See bug 182671.Safari on iOS: Supports 'Autonomous custom elements' but not 'Customized built-in elements'. See bug 182671.WebView on iOS: Supports 'Autonomous custom elements' but not 'Customized built-in elements'. See bug 182671. |
| api.CustomElementRegistry.getName π | Firefox | 8/1/2023 | Safari | 9/18/2023 | 48 | Safari: Supports 'Autonomous custom elements' but not 'Customized built-in elements'.Safari on iOS: Supports 'Autonomous custom elements' but not 'Customized built-in elements'.WebView on iOS: Supports 'Autonomous custom elements' but not 'Customized built-in elements'. |
| api.CustomElementRegistry.upgrade π | Firefox | 10/23/2018 | Safari | 3/25/2019 | 153 | |
| api.CustomElementRegistry.whenDefined π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | |
| api.CustomEvent π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.CustomEvent.CustomEvent π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| api.CustomEvent.detail π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.CustomEvent.initCustomEvent π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.CustomEvent.worker_support | Firefox | 8/2/2016 | Safari | 9/17/2018 | 776 | |
| api.CustomStateSet π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.@@iterator π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.add π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.clear π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.delete π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.entries π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.forEach π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.has π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.keys π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.size π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.CustomStateSet.values π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.DOMException π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.DOMException.DOMException π | Firefox | 3/31/2015 | Safari | 3/27/2017 | 727 | |
| api.DOMException.code π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.DOMException.message π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.DOMException.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.DOMImplementation π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.DOMImplementation.createDocument π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.DOMImplementation.createDocumentType π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.DOMImplementation.createHTMLDocument π | Safari | 6/23/2003 | Firefox | 3/22/2011 | 2829 | Internet Explorer: The title parameter is required, but can be empty string. |
| api.DOMImplementation.hasFeature π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Since Firefox 19, hasFeature() mostly returns true. |
| api.DOMMatrix π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.DOMMatrix π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.a π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.b π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.c π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.d π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.e π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.f π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.fromFloat32Array_static π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMMatrix.fromFloat64Array_static π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMMatrix.fromMatrix_static π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMMatrix.invertSelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m11 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m12 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m13 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m14 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m21 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m22 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m23 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m24 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m31 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m32 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m33 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m34 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m41 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m42 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m43 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.m44 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.multiplySelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.preMultiplySelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.rotateAxisAngleSelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.rotateFromVectorSelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.rotateSelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.scale3dSelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | Firefox: Starting in Firefox 69, the first parameter ( scale) is now optional with a default value of 1, per the specification. Previously it was required.Firefox for Android: Starting in Firefox for Android 79, the first parameter (scale) is now optional with a default value of 1, per the specification. Previously it was required. |
| api.DOMMatrix.scaleSelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | Firefox: Firefox 69 introduced support for the modern six-parameter syntax for scaleSelf(). Previously, it only supported the older three-parameter syntax: scale(scaleX[, originX][, originY]]]).Firefox for Android: Firefox for Android 79 introduced support for the modern six-parameter syntax for scaleSelf(). Previously, it only supported the older three-parameter syntax: scale(scaleX[, originX][, originY]]]). |
| api.DOMMatrix.setMatrixValue π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.skewXSelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.skewYSelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.translateSelf π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrix.worker_support | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMMatrixReadOnly π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.DOMMatrixReadOnly π | Safari | 9/19/2017 | Firefox | 9/5/2018 | 351 | |
| api.DOMMatrixReadOnly.a π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.b π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.c π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.d π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.e π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.f π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.flipX π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.flipY π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.fromFloat32Array_static π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMMatrixReadOnly.fromFloat64Array_static π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMMatrixReadOnly.fromMatrix_static π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMMatrixReadOnly.inverse π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.is2D π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.isIdentity π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.DOMMatrixReadOnly.m11 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m12 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m13 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m14 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m21 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m22 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m23 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m24 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m31 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m32 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m33 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m34 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m41 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m42 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m43 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.m44 π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.multiply π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.rotate π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.rotateAxisAngle π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.rotateFromVector π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.scale π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | Firefox: Firefox 69 introduced support for the modern six-parameter syntax for scale(). Previously, it only supported the older three-parameter syntax: scale(scaleX[, originX][, originY]]]).Firefox for Android: Firefox for Android 79 introduced support for the modern six-parameter syntax for scale(). Previously, it only supported the older three-parameter syntax: scale(scaleX[, originX][, originY]]]). |
| api.DOMMatrixReadOnly.scale3d π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | Firefox: Starting in Firefox 69, the first parameter ( scale) is now optional with a default value of 1, per the specification. Previously it was required.Firefox for Android: Starting in Firefox for Android 79, the first parameter (scale) is now optional with a default value of 1, per the specification. Previously it was required. |
| api.DOMMatrixReadOnly.scaleNonUniform π | Firefox | 10/14/2014 | Safari | 3/5/2024 | 3430 | |
| api.DOMMatrixReadOnly.skewX π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | Firefox: Before Firefox 69, the sx parameter was required; you may now call skewX() with no inputs. A value of 0 is correctly assumed.Firefox for Android: Before Firefox for Android 79, the sx parameter was required; you may now call skewX() with no inputs. A value of 0 is correctly assumed. |
| api.DOMMatrixReadOnly.skewY π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | Firefox: Before Firefox 69, the sy parameter was required; you may now call skewY() with no inputs. A value of 0 is correctly assumed.Firefox for Android: Before Firefox for Android 79, the sy parameter was required; you may now call skewY() with no inputs. A value of 0 is correctly assumed. |
| api.DOMMatrixReadOnly.toFloat32Array π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.toFloat64Array π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.toJSON π | Safari | 9/19/2017 | Firefox | 9/5/2018 | 351 | |
| api.DOMMatrixReadOnly.toString | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.transformPoint π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.translate π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.DOMMatrixReadOnly.worker_support | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMParser π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.DOMParser.DOMParser π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.DOMParser.parseFromString π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.DOMParser.parseFromString.html | Firefox | 4/24/2012 | Safari | 3/21/2016 | 1427 | |
| api.DOMParser.parseFromString.svg | Safari | 10/26/2007 | Firefox | 1/31/2012 | 1558 | |
| api.DOMParser.parseFromString.xml | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.DOMPoint π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPoint.DOMPoint π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPoint.fromPoint_static π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| api.DOMPoint.w π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPoint.worker_support | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.DOMPoint.x π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPoint.y π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPoint.z π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPointReadOnly π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPointReadOnly.DOMPointReadOnly π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| api.DOMPointReadOnly.fromPoint_static π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| api.DOMPointReadOnly.matrixTransform π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMPointReadOnly.toJSON π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| api.DOMPointReadOnly.w π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPointReadOnly.worker_support | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.DOMPointReadOnly.x π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPointReadOnly.y π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMPointReadOnly.z π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMQuad π | Firefox | 7/22/2014 | Safari | 9/19/2017 | 1155 | |
| api.DOMQuad.DOMQuad π | Firefox | 7/22/2014 | Safari | 9/19/2017 | 1155 | |
| api.DOMQuad.fromQuad_static π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMQuad.fromRect_static π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMQuad.getBounds π | Safari | 9/19/2017 | Firefox | 9/5/2018 | 351 | |
| api.DOMQuad.p1 π | Firefox | 7/22/2014 | Safari | 9/19/2017 | 1155 | Firefox: Before Firefox 69, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.Firefox for Android: Before Firefox for Android 79, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false. |
| api.DOMQuad.p2 π | Firefox | 7/22/2014 | Safari | 9/19/2017 | 1155 | Firefox: Before Firefox 69, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.Firefox for Android: Before Firefox for Android 79, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false. |
| api.DOMQuad.p3 π | Firefox | 7/22/2014 | Safari | 9/19/2017 | 1155 | Firefox: Before Firefox 69, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.Firefox for Android: Before Firefox for Android 79, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false. |
| api.DOMQuad.p4 π | Firefox | 7/22/2014 | Safari | 9/19/2017 | 1155 | Firefox: Before Firefox 69, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.Firefox for Android: Before Firefox for Android 79, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false. |
| api.DOMQuad.toJSON π | Safari | 9/19/2017 | Firefox | 9/5/2018 | 351 | |
| api.DOMQuad.worker_support | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.DOMRect π | Firefox | 2/4/2014 | Safari | 3/27/2017 | 1147 | |
| api.DOMRect.DOMRect π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMRect.fromRect_static π | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.DOMRect.height π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRect.width π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRect.worker_support | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.DOMRect.x π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMRect.y π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMRectList π | Firefox | 2/4/2014 | Safari | 3/27/2017 | 1147 | |
| api.DOMRectList.item π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRectList.length π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRectReadOnly π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMRectReadOnly.DOMRectReadOnly π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| api.DOMRectReadOnly.bottom π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRectReadOnly.fromRect_static π | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.DOMRectReadOnly.height π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRectReadOnly.left π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRectReadOnly.right π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRectReadOnly.toJSON π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| api.DOMRectReadOnly.top π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRectReadOnly.width π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.DOMRectReadOnly.worker_support | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.DOMRectReadOnly.x π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMRectReadOnly.y π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.DOMStringList π | Firefox | 11/9/2004 | Safari | 7/20/2011 | 2444 | |
| api.DOMStringList.contains π | Firefox | 11/29/2005 | Safari | 7/20/2011 | 2059 | |
| api.DOMStringList.item π | Firefox | 11/9/2004 | Safari | 7/20/2011 | 2444 | |
| api.DOMStringList.length π | Firefox | 11/9/2004 | Safari | 7/20/2011 | 2444 | |
| api.DOMStringMap π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.DOMTokenList π | Firefox | 1/21/2010 | Safari | 7/20/2011 | 545 | |
| api.DOMTokenList.@@iterator | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.DOMTokenList.add π | Firefox | 1/21/2010 | Safari | 7/20/2011 | 545 | |
| api.DOMTokenList.add.multiple_parameters | Safari | 10/22/2013 | Firefox | 12/10/2013 | 49 | |
| api.DOMTokenList.contains π | Firefox | 1/21/2010 | Safari | 7/20/2011 | 545 | |
| api.DOMTokenList.entries | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.DOMTokenList.forEach | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.DOMTokenList.item π | Firefox | 1/21/2010 | Safari | 7/20/2011 | 545 | |
| api.DOMTokenList.keys | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.DOMTokenList.length π | Firefox | 1/21/2010 | Safari | 7/20/2011 | 545 | |
| api.DOMTokenList.remove π | Firefox | 1/21/2010 | Safari | 7/20/2011 | 545 | |
| api.DOMTokenList.remove.multiple_parameters | Safari | 10/22/2013 | Firefox | 12/10/2013 | 49 | |
| api.DOMTokenList.remove_duplicates | Safari | 9/20/2016 | Firefox | 8/8/2017 | 322 | |
| api.DOMTokenList.replace π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.DOMTokenList.replace.boolean_value | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | |
| api.DOMTokenList.supports π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.DOMTokenList.toString π | Firefox | 1/21/2010 | Safari | 7/20/2011 | 545 | |
| api.DOMTokenList.toggle π | Firefox | 1/21/2010 | Safari | 7/20/2011 | 545 | |
| api.DOMTokenList.toggle.force_parameter | Firefox | 9/17/2013 | Safari | 10/22/2013 | 35 | |
| api.DOMTokenList.trim_whitespace | Safari | 9/20/2016 | Firefox | 1/24/2017 | 126 | |
| api.DOMTokenList.value π | Firefox | 6/7/2016 | Safari | 9/20/2016 | 105 | Chrome: Before Chrome 50, this property was part of the deprecated child DOMSettableTokenList interface.Chrome Android: Before Chrome Android 50, this property was part of the deprecated child DOMSettableTokenList interface.Quest Browser: Before Quest Browser 5.0, this property was part of the deprecated child DOMSettableTokenList interface.Opera: Before Opera 37, this property was part of the deprecated child DOMSettableTokenList interface.Opera Android: Before Opera Android 37, this property was part of the deprecated child DOMSettableTokenList interface.Samsung Internet: Before Samsung Internet 5.0, this property was part of the deprecated child DOMSettableTokenList interface.WebView Android: Before WebView Android 50, this property was part of the deprecated child DOMSettableTokenList interface. |
| api.DOMTokenList.values | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.DataTransfer π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Firefox: As of Firefox 52, the DataTransfer.types property returns a frozen array of DOMStrings as per spec, rather than a DOMStringList.Firefox for Android: As of Firefox for Android 52, the DataTransfer.types property returns a frozen array of DOMStrings as per spec, rather than a DOMStringList. |
| api.DataTransfer.DataTransfer π | Firefox | 9/5/2018 | Safari | 4/26/2021 | 964 | |
| api.DataTransfer.clearData π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.DataTransfer.dropEffect π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.DataTransfer.effectAllowed π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.DataTransfer.files π | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| api.DataTransfer.getData π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.DataTransfer.items π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.DataTransfer.setData π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.DataTransfer.setDragImage π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.DataTransfer.types π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Internet Explorer: The property returns a DOMStringList.Internet Explorer: Text is returned instead of text/plainOpera: As of Opera 12, Text is returned instead of text/plain |
| api.DataTransferItem π | Safari | 7/20/2011 | Firefox | 11/15/2016 | 1945 | |
| api.DataTransferItem.getAsFile π | Safari | 7/20/2011 | Firefox | 11/15/2016 | 1945 | |
| api.DataTransferItem.getAsString π | Safari | 7/20/2011 | Firefox | 11/15/2016 | 1945 | |
| api.DataTransferItem.kind π | Safari | 7/20/2011 | Firefox | 11/15/2016 | 1945 | |
| api.DataTransferItem.type π | Safari | 7/20/2011 | Firefox | 11/15/2016 | 1945 | |
| api.DataTransferItem.webkitGetAsEntry π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.DataTransferItemList π | Safari | 7/25/2012 | Firefox | 11/15/2016 | 1574 | |
| api.DataTransferItemList.add π | Safari | 7/25/2012 | Firefox | 11/15/2016 | 1574 | |
| api.DataTransferItemList.clear π | Safari | 7/25/2012 | Firefox | 11/15/2016 | 1574 | |
| api.DataTransferItemList.length π | Safari | 7/25/2012 | Firefox | 11/15/2016 | 1574 | |
| api.DataTransferItemList.remove π | Safari | 7/25/2012 | Firefox | 11/15/2016 | 1574 | |
| api.DecompressionStream π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | Node.js: Available as a part of the stream/web module. |
| api.DecompressionStream.DecompressionStream π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.DecompressionStream.DecompressionStream.deflate π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.DecompressionStream.DecompressionStream.deflate-raw π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.DecompressionStream.DecompressionStream.gzip π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.DecompressionStream.readable π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.DecompressionStream.writable π | Safari | 3/27/2023 | Firefox | 5/9/2023 | 43 | |
| api.DedicatedWorkerGlobalScope π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.DedicatedWorkerGlobalScope.cancelAnimationFrame π | Firefox | 4/5/2022 | Safari | 3/27/2023 | 356 | |
| api.DedicatedWorkerGlobalScope.close π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.DedicatedWorkerGlobalScope.message_event π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.DedicatedWorkerGlobalScope.messageerror_event π | Firefox | 11/14/2017 | Safari | 3/27/2023 | 1959 | |
| api.DedicatedWorkerGlobalScope.name π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.DedicatedWorkerGlobalScope.postMessage π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Deno: The message parameter does not support cloning Blob values.Deno: The message parameter does not support cloning Blob values.Deno: The transfer parameter does not accept ArrayBuffer items. Passing an ArrayBuffer results in an error being thrown.Deno: The message parameter does not support cloning SharedArrayBuffer or Blob values.Deno: The transfer parameter is ignored.Deno: Data passed in the message parameter is serialized with JSON, not the structured clone algorithm.Deno: The transfer parameter is ignored. |
| api.DedicatedWorkerGlobalScope.requestAnimationFrame π | Firefox | 4/5/2022 | Safari | 3/27/2023 | 356 | Chrome: Not supported in nested Web Workers. See bug 41483010.Chrome Android: Not supported in nested Web Workers. See bug 41483010.Edge: Not supported in nested Web Workers. See bug 41483010.Quest Browser: Not supported in nested Web Workers. See bug 41483010.Opera: Not supported in nested Web Workers. See bug 41483010.Opera Android: Not supported in nested Web Workers. See bug 41483010.Samsung Internet: Not supported in nested Web Workers. See bug 41483010. |
| api.DedicatedWorkerGlobalScope.rtctransform_event π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.DelayNode π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.DelayNode.DelayNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.DelayNode.delayTime π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.DeviceMotionEvent π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.DeviceMotionEvent.acceleration π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.DeviceMotionEvent.accelerationIncludingGravity π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.DeviceMotionEvent.interval π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.DeviceMotionEvent.rotationRate π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.DeviceOrientationEvent π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | Chrome: Before version 50, Chrome provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event.Chrome Android: Before version 50, Chrome Android provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event.Firefox: Firefox 3.6, 4, and 5 supported mozOrientation instead of the standard DeviceOrientationEvent interface.Firefox for Android: Firefox for Android 4.6, 4, and 5 supported mozOrientation instead of the standard DeviceOrientationEvent interface.Quest Browser: Before version 5.0, Quest Browser provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event.Samsung Internet: Before Samsung Internet 5.0, Samsung Internet provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event.WebView Android: Before version 50, Chrome provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event. |
| api.DeviceOrientationEvent.absolute π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.DeviceOrientationEvent.alpha π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.DeviceOrientationEvent.beta π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.DeviceOrientationEvent.gamma π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.Document π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.DOMContentLoaded_event π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.Document.Document π | Firefox | 4/2/2013 | Safari | 10/16/2014 | 562 | |
| api.Document.URL π | Safari | 10/26/2007 | Firefox | 2/19/2013 | 1943 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.activeElement π | Firefox | 6/17/2008 | Safari | 10/22/2013 | 1953 | Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.adoptNode π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Document.adoptedStyleSheets π | Firefox | 5/31/2022 | Safari | 3/27/2023 | 300 | |
| api.Document.alinkColor π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.all π | Safari | 9/19/2017 | Firefox | 10/22/2019 | 763 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.anchors π | Safari | 6/8/2009 | Firefox | 6/26/2018 | 3305 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.append π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.Document.applets π | Safari | 6/8/2009 | Firefox | 6/26/2018 | 3305 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.bgColor π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.body π | Safari | 6/23/2003 | Firefox | 5/9/2018 | 5434 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects. |
| api.Document.captureEvents π | Safari | 9/19/2017 | Firefox | 10/22/2019 | 763 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.characterSet π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Chrome: charset alias was made read-only in Chrome 45.Chrome Android: charset alias was made read-only in Chrome Android 45.Quest Browser: charset alias was made read-only in Quest Browser 5.0.Opera: charset alias was made read-only in Opera 45.Opera Android: charset alias was made read-only in Opera 45.Samsung Internet: charset alias was made read-only in Samsung Internet 5.0.WebView Android: charset alias was made read-only in WebView 45. |
| api.Document.childElementCount π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.Document.children π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.Document.clear π | Safari | 9/19/2017 | Firefox | 10/22/2019 | 763 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.close π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.compatMode π | Safari | 7/20/2011 | Firefox | 2/19/2013 | 580 | Chrome: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.contentType π | Firefox | 11/9/2004 | Safari | 9/30/2015 | 3977 | |
| api.Document.cookie π | Safari | 6/8/2009 | Firefox | 7/9/2019 | 3683 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.createAttribute π | Safari | 6/23/2003 | Firefox | 1/26/2016 | 4600 | Firefox: The parameter was not converted to its lowercase variant.Firefox for Android: The parameter was not converted to its lowercase variant. |
| api.Document.createAttributeNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.createCDATASection π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.createComment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.createDocumentFragment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.createElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Doesn't conform to the DOM spec for XUL and XHTML documents: localName and namespaceURI are not set to null on the created element. |
| api.Document.createElementNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Doesn't conform to the DOM spec for XUL and XHTML documents: localName and namespaceURI are not set to null on the created element. |
| api.Document.createEvent π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: From version 67, creating touch events using this method is no longer supported. |
| api.Document.createExpression π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Document.createNSResolver π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Document.createNodeIterator π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Document.createProcessingInstruction π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.createRange π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.createTextNode π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.createTreeWalker π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Document.createTreeWalker.whatToShow_filter_parameters_optional | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.Document.currentScript π | Firefox | 3/22/2011 | Safari | 10/16/2014 | 1304 | |
| api.Document.defaultView π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.designMode π | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.dir π | Firefox | 11/9/2004 | Safari | 3/27/2017 | 4521 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Incorrect behavior before Firefox 23.Firefox for Android: Incorrect behavior before Firefox for Android 23.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.doctype π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.documentElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.documentURI π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Document.domain π | Safari | 6/23/2003 | Firefox | 9/3/2019 | 5916 | Chrome: Since Chrome 115, setting domain has no effect, unless the website has opted into origin-keyed agent clusters.Chrome Android: Since Chrome Android 115, setting domain has no effect, unless the website has opted into origin-keyed agent clusters.Firefox: From Firefox 62, if the domain cannot be identified, domain returns an empty string instead of null. See bug 819475.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: From Firefox for Android 62, if the domain cannot be identified, domain returns an empty string instead of null. See bug 819475.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Quest Browser: Since Quest Browser false, setting domain has no effect, unless the website has opted into origin-keyed agent clusters.Samsung Internet: Since Samsung Internet 23.0, setting domain has no effect, unless the website has opted into origin-keyed agent clusters.WebView Android: Since WebView Android 115, setting domain has no effect, unless the website has opted into origin-keyed agent clusters. |
| api.Document.elementFromPoint π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | Chrome: Before Chrome 66, this method returned null when the element was a child of a host node. See bug 40537452.Chrome Android: Before Chrome Android 66, this method returned null when the element was a child of a host node. See bug 40537452.Quest Browser: Before Quest Browser 5.0, this method returned null when the element was a child of a host node. See bug 40537452.Opera: Before Opera 53, this method returned null when the element was a child of a host node. See bug 40537452.Opera Android: Before Opera Android 47, this method returned null when the element was a child of a host node. See bug 40537452.Samsung Internet: Before Samsung Internet 9.0, this method returned null when the element was a child of a host node. See bug 40537452.WebView Android: Before WebView 66, this method returned null when the element was a child of a host node. See bug 40537452. |
| api.Document.elementsFromPoint π | Firefox | 4/26/2016 | Safari | 4/12/2018 | 716 | Chrome: Before Chrome 66, this method returned null when the element was a child of a host node. See bug 40537452.Chrome Android: Before Chrome Android 66, this method returned null when the element was a child of a host node. See bug 40537452.Edge: Returns a NodeList instead of an array. See the MSDN documentation. Returns null when the point provided has no elements beneath it (e.g., when given a point outside the document).Internet Explorer: Returns a NodeList instead of an array. See the MSDN documentation. Returns null when the point provided has no elements beneath it (e.g., when given a point outside the document).Quest Browser: Before Quest Browser 5.0, this method returned null when the element was a child of a host node. See bug 40537452.Samsung Internet: Before Samsung Internet 9.0, this method returned null when the element was a child of a host node. See bug 40537452.WebView Android: Before WebView Android 66, this method returned null when the element was a child of a host node. See bug 40537452. |
| api.Document.embeds π | Safari | 3/27/2017 | Firefox | 6/26/2018 | 456 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.evaluate π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Document.execCommand | Safari | 4/15/2005 | Firefox | 9/3/2019 | 5254 | Firefox: From Firefox 82, nested calls are not supported (return false). See bug 1634262.Firefox: Before Firefox 89, manipulating the content of <input> and <textarea> elements using Document.execCommand() commands requires workarounds (see bug 1220696).Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: From Firefox for Android 82, nested calls are not supported (return false). See bug 1634262.Firefox for Android: Before Firefox for Android 89, manipulating the content of <input> and <textarea> elements using Document.execCommand() commands requires workarounds (see bug 1220696).Firefox for Android: Only supported for HTMLDocument, not all Document objects. |
| api.Document.execCommand.copy | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.Document.execCommand.cut | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.Document.exitFullscreen π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone. |
| api.Document.exitFullscreen.returns_promise | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | |
| api.Document.exitPointerLock π | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.Document.fgColor π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.firstElementChild π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.Document.fonts π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.Document.forms π | Safari | 6/8/2009 | Firefox | 6/26/2018 | 3305 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.fullscreen π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone. |
| api.Document.fullscreenElement π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.WebView on iOS: Only available on iPad, not on iPhone.WebView on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.WebView on iOS: Only available on iPad, not on iPhone. |
| api.Document.fullscreenEnabled π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone. |
| api.Document.fullscreenchange_event π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone. |
| api.Document.fullscreenerror_event π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone. |
| api.Document.getAnimations π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | Safari: Implements an older version of the specification, see bug 179536.Safari on iOS: Implements an older version of the specification, see bug 179536.WebView on iOS: Implements an older version of the specification, see bug 179536. |
| api.Document.getElementById π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.getElementsByClassName π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| api.Document.getElementsByName π | Safari | 6/8/2009 | Firefox | 1/23/2018 | 3151 | Edge: Before Edge 79, this method returns an HTMLCollection, not a NodeList.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Internet Explorer: Returns an HTMLCollection, not a NodeListSafari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.getElementsByTagName π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.getElementsByTagNameNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.getSelection π | Safari | 6/8/2009 | Firefox | 11/14/2017 | 3081 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects. |
| api.Document.hasFocus π | Firefox | 6/17/2008 | Safari | 10/22/2013 | 1953 | Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.hasStorageAccess π | Safari | 4/12/2018 | Firefox | 1/29/2019 | 292 | |
| api.Document.head π | Safari | 6/7/2010 | Firefox | 6/26/2018 | 2941 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects. |
| api.Document.hidden π | Firefox | 1/8/2013 | Safari | 10/22/2013 | 287 | Firefox: Since Firefox 56 it also returns true on macOS when the window is completely hidden by another non-translucent application.Firefox for Android: Since Firefox for Android 56 it also returns true on macOS when the window is completely hidden by another non-translucent application. |
| api.Document.images π | Safari | 6/8/2009 | Firefox | 6/26/2018 | 3305 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.implementation π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.importNode π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.lastElementChild π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.Document.lastModified π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.linkColor π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.links π | Safari | 6/8/2009 | Firefox | 6/26/2018 | 3305 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.location π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.open π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.parseHTMLUnsafe_static π | Safari | 3/5/2024 | Firefox | 7/9/2024 | 126 | Firefox: Throws error NS_ERROR_UNEXPECTED (bug 1887817.)Firefox for Android: Throws error NS_ERROR_UNEXPECTED (bug 1887817.) |
| api.Document.plugins π | Safari | 3/27/2017 | Firefox | 6/26/2018 | 456 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.pointerLockElement π | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.Document.pointerlockchange_event π | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.Document.pointerlockerror_event π | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.Document.prepend π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.Document.queryCommandEnabled | Safari | 4/29/2005 | Firefox | 9/3/2019 | 5240 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox: queryCommandEnabled with arguments cut, copy or paste would throw errors unless the script had special privileges.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Firefox for Android: queryCommandEnabled with arguments cut, copy or paste would throw errors unless the script had special privileges. |
| api.Document.queryCommandIndeterm | Safari | 4/29/2005 | Firefox | 9/3/2019 | 5240 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects. |
| api.Document.queryCommandState | Safari | 4/29/2005 | Firefox | 9/3/2019 | 5240 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects. |
| api.Document.queryCommandSupported | Safari | 4/29/2005 | Firefox | 9/3/2019 | 5240 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox: The "paste" command is reported as supported when the paste feature is available even if the calling script has insufficient privileges to actually perform the action.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Firefox for Android: The "paste" command is reported as supported when the paste feature is available even if the calling script has insufficient privileges to actually perform the action. |
| api.Document.queryCommandValue | Safari | 4/29/2005 | Firefox | 9/3/2019 | 5240 | Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects. |
| api.Document.querySelector π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors. |
| api.Document.querySelectorAll π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors. |
| api.Document.readyState π | Safari | 6/23/2003 | Firefox | 1/21/2010 | 2404 | Internet Explorer: Internet Explorer 9 and 10 have bugs where the 'interactive' state can be fired too early before the document has finished parsing.Internet Explorer: Only supports 'complete'.Opera: Opera Presto fires 'complete' late after the 'load' event (in an incorrect order as per HTML5 standard specification).Opera Android: Opera Presto fires 'complete' late after the 'load' event (in an incorrect order as per HTML5 standard specification). |
| api.Document.readystatechange_event π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.Document.referrer π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Document.releaseEvents π | Safari | 9/19/2017 | Firefox | 10/22/2019 | 763 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.replaceChildren π | Firefox | 6/30/2020 | Safari | 9/16/2020 | 78 | |
| api.Document.requestStorageAccess π | Safari | 4/12/2018 | Firefox | 1/29/2019 | 292 | Safari: Client-side storage access granted per-page (see explanation)Safari on iOS: Client-side storage access granted per-page (see explanation)WebView on iOS: Client-side storage access granted per-page (see explanation) |
| api.Document.rootElement π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| api.Document.scripts π | Safari | 3/27/2017 | Firefox | 6/26/2018 | 456 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.scroll_event π | Safari | 4/29/2005 | Firefox | 8/16/2011 | 2300 | |
| api.Document.scrollingElement π | Safari | 9/30/2015 | Firefox | 8/2/2016 | 307 | |
| api.Document.securitypolicyviolation_event π | Firefox | 10/5/2021 | Safari | 3/14/2022 | 160 | |
| api.Document.selectionchange_event π | Safari | 7/20/2011 | Firefox | 3/7/2017 | 2057 | |
| api.Document.styleSheets π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| api.Document.timeline π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.Document.title π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Safari: Only supported for HTMLDocument and XMLDocument, but not SVGDocument objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument and XMLDocument, but not SVGDocument objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument and XMLDocument, but not SVGDocument objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.visibilityState π | Firefox | 1/8/2013 | Safari | 10/22/2013 | 287 | |
| api.Document.visibilitychange_event π | Firefox | 9/28/2017 | Safari | 4/26/2021 | 1306 | Chrome: The onvisibilitychange event handler property is not supported.Chrome: The onvisibilitychange event handler property is not supported.Chrome Android: The onvisibilitychange event handler property is not supported.Chrome Android: The onvisibilitychange event handler property is not supported.Edge: The onvisibilitychange event handler property is not supported.Internet Explorer: The onvisibilitychange event handler property is not supported.Quest Browser: The onvisibilitychange event handler property is not supported.Quest Browser: The onvisibilitychange event handler property is not supported.Opera: The onvisibilitychange event handler property is not supported.Opera: The onvisibilitychange event handler property is not supported.Opera: The onvisibilitychange event handler property is not supported.Opera Android: The onvisibilitychange event handler property is not supported.Opera Android: The onvisibilitychange event handler property is not supported.Opera Android: The onvisibilitychange event handler property is not supported.Safari: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari: Before Safari 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.Safari: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari: Before Safari 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.Safari: The onvisibilitychange event handler property is not supported.Safari on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari on iOS: Before Safari on iOS 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.Safari on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari on iOS: Before Safari on iOS 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.Safari on iOS: The onvisibilitychange event handler property is not supported.Samsung Internet: The onvisibilitychange event handler property is not supported.Samsung Internet: The onvisibilitychange event handler property is not supported.WebView Android: The onvisibilitychange event handler property is not supported.WebView Android: The onvisibilitychange event handler property is not supported.WebView on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.WebView on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.WebView on iOS: Before WebView on iOS 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.WebView on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.WebView on iOS: Before WebView on iOS 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.WebView on iOS: The onvisibilitychange event handler property is not supported. |
| api.Document.vlinkColor π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.write π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.Document.writeln π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects. |
| api.DocumentFragment π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.DocumentFragment.DocumentFragment π | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | |
| api.DocumentFragment.append π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.DocumentFragment.childElementCount π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.DocumentFragment.children π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.DocumentFragment.firstElementChild π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.DocumentFragment.getElementById π | Firefox | 3/18/2014 | Safari | 9/30/2015 | 561 | |
| api.DocumentFragment.lastElementChild π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| api.DocumentFragment.prepend π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.DocumentFragment.querySelector π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors. |
| api.DocumentFragment.querySelectorAll π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors. |
| api.DocumentFragment.replaceChildren π | Firefox | 6/30/2020 | Safari | 9/16/2020 | 78 | |
| api.DocumentTimeline π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.DocumentTimeline.DocumentTimeline π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.DocumentType π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.DocumentType.after π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.DocumentType.before π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.DocumentType.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.DocumentType.publicId π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.DocumentType.remove π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| api.DocumentType.replaceWith π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.DocumentType.systemId π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.DragEvent π | Firefox | 6/30/2009 | Safari | 9/16/2020 | 4096 | Internet Explorer: Before Internet Explorer 10, DragEvent is exposed in standards mode but not quirks mode. |
| api.DragEvent.DragEvent π | Firefox | 6/30/2009 | Safari | 9/16/2020 | 4096 | |
| api.DragEvent.dataTransfer π | Firefox | 6/30/2009 | Safari | 9/16/2020 | 4096 | Internet Explorer: The value is always null. |
| api.DynamicsCompressorNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.DynamicsCompressorNode.DynamicsCompressorNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.DynamicsCompressorNode.attack π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.DynamicsCompressorNode.knee π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.DynamicsCompressorNode.ratio π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.DynamicsCompressorNode.reduction π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | Chrome: Before version 52, this was an AudioParam..Chrome Android: Before version 52, this was an AudioParam..Quest Browser: Before version 5.0, this was an AudioParam..Samsung Internet: Before Samsung Internet 6.0, this was an AudioParam..WebView Android: Before version 52, this was an AudioParam.. |
| api.DynamicsCompressorNode.release π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.DynamicsCompressorNode.threshold π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.EXT_blend_minmax π | Safari | 9/30/2015 | Firefox | 6/7/2016 | 251 | Firefox: Not supported on Windows. |
| api.EXT_color_buffer_float π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.EXT_color_buffer_half_float π | Firefox | 6/7/2016 | Safari | 9/16/2020 | 1562 | Firefox: Not supported on Windows. |
| api.EXT_float_blend π | Firefox | 5/21/2019 | Safari | 4/26/2021 | 706 | Chrome Android: Until Chrome 77, this extension was unavailable on several Android devices powered by GLES 3.2. See bug 41459397.Quest Browser: Until Chrome 77, this extension was unavailable on several Android devices powered by GLES 3.2. See bug 41459397. |
| api.EXT_frag_depth π | Safari | 9/30/2015 | Firefox | 6/7/2016 | 251 | |
| api.EXT_sRGB π | Safari | 9/30/2015 | Firefox | 1/23/2018 | 846 | Firefox: Not supported on Windows. |
| api.EXT_shader_texture_lod π | Safari | 10/16/2014 | Firefox | 6/7/2016 | 600 | |
| api.EXT_texture_compression_bptc π | Firefox | 7/9/2019 | Safari | 9/12/2022 | 1161 | Chrome: Only supported on macOS.Edge: Only supported on macOS.Opera: Only supported on macOS. |
| api.EXT_texture_compression_rgtc π | Firefox | 1/29/2019 | Safari | 4/26/2021 | 818 | Chrome: Only supported on macOS.Edge: Only supported on macOS.Firefox: Only supported on macOS.Opera: Only supported on macOS. |
| api.EXT_texture_filter_anisotropic π | Safari | 3/21/2016 | Firefox | 6/7/2016 | 78 | |
| api.Element π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.DOMActivate_event π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.after π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.Element.animate π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Element.animate.implicit_tofrom | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | Safari: Implementation seems somewhat buggy. More information will follow when available.Safari on iOS: Implementation seems somewhat buggy. More information will follow when available.WebView on iOS: Implementation seems somewhat buggy. More information will follow when available. |
| api.Element.animate.options_composite_parameter π | Firefox | 8/25/2020 | Safari | 9/12/2022 | 748 | |
| api.Element.animate.options_id_parameter π | Firefox | 8/2/2016 | Safari | 3/24/2020 | 1330 | |
| api.Element.animate.options_pseudoElement_parameter π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| api.Element.animationcancel_event π | Firefox | 6/13/2017 | Safari | 3/24/2020 | 1015 | Chrome: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Chrome Android: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Edge: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Quest Browser: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Opera: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Opera Android: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Safari: Although the onanimationcancel event handler property is supported, the animationcancel event is never fired.Safari on iOS: Although the onanimationcancel event handler property is supported, the animationcancel event is never fired.Samsung Internet: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.WebView Android: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.WebView on iOS: Although the onanimationcancel event handler property is supported, the animationcancel event is never fired. |
| api.Element.animationend_event π | Safari | 9/30/2015 | Firefox | 1/24/2017 | 482 | Chrome: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Chrome Android: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Edge: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Firefox: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Firefox for Android: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Internet Explorer: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Quest Browser: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Opera: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Opera Android: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Samsung Internet: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.WebView Android: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});. |
| api.Element.animationiteration_event π | Safari | 9/30/2015 | Firefox | 1/24/2017 | 482 | Chrome: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Chrome Android: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Edge: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Firefox: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Firefox for Android: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Internet Explorer: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Quest Browser: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Opera: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Opera Android: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Samsung Internet: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.WebView Android: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});. |
| api.Element.animationstart_event π | Safari | 9/30/2015 | Firefox | 1/24/2017 | 482 | Chrome: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Chrome Android: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Edge: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Firefox: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Firefox for Android: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Internet Explorer: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Quest Browser: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Opera: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Opera Android: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Samsung Internet: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.WebView Android: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});. |
| api.Element.append π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.Element.ariaAtomic π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaAutoComplete π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaBrailleLabel π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| api.Element.ariaBrailleRoleDescription π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| api.Element.ariaBusy π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaChecked π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaColCount π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaColIndex π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaColSpan π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaCurrent π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaDescription π | Firefox | 10/24/2023 | Safari | 3/5/2024 | 133 | |
| api.Element.ariaDisabled π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaExpanded π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaHasPopup π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaHidden π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaInvalid π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaKeyShortcuts π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaLabel π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaLevel π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaLive π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaModal π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaMultiLine π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaMultiSelectable π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaOrientation π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaPlaceholder π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaPosInSet π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaPressed π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaReadOnly π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaRelevant | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaRequired π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaRoleDescription π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaRowCount π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaRowIndex π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaRowSpan π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaSelected π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaSetSize π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaSort π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaValueMax π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaValueMin π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaValueNow π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.ariaValueText π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.assignedSlot π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.Element.attachShadow π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.Element.attachShadow.options_clonable_parameter π | Firefox | 2/20/2024 | Safari | 3/5/2024 | 14 | |
| api.Element.attachShadow.options_delegatesFocus_parameter π | Safari | 3/24/2020 | Firefox | 11/2/2021 | 588 | |
| api.Element.attributes π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.auxclick_event π | Firefox | 4/19/2017 | Safari | 12/11/2024 | 2793 | Firefox: Starting in Firefox 68, the auxclick event is used to trigger the new tab on middle-click action; previously, this had been done with the click event. Apps can prevent middle-click from opening new tabs (or middle-click to paste, if that feature is enabled) by intercepting auxclick on links, and auxclick event handlers can now open popups without triggering the popup blocker. |
| api.Element.before π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.Element.beforeinput_event π | Safari | 3/27/2017 | Firefox | 3/23/2021 | 1457 | |
| api.Element.blur_event π | Safari | 3/18/2008 | Firefox | 9/17/2013 | 2009 | Firefox: The interface for this event is Event, not FocusEvent.Firefox for Android: The interface for this event is Event, not FocusEvent. |
| api.Element.checkVisibility π | Firefox | 10/18/2022 | Safari | 3/5/2024 | 504 | |
| api.Element.checkVisibility.options_checkOpacity_parameter π | Firefox | 10/18/2022 | Safari | 3/5/2024 | 504 | |
| api.Element.checkVisibility.options_checkVisibilityCSS_parameter π | Firefox | 10/18/2022 | Safari | 3/5/2024 | 504 | |
| api.Element.checkVisibility.options_contentVisibilityAuto_parameter π | Firefox | 1/23/2024 | Safari | 3/5/2024 | 42 | |
| api.Element.checkVisibility.options_opacityProperty_parameter π | Firefox | 1/23/2024 | Safari | 3/5/2024 | 42 | |
| api.Element.checkVisibility.options_visibilityProperty_parameter π | Firefox | 1/23/2024 | Safari | 3/5/2024 | 42 | |
| api.Element.childElementCount π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Element.children π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Internet Explorer: Also includes non-standard HTMLCommentElement nodes. |
| api.Element.classList π | Firefox | 1/21/2010 | Safari | 10/22/2013 | 1370 | Chrome: Not supported for SVG elements.Chrome Android: Not supported for SVG elements.Edge: Not supported for SVG elements.Internet Explorer: Not supported for SVG elements.Safari: Not supported for SVG elements.Safari on iOS: Not supported for SVG elements.Samsung Internet: Not supported for SVG elements.WebView Android: Not supported for SVG elements.WebView on iOS: Not supported for SVG elements. |
| api.Element.className π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Only supported for HTMLElement, not all Element objects, such as SVGElement.Chrome Android: Only supported for HTMLElement, not all Element objects, such as SVGElement.Samsung Internet: Only supported for HTMLElement, not all Element objects, such as SVGElement. |
| api.Element.click_event π | Safari | 10/26/2007 | Firefox | 8/16/2011 | 1390 | Firefox: Beginning in Firefox 68, Firefox no longer incorrectly sends a click event for buttons other than the primary mouse button; previously, there were circumstances in which this would occur. One example: middle-clicking a link would send a click to the document's <html> element. |
| api.Element.clientHeight π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Element.clientLeft π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.Element.clientTop π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.Element.clientWidth π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Element.closest π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| api.Element.compositionend_event π | Safari | 6/7/2010 | Firefox | 12/20/2011 | 561 | |
| api.Element.compositionstart_event π | Safari | 6/7/2010 | Firefox | 12/20/2011 | 561 | |
| api.Element.compositionupdate_event π | Safari | 6/7/2010 | Firefox | 12/20/2011 | 561 | |
| api.Element.contentvisibilityautostatechange_event π | Firefox | 9/3/2024 | Safari | 9/16/2024 | 13 | Firefox: The oncontentvisibilityautostatechange event handler property is not supported.Firefox for Android: The oncontentvisibilityautostatechange event handler property is not supported. |
| api.Element.contextmenu_event π | Safari | 10/26/2007 | Firefox | 8/16/2011 | 1390 | |
| api.Element.copy_event π | Safari | 10/26/2007 | Firefox | 6/25/2013 | 2069 | Internet Explorer: Before Internet Explorer 9, this event is not supported via addEventListener; however, the event handler is supported since IE 5.5. The event can be listened to via element.oncopy. |
| api.Element.cut_event π | Safari | 10/26/2007 | Firefox | 6/25/2013 | 2069 | Internet Explorer: Before Internet Explorer 9, this event is not supported via addEventListener; however, the event handler is supported since IE 5.5. The event can be listened to via element.oncopy. |
| api.Element.dblclick_event π | Safari | 10/26/2007 | Firefox | 8/16/2011 | 1390 | Firefox: Starting in Firefox 68, dblclick events are only sent for the primary mouse button, per the specification. |
| api.Element.firstElementChild π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Element.focus_event π | Safari | 3/18/2008 | Firefox | 9/17/2013 | 2009 | Firefox: The interface for this event is Event, not FocusEvent.Firefox for Android: The interface for this event is Event, not FocusEvent. |
| api.Element.focusin_event π | Safari | 6/7/2010 | Firefox | 3/7/2017 | 2465 | Chrome: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Chrome Android: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Edge: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Firefox: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Firefox for Android: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Quest Browser: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Samsung Internet: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});. |
| api.Element.focusout_event π | Safari | 6/7/2010 | Firefox | 3/7/2017 | 2465 | Chrome: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Chrome Android: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Edge: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Firefox: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Firefox for Android: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Quest Browser: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Samsung Internet: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});. |
| api.Element.fullscreenchange_event π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone. |
| api.Element.fullscreenerror_event π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone. |
| api.Element.getAnimations π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| api.Element.getAttribute π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.getAttributeNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Starting in Firefox 13, null is always returned instead of the empty string, as per the DOM4 specification. Previously, there were cases in which an empty string could be returned.Firefox for Android: Starting in Firefox for Android 14, null is always returned instead of the empty string, as per the DOM4 specification. Previously, there were cases in which an empty string could be returned. |
| api.Element.getAttributeNames π | Firefox | 3/8/2016 | Safari | 3/27/2017 | 384 | |
| api.Element.getAttributeNode π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.getAttributeNodeNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.getBoundingClientRect π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | Safari on iOS: Safari for iOS will modify the effective viewport based on the user zoom. This results in incorrect values whenever the user has zoomed.WebView on iOS: Safari for iOS will modify the effective viewport based on the user zoom. This results in incorrect values whenever the user has zoomed. |
| api.Element.getClientRects π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.Element.getElementsByClassName π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Firefox: Before Firefox 19, this method was returning a NodeList; it was then changed to reflect the change in the spec.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement. |
| api.Element.getElementsByTagName π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Chrome Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Firefox: Before Firefox 19, this method was returning a NodeList; it was then changed to reflect the change in the spec.Firefox for Android: Before Firefox for Android 19, this method was returning a NodeList; it was then changed to reflect the change in the spec.Quest Browser: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Opera: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Safari: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Safari on iOS: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Samsung Internet: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.WebView Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.WebView on iOS: Initially, this method was returning a NodeList; it was then changed to reflect the spec change. |
| api.Element.getElementsByTagName.all_elements_selector | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.getElementsByTagNameNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Chrome Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Firefox: The behavior of element.getElementsByTagNameNS changed between Firefox 3.5 and Firefox 3.6. In Firefox 3.5 and before, this function would automatically case-fold any queries so that a search for "foo" would match "Foo" or "foo". In Firefox 3.6 and later this function is now case-sensitive so that a query for "foo" will only match "foo" and not "Foo". For more background on this, please see the comment from Henri Sivonen about the change. You can also look at the relevant part of the standard, which states which parts of the API are case-sensitive and which parts aren't.Firefox: Before Firefox 19, this method was returning a NodeList; it was then changed to reflects the spec change.Firefox for Android: Before Firefox 19, this method was returning a NodeList; it was then changed to reflects the spec change.Quest Browser: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Opera: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Opera Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Safari: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Safari on iOS: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Samsung Internet: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.WebView Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.WebView on iOS: Initially, this method was returning a NodeList; it was then changed to reflect the spec change. |
| api.Element.getElementsByTagNameNS.all_elements_selector | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.getHTML π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | |
| api.Element.gotpointercapture_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.hasAttribute π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.hasAttributeNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.hasAttributes π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 35, it was implemented on the Node interface.Firefox for Android: Before Firefox for Android 35, it was implemented on the Node interface. |
| api.Element.hasPointerCapture π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.id π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Only supported for HTMLElement, not all Element objects, such as SVGElement.Chrome Android: Only supported for HTMLElement, not all Element objects, such as SVGElement.Samsung Internet: Only supported for HTMLElement, not all Element objects, such as SVGElement. |
| api.Element.innerHTML π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.input_event π | Safari | 3/18/2008 | Firefox | 8/16/2011 | 1246 | Edge: Not supported on select, checkbox, or radio inputs.Internet Explorer: Only supports input of type text and password. |
| api.Element.insertAdjacentElement π | Safari | 10/26/2007 | Firefox | 8/2/2016 | 3203 | Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement. |
| api.Element.insertAdjacentHTML π | Safari | 6/8/2009 | Firefox | 11/8/2011 | 883 | Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Internet Explorer: Before Internet Explorer 10, throws an "Invalid target element for this operation." error when called on a <table>, <tbody>, <thead>, or <tr> element.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement. |
| api.Element.insertAdjacentText π | Safari | 6/8/2009 | Firefox | 8/2/2016 | 2612 | Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement. |
| api.Element.keydown_event π | Safari | 2/2/2004 | Firefox | 8/16/2011 | 2752 | |
| api.Element.keypress_event π | Safari | 4/15/2005 | Firefox | 8/16/2011 | 2314 | Chrome: Chrome does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Chrome Android: Chrome Android does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Firefox: As of Firefox 65, the keypress event is no longer fired for non-printable keys, except for the Enter key, and the Shift + Enter and Ctrl + Enter key combinations (these were kept for cross-browser compatibility purposes).Firefox for Android: As of Firefox for Android 65, the keypress event is no longer fired for non-printable keys, except for the Enter key, and the Shift + Enter and Ctrl + Enter key combinations (these were kept for cross-browser compatibility purposes).Quest Browser: Quest Browser does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Opera: Opera does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Opera Android: Opera does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Samsung Internet: Samsung Internet does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.WebView Android: Chrome does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts. |
| api.Element.keyup_event π | Safari | 2/2/2004 | Firefox | 8/16/2011 | 2752 | |
| api.Element.lastElementChild π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Element.localName π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.lostpointercapture_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.matches π | Safari | 10/16/2014 | Firefox | 12/1/2014 | 46 | Firefox: Before Firefox 4, invalid selector strings caused false to be returned instead of throwing an exception.Firefox: See bug 1119718 for removal.Firefox for Android: See bug 1119718 for removal. |
| api.Element.mousedown_event π | Safari | 6/8/2009 | Firefox | 8/16/2011 | 799 | |
| api.Element.mouseenter_event π | Firefox | 1/31/2012 | Safari | 10/22/2013 | 630 | |
| api.Element.mouseleave_event π | Firefox | 1/31/2012 | Safari | 10/22/2013 | 630 | |
| api.Element.mousemove_event π | Safari | 6/8/2009 | Firefox | 8/16/2011 | 799 | |
| api.Element.mouseout_event π | Safari | 6/23/2003 | Firefox | 8/16/2011 | 2976 | |
| api.Element.mouseover_event π | Safari | 6/8/2009 | Firefox | 8/16/2011 | 799 | |
| api.Element.mouseup_event π | Safari | 6/8/2009 | Firefox | 8/16/2011 | 799 | |
| api.Element.namespaceURI π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.nextElementSibling π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Element.outerHTML π | Safari | 4/15/2005 | Firefox | 3/13/2012 | 2524 | |
| api.Element.part π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.Element.paste_event π | Safari | 10/26/2007 | Firefox | 6/25/2013 | 2069 | Internet Explorer: Before Internet Explorer 11, copying files does not trigger the paste event.Internet Explorer: Before Internet Explorer 9, this event is not supported via addEventListener; however, the event handler is supported since IE 5.5. The event can be listened to via element.oncopy. |
| api.Element.pointercancel_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.pointerdown_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.pointerenter_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.pointerleave_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.pointermove_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.pointerout_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.pointerover_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.pointerup_event π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.prefix π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.prepend π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.Element.previousElementSibling π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Element.querySelector π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Internet Explorer: querySelector() is supported, but only for CSS 2.1 selectors. |
| api.Element.querySelectorAll π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors. |
| api.Element.releasePointerCapture π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Element.remove π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| api.Element.removeAttribute π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: This function doesn't respect boolean attributes' default values. See bug 12087679. |
| api.Element.removeAttributeNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.removeAttributeNode π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.replaceChildren π | Firefox | 6/30/2020 | Safari | 9/16/2020 | 78 | |
| api.Element.replaceWith π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.Element.requestFullscreen π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Firefox: Before Firefox 44, Firefox incorrectly allowed elements inside a <frame> or <object> element to request, and to be granted, fullscreen. In Firefox 44 and onwards this has been fixed: only elements in the top-level document or in an <iframe> element with the allowfullscreen attribute can be displayed fullscreen.Firefox for Android: Before Firefox for Android 44, Firefox for Android incorrectly allowed elements inside a <frame> or <object> element to request, and to be granted, fullscreen. In Firefox for Android 44 and onwards this has been fixed: only elements in the top-level document or in an <iframe> element with the allowfullscreen attribute can be displayed fullscreen.Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone. Shows an overlay button which can not be disabled. |
| api.Element.requestFullscreen.returns_promise | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | |
| api.Element.requestPointerLock π | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | Chrome: From version 92, returns a promise instead of undefined. The behavior reflects a proposed specification change.Chrome Android: From version 92, returns a promise instead of undefined. The behavior reflects a proposed specification change.Edge: From version 92, returns a promise instead of undefined. The behavior reflects a proposed specification change.Quest Browser: From version 17.0, returns a promise instead of undefined. The behavior reflects a proposed specification change.Opera: From version 78, returns a promise instead of undefined. The behavior reflects a proposed specification change.Opera Android: From version 65, returns a promise instead of undefined. The behavior reflects a proposed specification change.Samsung Internet: From version 16, returns a promise instead of undefined. The behavior reflects a proposed specification change.WebView Android: From version 92, returns a promise instead of undefined. The behavior reflects a proposed specification change. |
| api.Element.role π | Safari | 3/25/2019 | Firefox | 10/24/2023 | 1674 | |
| api.Element.scroll π | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Element.scroll.options_behavior_parameter | Firefox | 2/24/2015 | Safari | 9/16/2020 | 2031 | |
| api.Element.scroll.options_left_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Element.scroll.options_top_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Element.scrollBy π | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Element.scrollBy.options_behavior_parameter | Firefox | 2/24/2015 | Safari | 9/16/2020 | 2031 | |
| api.Element.scrollBy.options_left_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Element.scrollBy.options_top_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Element.scrollHeight π | Safari | 6/23/2003 | Firefox | 5/14/2013 | 3613 | Firefox: Before Firefox 21, when an element's content does not generate a vertical scrollbar, then its scrollHeight property is equal to its clientHeight property. This can mean either the content is too short to require a scrollbar or that the element has a CSS style overflow value of visible (non-scrollable).Firefox for Android: Before Firefox for Android 21, when an element's content does not generate a vertical scrollbar, then its scrollHeight property is equal to its clientHeight property. This can mean either the content is too short to require a scrollbar or that the element has a CSS style overflow value of visible (non-scrollable).Internet Explorer: In Internet Explorer 5 through 7, if padding is set, the value of scrollHeight is equal to the sum of the top and bottom padding. This behavior was fixed in Internet Explorer 8. |
| api.Element.scrollIntoView π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Edge: The only parameter supported is alignToTop.Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Edge: No support for smooth behavior.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement.Internet Explorer: No support for smooth behavior or center options.Safari: No support for center option.Safari: Before Safari 15.4, there was no support for the smooth behavior.Safari on iOS: No support for center option.Safari on iOS: Before iOS 15.4, there was no support for the smooth behavior.WebView on iOS: No support for center option.WebView on iOS: Before iOS 15.4, there was no support for the smooth behavior. |
| api.Element.scrollIntoView.options_parameter | Firefox | 2/24/2015 | Safari | 9/16/2020 | 2031 | Chrome: The block and inline options support the values start, center, end, nearest.Chrome Android: The block and inline options support the values start, center, end, nearest.Edge: The block and inline options support the values start, center, end, nearest.Firefox: No support for inline option.Firefox: Before Firefox 58, nearest and center values for the block option was unsupported. See bug 1389274.Firefox for Android: No support for inline option.Firefox for Android: Before Firefox for Android 58, nearest and center values for the block option was unsupported. See bug 1389274.Quest Browser: The block and inline options support the values start, center, end, nearest.Opera: The block and inline options support the values start, center, end, nearest.Opera Android: The block and inline options support the values start, center, end, nearest.Samsung Internet: The block and inline options support the values start, center, end, nearest.WebView Android: The block and inline options support the values start, center, end, nearest. |
| api.Element.scrollLeft π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.Chrome Android: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.Edge: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.Internet Explorer: For right-to-left elements, this property uses 100-0 (most left to most right) instead of negative values.Quest Browser: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.Samsung Internet: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.WebView Android: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147. |
| api.Element.scrollTo π | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Element.scrollTo.options_behavior_parameter | Firefox | 2/24/2015 | Safari | 9/16/2020 | 2031 | |
| api.Element.scrollTo.options_left_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Element.scrollTo.options_top_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Element.scrollTop π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.scrollWidth π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: In Internet Explorer 5 through 7, if padding is set, the value of scrollWidth is equal to the sum of the left and right padding. This behavior was fixed in Internet Explorer 8. |
| api.Element.scroll_event π | Safari | 4/15/2005 | Firefox | 8/16/2011 | 2314 | |
| api.Element.securitypolicyviolation_event π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.Element.setAttribute π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: In Internet Explorer 7 and earlier, setAttribute doesn't set styles and removes events when you try to set them. |
| api.Element.setAttributeNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.setAttributeNode π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.setAttributeNodeNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: Returns a ClientRectList with ClientRect objects (which do not contain x and y properties) instead of DOMRect objects.Internet Explorer: Returns a ClientRectList with ClientRect objects (which do not contain x and y properties) instead of DOMRect objects. |
| api.Element.setHTMLUnsafe π | Firefox | 2/20/2024 | Safari | 3/5/2024 | 14 | |
| api.Element.setPointerCapture π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | Firefox: Before Firefox 82, setPointerCapture() throws InvalidPointerId for an invalid pointerId argument. From Firefox 82, it throws the specified NotFoundError exception. See bug 1662124.Firefox for Android: Before Firefox 82, setPointerCapture() throws InvalidPointerId for an invalid pointerId argument. From Firefox 82, it throws the specified NotFoundError exception. See bug 1662124. |
| api.Element.shadowRoot π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.Element.slot π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.Element.tagName π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Element.toggleAttribute π | Safari | 9/17/2018 | Firefox | 10/23/2018 | 36 | |
| api.Element.transitioncancel_event π | Firefox | 4/19/2017 | Safari | 3/24/2020 | 1070 | Chrome: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Chrome Android: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Edge: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Quest Browser: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Opera: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Opera Android: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Safari: Although the ontransitioncancel event handler property is supported, the transitioncancel event is never fired.Safari on iOS: Although the ontransitioncancel event handler property is supported, the transitioncancel event is never fired.Samsung Internet: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.WebView Android: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.WebView on iOS: Although the ontransitioncancel event handler property is supported, the transitioncancel event is never fired. |
| api.Element.transitionend_event π | Safari | 10/22/2013 | Firefox | 1/24/2017 | 1190 | Edge: The ontransitionend event handler property is not supported. To listen to this event, use element.addEventListener('transitionend', function() {});.Internet Explorer: The ontransitionend event handler property is not supported. To listen to this event, use element.addEventListener('transitionend', function() {});. |
| api.Element.transitionrun_event π | Firefox | 4/19/2017 | Safari | 3/24/2020 | 1070 | Internet Explorer: The ontransitionrun event handler property is not supported. To listen to this event, use element.addEventListener('transitionrun', function() {});.Safari: The event handler exists but will never be called.Safari on iOS: The event handler exists but will never be called.WebView on iOS: The event handler exists but will never be called. |
| api.Element.transitionstart_event π | Firefox | 4/19/2017 | Safari | 3/24/2020 | 1070 | Internet Explorer: The ontransitionstart event handler property is not supported. To listen to this event, use element.addEventListener('transitionstart', function() {});.Safari: The event handler exists but will never be called.Safari on iOS: The event handler exists but will never be called.WebView on iOS: The event handler exists but will never be called. |
| api.Element.wheel_event π | Firefox | 11/20/2012 | Safari | 10/22/2013 | 336 | Internet Explorer: The onwheel event handler property is not supported. To listen to this event, use element.addEventListener('wheel', function() {});. See IE bug 782835. |
| api.ElementInternals π | Firefox | 10/5/2021 | Safari | 3/27/2023 | 538 | |
| api.ElementInternals.ariaAtomic π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaAutoComplete π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaBrailleLabel π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| api.ElementInternals.ariaBrailleRoleDescription π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| api.ElementInternals.ariaBusy π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaChecked π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaColCount π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaColIndex π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaColSpan π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaCurrent π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaDisabled π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaExpanded π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaHasPopup π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaHidden π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaInvalid π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaKeyShortcuts π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaLabel π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaLevel π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaLive π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaModal π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaMultiLine π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaMultiSelectable π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaOrientation π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaPlaceholder π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaPosInSet π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaPressed π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaReadOnly π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaRelevant | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaRequired π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaRoleDescription π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaRowCount π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaRowIndex π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaRowSpan π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaSelected π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaSetSize π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaSort π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaValueMax π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaValueMin π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaValueNow π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.ariaValueText π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.checkValidity π | Firefox | 3/8/2022 | Safari | 3/27/2023 | 384 | |
| api.ElementInternals.form π | Firefox | 3/8/2022 | Safari | 3/27/2023 | 384 | |
| api.ElementInternals.labels π | Firefox | 3/8/2022 | Safari | 3/27/2023 | 384 | |
| api.ElementInternals.reportValidity π | Firefox | 3/8/2022 | Safari | 3/27/2023 | 384 | |
| api.ElementInternals.role π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| api.ElementInternals.setFormValue π | Firefox | 3/8/2022 | Safari | 3/27/2023 | 384 | |
| api.ElementInternals.setValidity π | Firefox | 3/8/2022 | Safari | 3/27/2023 | 384 | |
| api.ElementInternals.shadowRoot π | Firefox | 10/5/2021 | Safari | 3/27/2023 | 538 | |
| api.ElementInternals.states π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | |
| api.ElementInternals.validationMessage π | Firefox | 3/8/2022 | Safari | 3/27/2023 | 384 | |
| api.ElementInternals.validity π | Firefox | 3/8/2022 | Safari | 3/27/2023 | 384 | |
| api.ElementInternals.willValidate π | Firefox | 3/8/2022 | Safari | 3/27/2023 | 384 | |
| api.EncodedVideoChunk π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.EncodedVideoChunk.EncodedVideoChunk π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.EncodedVideoChunk.byteLength π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.EncodedVideoChunk.copyTo π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.EncodedVideoChunk.duration π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.EncodedVideoChunk.timestamp π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.EncodedVideoChunk.type π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.ErrorEvent π | Safari | 7/25/2012 | Firefox | 2/4/2014 | 559 | |
| api.ErrorEvent.ErrorEvent π | Safari | 7/25/2012 | Firefox | 2/4/2014 | 559 | |
| api.ErrorEvent.colno π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.ErrorEvent.error π | Firefox | 7/22/2014 | Safari | 9/20/2016 | 791 | |
| api.ErrorEvent.filename π | Safari | 7/25/2012 | Firefox | 2/4/2014 | 559 | |
| api.ErrorEvent.lineno π | Safari | 7/25/2012 | Firefox | 2/4/2014 | 559 | |
| api.ErrorEvent.message π | Safari | 7/25/2012 | Firefox | 2/4/2014 | 559 | |
| api.Event π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Node.js: Only available as an internal instance. |
| api.Event.Event π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| api.Event.bubbles π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | Node.js: This is not used in Node.js and is provided purely for completeness. |
| api.Event.cancelBubble π | Safari | 6/23/2003 | Firefox | 4/19/2017 | 5049 | Chrome: Starting with Chrome 58 and Opera 45, setting this property to false does nothing, as per spec discussion.Chrome Android: Starting with Chrome Android 58 and Opera 45, setting this property to false does nothing, as per spec discussion.Firefox: Only supported for UIEvent, not all Event objects.Firefox for Android: Only supported for UIEvent, not all Event objects.Node.js: This is not used in Node.js and is provided purely for completeness.Quest Browser: Starting with Quest Browser 5.0 and Opera 45, setting this property to false does nothing, as per spec discussion.Opera: Starting with Chrome 58 and Opera 45, setting this property to false does nothing, as per spec discussion.Opera Android: Starting with Chrome 58 and Opera 45, setting this property to false does nothing, as per spec discussion.Samsung Internet: Starting with Samsung Internet 7.0 and Opera 45, setting this property to false does nothing, as per spec discussion.WebView Android: Starting with Chrome 58 and Opera 45, setting this property to false does nothing, as per spec discussion. |
| api.Event.cancelable π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.Event.composed π | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | Firefox: Before Firefox 95, this property was incorrectly set to false on <select> and <input type='checkbox'> elements.Firefox for Android: Before Firefox for Android 95, this property was incorrectly set to false on <select> and <input type='checkbox'> elements.Node.js: This is not used in Node.js and is provided purely for completeness. |
| api.Event.composedPath π | Safari | 9/20/2016 | Firefox | 3/13/2018 | 539 | Node.js: Returns an array with either the event itself or empty.Node.js: This is not used in Node.js and is provided purely for completeness. |
| api.Event.currentTarget π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: On Internet Explorer 6 through 8, the event model is different. Event listeners are attached with the non-standard EventTarget.attachEvent method. In this model, there is no equivalent to event.currentTarget and this is the global object. One solution to emulate the event.currentTarget feature is to wrap your handler in a function calling the handler using Function.prototype.call with the element as a first argument. This way, this will be the expected value. |
| api.Event.defaultPrevented π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.Event.eventPhase π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.Event.initEvent π | Safari | 6/23/2003 | Firefox | 11/20/2012 | 3438 | Firefox: Before Firefox 17, a call to this method after the dispatching of the event raised an exception instead of doing nothing.Firefox for Android: Before Firefox for Android 17, a call to this method after the dispatching of the event raised an exception instead of doing nothing. |
| api.Event.isTrusted π | Firefox | 11/29/2005 | Safari | 9/20/2016 | 3948 | Chrome: Starting with Chrome 53 and Opera 40, untrusted events do not invoke the default action.Chrome Android: Starting with Chrome Android 53 and Opera 40, untrusted events do not invoke the default action.Internet Explorer: In Internet Explorer, all events are trusted except those that are created with the createEvent() method.Quest Browser: Starting with Quest Browser 5.0 and Opera 40, untrusted events do not invoke the default action.Opera: Starting with Chrome 53 and Opera 40, untrusted events do not invoke the default action.Opera Android: Starting with Chrome 53 and Opera 40, untrusted events do not invoke the default action.Samsung Internet: Starting with Samsung Internet 6.0 and Opera 40, untrusted events do not invoke the default action.WebView Android: Starting with version 53, untrusted events do not invoke the default action. |
| api.Event.preventDefault π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Event.returnValue π | Safari | 6/23/2003 | Firefox | 3/19/2019 | 5748 | |
| api.Event.srcElement π | Safari | 6/23/2003 | Firefox | 9/5/2018 | 5553 | |
| api.Event.stopImmediatePropagation π | Safari | 6/7/2010 | Firefox | 1/31/2012 | 603 | |
| api.Event.stopPropagation π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Node.js: This is not used in Node.js and is provided purely for completeness. |
| api.Event.target π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Event.timeStamp π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | Chrome: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Chrome Android: Starting with Chrome Android 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Deno: In Deno this represents the time since UNIX epoch, not since startup. This is considered a bug, see #10835.Firefox: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Firefox for Android: Starting with Chrome 49, Firefox for Android 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Internet Explorer: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Quest Browser: Starting with Quest Browser 5.0, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Opera: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Opera Android: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Samsung Internet: Starting with Samsung Internet 5.0, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.WebView Android: Starting with version 49, this property returns DOMHighResTimeStamp instead of DOMTimeStamp. |
| api.Event.type π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.EventSource π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.EventSource.EventSource π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.EventSource.EventSource.options_withCredentials_parameter | Firefox | 3/13/2012 | Safari | 10/22/2013 | 588 | |
| api.EventSource.close π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.EventSource.error_event π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.EventSource.message_event π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.EventSource.open_event π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.EventSource.readyState π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.EventSource.url π | Firefox | 8/16/2011 | Safari | 7/25/2012 | 344 | |
| api.EventSource.withCredentials π | Firefox | 8/16/2011 | Safari | 10/22/2013 | 798 | |
| api.EventSource.worker_support | Safari | 6/7/2010 | Firefox | 11/26/2024 | 5286 | Firefox: Not supported in service workers.Firefox for Android: Not supported in service workers. |
| api.EventTarget π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Node.js: Only available as an internal instance.Safari: window.EventTarget did not exist on versions of Safari before 10.1.Safari on iOS: window.EventTarget did not exist on versions of Safari iOS before 10.3.WebView on iOS: window.EventTarget did not exist on versions of Safari iOS before 10.3. |
| api.EventTarget.EventTarget π | Firefox | 3/13/2018 | Safari | 9/16/2020 | 918 | |
| api.EventTarget.addEventListener π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Before Chrome 49, the type and listener parameters were optional.Chrome Android: Before Chrome Android 49, the type and listener parameters were optional.Internet Explorer: Older versions of IE supported an equivalent, proprietary EventTarget.attachEvent() method.Quest Browser: Before Quest Browser 5.0, the type and listener parameters were optional.Samsung Internet: Before Samsung Internet 5.0, the type and listener parameters were optional.WebView Android: Before Chrome 49, the type and listener parameters were optional. |
| api.EventTarget.addEventListener.options_parameter | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.EventTarget.addEventListener.options_parameter.options_capture_parameter π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.EventTarget.addEventListener.options_parameter.options_once_parameter π | Safari | 9/20/2016 | Firefox | 11/15/2016 | 56 | |
| api.EventTarget.addEventListener.options_parameter.options_passive_parameter π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.EventTarget.addEventListener.options_parameter.options_passive_parameter_default_true_touch | Safari | 4/12/2018 | Firefox | 6/26/2018 | 75 | |
| api.EventTarget.addEventListener.options_parameter.options_signal_parameter π | Firefox | 2/23/2021 | Safari | 9/20/2021 | 209 | |
| api.EventTarget.addEventListener.useCapture_parameter_optional | Safari | 6/23/2003 | Firefox | 8/16/2011 | 2976 | |
| api.EventTarget.dispatchEvent π | Firefox | 10/24/2006 | Safari | 3/18/2008 | 511 | Internet Explorer: Older versions of IE supported an equivalent, proprietary EventTarget.fireEvent() method. |
| api.EventTarget.removeEventListener π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: Older versions of IE supported an equivalent, proprietary EventTarget.detachEvent() method. |
| api.EventTarget.removeEventListener.options_parameter | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.EventTarget.removeEventListener.useCapture_parameter_optional | Safari | 6/23/2003 | Firefox | 8/16/2011 | 2976 | |
| api.ExtendableEvent π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ExtendableEvent.ExtendableEvent π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ExtendableEvent.waitUntil π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ExtendableEvent.waitUntil.async_waitUntil | Firefox | 4/19/2017 | Safari | 4/12/2018 | 358 | |
| api.ExtendableMessageEvent π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ExtendableMessageEvent.ExtendableMessageEvent π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ExtendableMessageEvent.data π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ExtendableMessageEvent.lastEventId π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ExtendableMessageEvent.origin π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ExtendableMessageEvent.ports π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ExtendableMessageEvent.source π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.FetchEvent π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.FetchEvent.FetchEvent π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.FetchEvent.clientId π | Firefox | 3/8/2016 | Safari | 4/12/2018 | 765 | |
| api.FetchEvent.handled π | Firefox | 12/15/2020 | Safari | 9/12/2022 | 636 | |
| api.FetchEvent.preloadResponse π | Safari | 3/14/2022 | Firefox | 4/5/2022 | 22 | |
| api.FetchEvent.request π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.FetchEvent.respondWith π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.FetchEvent.resultingClientId π | Firefox | 1/29/2019 | Safari | 9/12/2022 | 1322 | |
| api.File π | Safari | 6/8/2009 | Firefox | 9/27/2011 | 841 | Firefox: Non-standard implementation.Firefox for Android: Non-standard implementation.Node.js: Before 23.0.0, File instance cannot be cloned.Node.js: Available as a part of the buffer module.Node.js: Available as a part of the buffer module. |
| api.File.File π | Firefox | 3/18/2014 | Safari | 3/27/2017 | 1105 | |
| api.File.lastModified π | Firefox | 8/28/2012 | Safari | 9/20/2016 | 1484 | |
| api.File.name π | Firefox | 1/21/2010 | Safari | 10/16/2014 | 1729 | |
| api.File.webkitRelativePath π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileList π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.FileList.item π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.FileList.length π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.FileReader π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | Firefox: Before Firefox 4, Blob parameters were File parameters. |
| api.FileReader.FileReader π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.abort π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.abort_event π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.error π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | Firefox: Before Firefox 13, the error property returned a FileError object.Firefox: From Firefox 13 to Firefox 58, the error property returned a DOMError object.Firefox: From Firefox 58, the error property returns a DOMException object.Firefox for Android: From Firefox 32 to Firefox 58, the error property returned a DOMError object.Firefox for Android: From Firefox 58, the error property returns a DOMException object.Internet Explorer: The error property returns a DOMError object.Safari: The error property returns a DOMError object.Safari on iOS: The error property returns a DOMError object.WebView on iOS: The error property returns a DOMError object. |
| api.FileReader.error_event π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.load_event π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.loadend_event π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.loadstart_event π | Safari | 7/25/2012 | Firefox | 7/28/2020 | 2925 | Firefox: loadstart event dispatches synchronously (should be asynchronously as per spec).Firefox for Android: loadstart event dispatches synchronously (should be asynchronously as per spec). |
| api.FileReader.progress_event π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.readAsArrayBuffer π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.readAsBinaryString π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.readAsDataURL π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | Firefox for Android: Using the camera in Android 8.x raises an exception. See bug 1511083. |
| api.FileReader.readAsText π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.readyState π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.result π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| api.FileReader.worker_support | Safari | 7/25/2012 | Firefox | 4/26/2016 | 1371 | |
| api.FileReaderSync π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.FileReaderSync.FileReaderSync π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.FileReaderSync.readAsArrayBuffer π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.FileReaderSync.readAsBinaryString π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.FileReaderSync.readAsDataURL π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.FileReaderSync.readAsText π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.FileReaderSync.worker_support | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.FileSystem π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | Edge: Before Edge 79, this API was only supported in drag-and-drop scenarios using the DataTransferItem.webkitGetAsEntry() method. It was not available for use in file or folder picker panels (such as when you use an <input> element with the HTMLInputElement.webkitdirectory attribute. |
| api.FileSystem.name π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystem.root π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemDirectoryEntry π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemDirectoryEntry.createReader π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemDirectoryEntry.getDirectory π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | Firefox: In Firefox, the errorCallback's input parameter is a DOMException rather than a FileError object.Firefox for Android: In Firefox for Android, the errorCallback's input parameter is a DOMException rather than a FileError object. |
| api.FileSystemDirectoryEntry.getFile π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | Firefox: In Firefox, the errorCallback's input parameter is a DOMException rather than a FileError object.Firefox for Android: In Firefox for Android, the errorCallback's input parameter is a DOMException rather than a FileError object. |
| api.FileSystemDirectoryHandle π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemDirectoryHandle.@@asyncIterator π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| api.FileSystemDirectoryHandle.entries π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemDirectoryHandle.getDirectoryHandle π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemDirectoryHandle.getFileHandle π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemDirectoryHandle.keys π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemDirectoryHandle.removeEntry π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemDirectoryHandle.resolve π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemDirectoryHandle.values π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemDirectoryReader π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemDirectoryReader.readEntries π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemEntry π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemEntry.filesystem π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemEntry.fullPath π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemEntry.getParent π | Firefox | 3/7/2017 | Safari | 4/12/2018 | 401 | |
| api.FileSystemEntry.isDirectory π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemEntry.isFile π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemEntry.name π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemFileEntry π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemFileEntry.file π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.FileSystemFileHandle π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemFileHandle.createSyncAccessHandle π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemFileHandle.getFile π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemHandle π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemHandle.isSameEntry π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemHandle.kind π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemHandle.move | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemHandle.name π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemSyncAccessHandle π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemSyncAccessHandle.close π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemSyncAccessHandle.close.sync_version | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| api.FileSystemSyncAccessHandle.flush π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemSyncAccessHandle.flush.sync_version | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| api.FileSystemSyncAccessHandle.getSize π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemSyncAccessHandle.getSize.sync_version | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| api.FileSystemSyncAccessHandle.read π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemSyncAccessHandle.truncate π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FileSystemSyncAccessHandle.truncate.sync_version | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| api.FileSystemSyncAccessHandle.write π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.FocusEvent π | Firefox | 9/17/2013 | Safari | 10/22/2013 | 35 | |
| api.FocusEvent.FocusEvent π | Firefox | 9/17/2013 | Safari | 10/22/2013 | 35 | |
| api.FocusEvent.relatedTarget π | Firefox | 9/17/2013 | Safari | 10/22/2013 | 35 | |
| api.FontFace π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.FontFace π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.display π | Firefox | 1/23/2018 | Safari | 4/12/2018 | 79 | |
| api.FontFace.family π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.featureSettings π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.load π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.loaded π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.status π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.stretch π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.style π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.unicodeRange π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFace.weight π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | Chrome: Chrome does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Chrome Android: Chrome Android does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Edge: Edge does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Quest Browser: Quest Browser does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Opera: Opera does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Opera Android: Opera Android does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Samsung Internet: Samsung Internet does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.WebView Android: WebView Android does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts. |
| api.FontFaceSet.@@iterator π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.add π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.check π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | Chrome: Prior to version 120, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Chrome Android: Prior to version 120, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Edge: Prior to version 120, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Quest Browser: Prior to version false, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Opera: Prior to version 106, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Opera Android: Prior to version 80, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Samsung Internet: Prior to version 25.0, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.WebView Android: Prior to version 120, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726. |
| api.FontFaceSet.clear π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.delete π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.entries | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.forEach | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.has | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.keys | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.load π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.loading_event π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.loadingdone_event π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.loadingerror_event π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.ready π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.size | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.status π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FontFaceSet.values | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| api.FormData π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 7, specifying a Blob as the data to append to the object, the filename reported in the Content-Disposition HTTP header was an empty string, resulting in errors on some servers. Starting with Firefox 7, the filename blob is sent.Firefox for Android: Before Firefox for Android 7, specifying a Blob as the data to append to the object, the filename reported in the Content-Disposition HTTP header was an empty string, resulting in errors on some servers. Starting with Firefox for Android 7, the filename blob is sent.WebView Android: XHR in Android 4.0 sends empty content for FormData with blob. |
| api.FormData.@@iterator | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.FormData.FormData π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.FormData.FormData.submitter | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| api.FormData.append π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 7, specifying a Blob as the data to append to the object, the filename reported in the Content-Disposition HTTP header was an empty string, resulting in errors on some servers. Starting with Firefox 7, the filename blob is sent.Firefox for Android: Before Firefox for Android 7, specifying a Blob as the data to append to the object, the filename reported in the Content-Disposition HTTP header was an empty string, resulting in errors on some servers. Starting with Firefox for Android 7, the filename blob is sent.Internet Explorer: With the "Include local directory pass when uploading files to a server" option enabled, IE will change the filename inside the Blob on the fly. To have direct control of the sent filename, the developer should send the filename as the third parameter value, i.e. formData.append(name, value, filename).WebView Android: XHR in Android 4.0 sends empty content for FormData with blob. |
| api.FormData.append.filename_parameter | Safari | 7/25/2012 | Firefox | 6/25/2013 | 335 | |
| api.FormData.delete π | Firefox | 7/2/2015 | Safari | 4/12/2018 | 1015 | |
| api.FormData.entries | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.FormData.forEach | Firefox | 6/7/2016 | Safari | 4/12/2018 | 674 | |
| api.FormData.get π | Firefox | 7/2/2015 | Safari | 4/12/2018 | 1015 | |
| api.FormData.getAll π | Firefox | 7/2/2015 | Safari | 4/12/2018 | 1015 | |
| api.FormData.has π | Firefox | 7/2/2015 | Safari | 4/12/2018 | 1015 | |
| api.FormData.keys | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.FormData.set π | Firefox | 7/2/2015 | Safari | 4/12/2018 | 1015 | |
| api.FormData.values | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.FormData.worker_support | Firefox | 7/2/2015 | Safari | 3/24/2020 | 1727 | |
| api.FormDataEvent π | Firefox | 1/7/2020 | Safari | 9/20/2021 | 622 | |
| api.FormDataEvent.FormDataEvent π | Firefox | 1/7/2020 | Safari | 9/20/2021 | 622 | |
| api.FormDataEvent.formData π | Firefox | 1/7/2020 | Safari | 9/20/2021 | 622 | |
| api.GainNode π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.GainNode.GainNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.GainNode.gain π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.Gamepad π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.Gamepad.axes π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.Gamepad.buttons π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.Gamepad.connected π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.Gamepad.id π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.Gamepad.index π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.Gamepad.mapping π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.Gamepad.timestamp π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.GamepadButton π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.GamepadButton.pressed π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.GamepadButton.value π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.GamepadEvent π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.GamepadEvent.GamepadEvent π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.GamepadEvent.gamepad π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.GamepadHapticActuator π | Firefox | 8/8/2017 | Safari | 3/27/2023 | 2057 | |
| api.GamepadHapticActuator.type | Firefox | 8/8/2017 | Safari | 3/27/2023 | 2057 | |
| api.Geolocation π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | Firefox: GPSD (GPS daemon) support added in Firefox 3.6. WiFi-based location is provided by Google (privacy) or a custom provider (MLS instructions). |
| api.Geolocation.clearWatch π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.Geolocation.getCurrentPosition π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.Geolocation.secure_context_required | Safari | 9/20/2016 | Firefox | 8/8/2017 | 322 | WebView Android: Secure context is only required for applications targeting Android Nougat (7) and higher. See bug 40465140. |
| api.Geolocation.watchPosition π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationCoordinates π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.GeolocationCoordinates.accuracy π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationCoordinates.altitude π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationCoordinates.altitudeAccuracy π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationCoordinates.heading π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationCoordinates.latitude π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationCoordinates.longitude π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationCoordinates.secure_context_required | Safari | 9/20/2016 | Firefox | 8/8/2017 | 322 | |
| api.GeolocationCoordinates.speed π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationCoordinates.toJSON π | Firefox | 8/6/2024 | Safari | 9/16/2024 | 41 | |
| api.GeolocationPosition π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.GeolocationPosition.coords π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationPosition.secure_context_required | Safari | 9/20/2016 | Firefox | 8/8/2017 | 322 | |
| api.GeolocationPosition.timestamp π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationPosition.toJSON π | Firefox | 8/6/2024 | Safari | 9/16/2024 | 41 | |
| api.GeolocationPositionError π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.GeolocationPositionError.code π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationPositionError.message π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.GeolocationPositionError.secure_context_required | Safari | 9/20/2016 | Firefox | 8/8/2017 | 322 | |
| api.HTMLAllCollection π | Safari | 6/7/2010 | Firefox | 9/2/2014 | 1548 | |
| api.HTMLAllCollection.item π | Safari | 6/7/2010 | Firefox | 9/2/2014 | 1548 | |
| api.HTMLAllCollection.length π | Safari | 6/7/2010 | Firefox | 9/2/2014 | 1548 | |
| api.HTMLAllCollection.namedItem π | Safari | 6/7/2010 | Firefox | 9/2/2014 | 1548 | |
| api.HTMLAnchorElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.charset π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.coords π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.download π | Firefox | 4/2/2013 | Safari | 3/27/2017 | 1455 | |
| api.HTMLAnchorElement.hash π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: From Firefox 29 to Firefox 40, the returned value was incorrectly percent-decoded.Firefox for Android: From Firefox for Android 29 to Firefox for Android 40, the returned value was incorrectly percent-decoded. |
| api.HTMLAnchorElement.host π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: In Internet Explorer 9, the host of an <a> always include the port (e.g. developer.mozilla.org:443), even if there is no explicit port in the href attribute value. |
| api.HTMLAnchorElement.hostname π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.href π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.hreflang π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.origin π | Safari | 7/20/2011 | Firefox | 12/10/2013 | 874 | Firefox: Before Firefox 49, results for URL using the blob scheme incorrectly returned null.Firefox for Android: Before Firefox for Android 49, results for URL using the blob scheme incorrectly returned null. |
| api.HTMLAnchorElement.password π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| api.HTMLAnchorElement.pathname π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.Firefox for Android: Before Firefox for Android 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed. |
| api.HTMLAnchorElement.ping π | Firefox | 11/9/2004 | Safari | 7/20/2011 | 2444 | Firefox: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104.Firefox for Android: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104. |
| api.HTMLAnchorElement.port π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.protocol π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.referrerPolicy π | Firefox | 11/15/2016 | Safari | 9/16/2020 | 1401 | |
| api.HTMLAnchorElement.rel π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.relList π | Firefox | 6/10/2014 | Safari | 9/30/2015 | 477 | |
| api.HTMLAnchorElement.rev π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.search π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.Firefox for Android: Before Firefox for Android 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed. |
| api.HTMLAnchorElement.shape π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.target π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.text π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.toString π | Safari | 10/26/2007 | Firefox | 6/25/2013 | 2069 | |
| api.HTMLAnchorElement.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAnchorElement.username π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| api.HTMLAreaElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.alt π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.coords π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.download π | Firefox | 4/2/2013 | Safari | 3/27/2017 | 1455 | |
| api.HTMLAreaElement.hash π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: From Firefox 29 to Firefox 40, the returned value was incorrectly percent-decoded.Firefox for Android: From Firefox for Android 29 to Firefox for Android 40, the returned value was incorrectly percent-decoded. |
| api.HTMLAreaElement.host π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: In Internet Explorer 9, the host of an <a> always include the port (e.g. developer.mozilla.org:443), even if there is no explicit port in the href attribute value. |
| api.HTMLAreaElement.hostname π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.href π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.noHref π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.origin π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | Firefox: Before Firefox 49, results for URL using the blob scheme incorrectly returned null.Firefox for Android: Before Firefox for Android 49, results for URL using the blob scheme incorrectly returned null. |
| api.HTMLAreaElement.password π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| api.HTMLAreaElement.pathname π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.Firefox for Android: Before Firefox for Android 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed. |
| api.HTMLAreaElement.ping π | Firefox | 11/9/2004 | Safari | 7/20/2011 | 2444 | Firefox: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104.Firefox for Android: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104. |
| api.HTMLAreaElement.port π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.protocol π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.referrerPolicy π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.HTMLAreaElement.rel π | Firefox | 6/10/2014 | Safari | 9/30/2015 | 477 | |
| api.HTMLAreaElement.relList π | Firefox | 6/10/2014 | Safari | 9/30/2015 | 477 | |
| api.HTMLAreaElement.search π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.Firefox for Android: Before Firefox for Android 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed. |
| api.HTMLAreaElement.shape π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.target π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLAreaElement.toString π | Firefox | 6/25/2013 | Safari | 3/27/2017 | 1371 | |
| api.HTMLAreaElement.username π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| api.HTMLAudioElement π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLAudioElement.Audio π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLBRElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBRElement.clear π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBaseElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBaseElement.href π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBaseElement.href.forbid_data_javascript_urls | Safari | 12/11/2023 | Firefox | 6/11/2024 | 183 | |
| api.HTMLBaseElement.href.forbid_special_characters | Safari | 9/12/2022 | Firefox | 7/9/2024 | 666 | |
| api.HTMLBaseElement.target π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBodyElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBodyElement.aLink π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBodyElement.background π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBodyElement.bgColor π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBodyElement.link π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBodyElement.text π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLBodyElement.vLink π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLButtonElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLButtonElement.checkValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLButtonElement.disabled π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLButtonElement.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLButtonElement.formAction π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Firefox: In Firefox 56, the implementation has been updated so that the formAction property returns the correct form submission URL, as per spec, when the associated button is being used to submit a form (bug 1366361).Firefox for Android: In Firefox for Android 56, the implementation has been updated so that the formAction property returns the correct form submission URL, as per spec, when the associated button is being used to submit a form (bug 1366361). |
| api.HTMLButtonElement.formEnctype π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLButtonElement.formMethod π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLButtonElement.formNoValidate π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLButtonElement.formTarget π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLButtonElement.labels π | Safari | 7/20/2011 | Firefox | 9/28/2017 | 2262 | |
| api.HTMLButtonElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLButtonElement.popoverTargetAction π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLButtonElement.popoverTargetElement π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLButtonElement.reportValidity π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLButtonElement.setCustomValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670. |
| api.HTMLButtonElement.type π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLButtonElement.validationMessage π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLButtonElement.validity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLButtonElement.value π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLButtonElement.willValidate π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.HTMLCanvasElement π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.HTMLCanvasElement.captureStream π | Firefox | 12/15/2015 | Safari | 9/19/2017 | 644 | |
| api.HTMLCanvasElement.getContext π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.HTMLCanvasElement.getContext.2d_context | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | |
| api.HTMLCanvasElement.getContext.2d_context.options_willReadFrequently_parameter π | Firefox | 3/18/2014 | Safari | 9/16/2024 | 3835 | |
| api.HTMLCanvasElement.getContext.bitmaprenderer_context | Firefox | 4/26/2016 | Safari | 4/12/2018 | 716 | |
| api.HTMLCanvasElement.getContext.webgl2_context | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.HTMLCanvasElement.getContext.webgl2_context.options_alpha_parameter π | Firefox | 6/10/2014 | Safari | 9/20/2021 | 2659 | |
| api.HTMLCanvasElement.getContext.webgl2_context.options_failIfMajorPerformanceCaveat_parameter π | Firefox | 9/22/2015 | Safari | 9/20/2021 | 2190 | |
| api.HTMLCanvasElement.getContext.webgl2_context.options_powerPreference_parameter π | Firefox | 10/23/2018 | Safari | 9/20/2021 | 1063 | Firefox: Firefox respects the GPU hint on macOS only. |
| api.HTMLCanvasElement.getContext.webgl_context | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | |
| api.HTMLCanvasElement.getContext.webgl_context.options_alpha_parameter π | Firefox | 6/10/2014 | Safari | 3/27/2017 | 1021 | |
| api.HTMLCanvasElement.getContext.webgl_context.options_failIfMajorPerformanceCaveat_parameter π | Firefox | 9/22/2015 | Safari | 3/27/2017 | 552 | |
| api.HTMLCanvasElement.getContext.webgl_context.options_powerPreference_parameter π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | Firefox: Firefox respects the GPU hint on macOS only. |
| api.HTMLCanvasElement.height π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.HTMLCanvasElement.toBlob π | Firefox | 1/8/2013 | Safari | 9/19/2017 | 1715 | |
| api.HTMLCanvasElement.toBlob.quality_parameter | Firefox | 10/29/2013 | Safari | 9/19/2017 | 1421 | |
| api.HTMLCanvasElement.toBlob.type_parameter_jpeg | Firefox | 1/8/2013 | Safari | 9/19/2017 | 1715 | |
| api.HTMLCanvasElement.toBlob.type_parameter_png | Firefox | 1/8/2013 | Safari | 9/19/2017 | 1715 | |
| api.HTMLCanvasElement.toDataURL π | Firefox | 10/24/2006 | Safari | 6/8/2009 | 958 | |
| api.HTMLCanvasElement.toDataURL.type_parameter_jpeg | Firefox | 1/8/2013 | Safari | 9/19/2017 | 1715 | |
| api.HTMLCanvasElement.toDataURL.type_parameter_png | Firefox | 1/8/2013 | Safari | 9/19/2017 | 1715 | |
| api.HTMLCanvasElement.transferControlToOffscreen π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.HTMLCanvasElement.webglcontextcreationerror_event π | Safari | 7/20/2011 | Firefox | 9/20/2016 | 1889 | |
| api.HTMLCanvasElement.webglcontextlost_event π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLCanvasElement.webglcontextrestored_event π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLCanvasElement.width π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.HTMLCollection π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLCollection.item π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLCollection.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLCollection.namedItem π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLDListElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLDListElement.compact π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLDataElement π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| api.HTMLDataElement.value π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| api.HTMLDataListElement π | Firefox | 3/22/2011 | Safari | 3/25/2019 | 2925 | |
| api.HTMLDataListElement.options π | Firefox | 3/22/2011 | Safari | 3/25/2019 | 2925 | |
| api.HTMLDetailsElement π | Safari | 7/25/2012 | Firefox | 9/20/2016 | 1518 | |
| api.HTMLDetailsElement.name π | Safari | 12/11/2023 | Firefox | 9/3/2024 | 267 | |
| api.HTMLDetailsElement.open π | Safari | 7/25/2012 | Firefox | 9/20/2016 | 1518 | |
| api.HTMLDialogElement π | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| api.HTMLDialogElement.cancel_event π | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| api.HTMLDialogElement.close π | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| api.HTMLDialogElement.close_event π | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| api.HTMLDialogElement.open π | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| api.HTMLDialogElement.returnValue π | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| api.HTMLDialogElement.show π | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| api.HTMLDialogElement.showModal π | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| api.HTMLDirectoryElement | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLDirectoryElement.compact π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLDivElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLDivElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLDocument π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLElement.accessKey π | Firefox | 6/21/2011 | Safari | 7/25/2012 | 400 | |
| api.HTMLElement.accessKeyLabel π | Firefox | 11/8/2011 | Safari | 9/16/2020 | 3235 | |
| api.HTMLElement.attachInternals π | Firefox | 10/5/2021 | Safari | 3/27/2023 | 538 | |
| api.HTMLElement.autofocus π | Safari | 3/14/2022 | Firefox | 2/14/2023 | 337 | Chrome: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Chrome Android: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Edge: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Firefox: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Firefox for Android: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Internet Explorer: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Quest Browser: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Opera: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Opera Android: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Safari: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Safari on iOS: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Samsung Internet: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.WebView Android: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.WebView on iOS: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement. |
| api.HTMLElement.beforetoggle_event π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLElement.beforetoggle_event.popover_elements π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLElement.blur π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.HTMLElement.change_event π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.click π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | Chrome: Before Chrome 19, click() is only defined on buttons and inputs.Chrome Android: Before Chrome Android 25, click() is only defined on buttons and inputs.Firefox: Before Firefox 5, click() is only defined on buttons and inputs, and has no effect on text and file inputs.Firefox: Starting in Firefox 75, the click() function works even when the element is not attached to a DOM tree.Firefox for Android: Before Firefox 5, click() is only defined on buttons and inputs, and has no effect on text and file inputs.Firefox for Android: Starting in Firefox for Android 79, the click() function works even when the element is not attached to a DOM tree.Quest Browser: Before Quest Browser 5.0, click() is only defined on buttons and inputs.Samsung Internet: Before Samsung Internet 1.5, click() is only defined on buttons and inputs.WebView Android: Before WebView Android 4.4, click() is only defined on buttons and inputs. |
| api.HTMLElement.contentEditable π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.HTMLElement.dataset π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.HTMLElement.dir π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.drag_event π | Safari | 3/18/2008 | Firefox | 12/20/2011 | 1372 | |
| api.HTMLElement.dragend_event π | Safari | 3/18/2008 | Firefox | 12/20/2011 | 1372 | |
| api.HTMLElement.dragenter_event π | Safari | 3/18/2008 | Firefox | 12/20/2011 | 1372 | |
| api.HTMLElement.dragexit_event | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLElement.draggable π | Firefox | 10/24/2006 | Safari | 6/7/2010 | 1322 | |
| api.HTMLElement.dragleave_event π | Safari | 3/18/2008 | Firefox | 12/20/2011 | 1372 | |
| api.HTMLElement.dragover_event π | Safari | 3/18/2008 | Firefox | 12/20/2011 | 1372 | |
| api.HTMLElement.dragstart_event π | Safari | 3/18/2008 | Firefox | 12/20/2011 | 1372 | |
| api.HTMLElement.drop_event π | Safari | 3/18/2008 | Firefox | 12/20/2011 | 1372 | |
| api.HTMLElement.enterKeyHint π | Safari | 3/24/2020 | Firefox | 11/2/2021 | 588 | |
| api.HTMLElement.error_event π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLElement.focus π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If there's no hardware keyboard connected and the user has not yet interacted with the page, then calling focus() on an <input> element has no effect (for example, the element does not match the :focus selector).WebView on iOS: If there's no hardware keyboard connected and the user has not yet interacted with the page, then calling focus() on an <input> element has no effect (for example, the element does not match the :focus selector). |
| api.HTMLElement.focus.options_preventScroll_parameter | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| api.HTMLElement.hidden π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLElement.hidePopover π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLElement.inert π | Safari | 5/16/2022 | Firefox | 4/11/2023 | 330 | |
| api.HTMLElement.innerText π | Safari | 6/23/2003 | Firefox | 3/8/2016 | 4642 | |
| api.HTMLElement.inputMode π | Safari | 3/25/2019 | Firefox | 12/7/2021 | 988 | |
| api.HTMLElement.isContentEditable π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.HTMLElement.lang π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.nonce π | Firefox | 4/7/2020 | Safari | 3/14/2022 | 706 | Safari: The property is defined only for its useful elements: <link>, <script>, and <style>; it is undefined for all other elements.Safari on iOS: The property is defined only for its useful elements: <link>, <script>, and <style>; it is undefined for all other elements.WebView on iOS: The property is defined only for its useful elements: <link>, <script>, and <style>; it is undefined for all other elements. |
| api.HTMLElement.offsetHeight π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.offsetLeft π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.offsetParent π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.offsetTop π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.offsetWidth π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.outerText π | Safari | 4/15/2005 | Firefox | 3/8/2022 | 6171 | |
| api.HTMLElement.popover π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | Safari on iOS: On iOS and iPadOS, popovers are not dismissed when the user taps outside of the popover area, see bug 267688.WebView on iOS: On iOS and iPadOS, popovers are not dismissed when the user taps outside of the popover area, see bug 267688. |
| api.HTMLElement.showPopover π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLElement.spellcheck π | Firefox | 10/24/2006 | Safari | 7/20/2011 | 1730 | |
| api.HTMLElement.style π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.tabIndex π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | Edge: Returns incorrect value for elements without an explicit tabindex attribute. See issue 4365703 for details.Internet Explorer: Returns incorrect value for elements without an explicit tabindex attribute. See issue 4365703 for details. |
| api.HTMLElement.title π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLElement.togglePopover π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLElement.togglePopover.returns_boolean | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLElement.toggle_event π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLElement.toggle_event.details_elements π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLElement.toggle_event.popover_elements π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLElement.translate π | Safari | 7/25/2012 | Firefox | 3/14/2023 | 3884 | |
| api.HTMLEmbedElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Chrome: Starting with Chrome 58, this interface can no longer be called as a function.Chrome Android: Starting with Chrome Android 58, this interface can no longer be called as a function.Quest Browser: Starting with Quest Browser 5.0, this interface can no longer be called as a function.Opera: Starting with Opera 45, this interface can no longer be called as a function.Opera Android: Starting with Opera 45, this interface can no longer be called as a function.Samsung Internet: Starting with Samsung Internet 7.0, this interface can no longer be called as a function.WebView Android: Starting with WebView Android 58, this interface can no longer be called as a function. |
| api.HTMLEmbedElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLEmbedElement.getSVGDocument π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.HTMLEmbedElement.height π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLEmbedElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLEmbedElement.src π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLEmbedElement.type π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLEmbedElement.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFieldSetElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFieldSetElement.checkValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLFieldSetElement.disabled π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.HTMLFieldSetElement.elements π | Firefox | 3/22/2011 | Safari | 10/22/2013 | 945 | |
| api.HTMLFieldSetElement.elements.type_HTMLCollection | Firefox | 3/22/2011 | Safari | 9/19/2019 | 3103 | |
| api.HTMLFieldSetElement.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFieldSetElement.name π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.HTMLFieldSetElement.reportValidity π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLFieldSetElement.setCustomValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670. |
| api.HTMLFieldSetElement.type π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.HTMLFieldSetElement.validationMessage π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLFieldSetElement.validity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLFieldSetElement.willValidate π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.HTMLFontElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFontElement.color π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFontElement.face π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFontElement.size π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormControlsCollection π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormControlsCollection.namedItem π | Safari | 10/26/2007 | Firefox | 10/14/2014 | 2545 | Firefox: Returned a NodeList instead of a RadioNodeList.Firefox for Android: Returned a NodeList instead of a RadioNodeList. |
| api.HTMLFormElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.acceptCharset π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.action π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.autocomplete π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.HTMLFormElement.checkValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLFormElement.elements π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.encoding π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.enctype π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.formdata_event π | Firefox | 1/7/2020 | Safari | 9/20/2021 | 622 | |
| api.HTMLFormElement.length π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.method π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.noValidate π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLFormElement.rel π | Safari | 3/14/2022 | Firefox | 3/14/2023 | 365 | |
| api.HTMLFormElement.relList π | Safari | 3/14/2022 | Firefox | 3/14/2023 | 365 | |
| api.HTMLFormElement.reportValidity π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLFormElement.requestSubmit π | Firefox | 4/7/2020 | Safari | 9/12/2022 | 888 | |
| api.HTMLFormElement.reset π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.reset_event π | Safari | 10/26/2007 | Firefox | 8/16/2011 | 1390 | |
| api.HTMLFormElement.submit π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.submit_event π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFormElement.target π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.contentDocument π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.contentWindow π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.frameBorder π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.longDesc π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.marginHeight π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.marginWidth π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.noResize π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.scrolling π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameElement.src π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameSetElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameSetElement.cols π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLFrameSetElement.rows π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLHRElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLHRElement.align π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLHRElement.color π | Firefox | 11/9/2004 | Safari | 3/27/2017 | 4521 | |
| api.HTMLHRElement.noShade π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLHRElement.size π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLHRElement.width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLHeadElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLHeadingElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLHeadingElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLHtmlElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLHtmlElement.version π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLIFrameElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.allow π | Safari | 4/12/2018 | Firefox | 3/10/2020 | 698 | |
| api.HTMLIFrameElement.allowFullscreen π | Firefox | 6/25/2013 | Safari | 3/27/2017 | 1371 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.WebView on iOS: Only available on iPad, not on iPhone.WebView on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games. |
| api.HTMLIFrameElement.contentDocument π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.contentWindow π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.frameBorder π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.getSVGDocument π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLIFrameElement.height π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.loading π | Safari | 3/27/2023 | Firefox | 12/19/2023 | 267 | |
| api.HTMLIFrameElement.longDesc π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.marginHeight π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.marginWidth π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.referrerPolicy π | Firefox | 11/15/2016 | Safari | 9/16/2020 | 1401 | |
| api.HTMLIFrameElement.sandbox π | Safari | 6/7/2010 | Firefox | 11/20/2012 | 897 | Chrome: Before Chrome 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Chrome Android: Before Chrome Android 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Firefox: Previously, the type of sandbox was a DOMString instead of a DOMSettableTokenList. This has been fixed with Firefox 29. Other browsers may still implement the property as DOMString since it was a late change in the specification.Firefox for Android: Previously, the type of sandbox was a DOMString instead of a DOMSettableTokenList. This has been fixed with Firefox for Android 29. Other browsers may still implement the property as DOMString since it was a late change in the specification.Quest Browser: Before Quest Browser 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera: Before Opera 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera Android: Before Opera Android 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Samsung Internet: Before Samsung Internet 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.WebView Android: Before WebView 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList. |
| api.HTMLIFrameElement.scrolling π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.src π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLIFrameElement.srcdoc π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.HTMLIFrameElement.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLImageElement.Image π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLImageElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.alt π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.border π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.complete π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Internet Explorer: IE reports false for broken images. |
| api.HTMLImageElement.crossOrigin π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.HTMLImageElement.currentSrc π | Firefox | 5/12/2015 | Safari | 3/21/2016 | 314 | |
| api.HTMLImageElement.decode π | Safari | 4/12/2018 | Firefox | 7/9/2019 | 453 | |
| api.HTMLImageElement.decoding π | Safari | 4/12/2018 | Firefox | 10/23/2018 | 194 | |
| api.HTMLImageElement.fetchPriority π | Safari | 12/11/2023 | Firefox | 10/29/2024 | 323 | |
| api.HTMLImageElement.height π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.hspace π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.isMap π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.loading π | Firefox | 4/7/2020 | Safari | 3/14/2022 | 706 | |
| api.HTMLImageElement.longDesc π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.lowsrc π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.naturalHeight π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.naturalWidth π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.referrerPolicy π | Firefox | 11/15/2016 | Safari | 9/16/2020 | 1401 | |
| api.HTMLImageElement.sizes π | Firefox | 5/12/2015 | Safari | 3/21/2016 | 314 | |
| api.HTMLImageElement.src π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.srcset π | Safari | 10/16/2014 | Firefox | 5/12/2015 | 208 | |
| api.HTMLImageElement.useMap π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.vspace π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLImageElement.x π | Safari | 10/26/2007 | Firefox | 7/17/2012 | 1726 | |
| api.HTMLImageElement.y π | Safari | 10/26/2007 | Firefox | 7/17/2012 | 1726 | |
| api.HTMLInputElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.accept π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.align π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.alt π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.autocomplete π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.HTMLInputElement.cancel_event π | Firefox | 8/10/2021 | Safari | 3/27/2023 | 594 | |
| api.HTMLInputElement.checkValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.checked π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.defaultChecked π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.defaultValue π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.dirName π | Safari | 7/25/2012 | Firefox | 8/1/2023 | 4024 | |
| api.HTMLInputElement.disabled π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.files π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | Internet Explorer: This property is read-only. |
| api.HTMLInputElement.form π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.formAction π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.formEnctype π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.formMethod π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.formNoValidate π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.formTarget π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.height π | Firefox | 10/9/2012 | Safari | 10/22/2013 | 378 | |
| api.HTMLInputElement.indeterminate π | Safari | 10/26/2007 | Firefox | 1/21/2010 | 818 | |
| api.HTMLInputElement.invalid_event π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.labels π | Safari | 6/7/2010 | Firefox | 9/28/2017 | 2670 | |
| api.HTMLInputElement.list π | Firefox | 3/22/2011 | Safari | 3/25/2019 | 2925 | |
| api.HTMLInputElement.max π | Safari | 6/7/2010 | Firefox | 10/9/2012 | 855 | |
| api.HTMLInputElement.maxLength π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.min π | Safari | 6/7/2010 | Firefox | 10/9/2012 | 855 | |
| api.HTMLInputElement.minLength π | Firefox | 1/24/2017 | Safari | 3/27/2017 | 62 | |
| api.HTMLInputElement.multiple π | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| api.HTMLInputElement.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.pattern π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.placeholder π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.HTMLInputElement.popoverTargetAction π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLInputElement.popoverTargetElement π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| api.HTMLInputElement.readOnly π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.reportValidity π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLInputElement.required π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.select π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.select_event π | Safari | 6/23/2003 | Firefox | 8/16/2011 | 2976 | |
| api.HTMLInputElement.selectionDirection π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.HTMLInputElement.selectionEnd π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.HTMLInputElement.selectionStart π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.HTMLInputElement.setCustomValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670. |
| api.HTMLInputElement.setRangeText π | Safari | 10/22/2013 | Firefox | 2/4/2014 | 105 | |
| api.HTMLInputElement.setSelectionRange π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLInputElement.showPicker π | Firefox | 5/31/2022 | Safari | 9/12/2022 | 104 | |
| api.HTMLInputElement.showPicker.color_input | Firefox | 5/31/2022 | Safari | 9/12/2022 | 104 | |
| api.HTMLInputElement.showPicker.date_input | Firefox | 5/31/2022 | Safari | 3/5/2024 | 644 | |
| api.HTMLInputElement.showPicker.datetime_local_input | Firefox | 5/31/2022 | Safari | 3/5/2024 | 644 | |
| api.HTMLInputElement.showPicker.file_input | Firefox | 5/31/2022 | Safari | 9/12/2022 | 104 | |
| api.HTMLInputElement.size π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.src π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.step π | Safari | 6/7/2010 | Firefox | 10/9/2012 | 855 | |
| api.HTMLInputElement.stepDown π | Safari | 6/7/2010 | Firefox | 10/9/2012 | 855 | Firefox: Does not have a specific UI. There are still differences with the latest spec; see bug 835773.Firefox for Android: Does not have a specific UI. There are still differences with the latest spec; see bug 835773. |
| api.HTMLInputElement.stepUp π | Safari | 6/7/2010 | Firefox | 10/9/2012 | 855 | Firefox: Does not have a specific UI. There are still differences with the latest spec; see bug 835773.Firefox for Android: Does not have a specific UI. There are still differences with the latest spec; see bug 835773. |
| api.HTMLInputElement.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.useMap π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.validationMessage π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.validity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLInputElement.value π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLInputElement.valueAsDate π | Safari | 6/7/2010 | Firefox | 11/14/2017 | 2717 | |
| api.HTMLInputElement.valueAsNumber π | Safari | 6/7/2010 | Firefox | 10/9/2012 | 855 | |
| api.HTMLInputElement.webkitEntries π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.HTMLInputElement.webkitdirectory π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | Chrome Android: In Chrome for Android 131, if a user selects a directory, the browser crashes (see bug 376834374).Chrome Android: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.Quest Browser: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.Opera Android: In Chrome for Android 131, if a user selects a directory, the browser crashes (see bug 376834374).Opera Android: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.Safari on iOS: The property can be set, but has no effect.Samsung Internet: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.WebView Android: In Chrome for Android 131, if a user selects a directory, the browser crashes (see bug 376834374).WebView Android: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.WebView on iOS: The property can be set, but has no effect. |
| api.HTMLInputElement.width π | Firefox | 10/9/2012 | Safari | 10/22/2013 | 378 | |
| api.HTMLInputElement.willValidate π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.HTMLLIElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 10, Gecko incorrectly reflected negative value attributes to 0.Firefox for Android: Before Firefox for Android 10, Gecko incorrectly reflected negative value attributes to 0. |
| api.HTMLLIElement.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLIElement.value π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLabelElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLLabelElement.control π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLLabelElement.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLLabelElement.htmlFor π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLLegendElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLegendElement.align π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLegendElement.form π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement.as π | Safari | 9/20/2016 | Firefox | 9/28/2017 | 373 | |
| api.HTMLLinkElement.charset π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement.crossOrigin π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| api.HTMLLinkElement.disabled π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Chrome Android: In Chrome Android and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Edge: Since Edge 79, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Quest Browser: In Quest Browser and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Opera: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Opera Android: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Samsung Internet: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.WebView Android: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets. |
| api.HTMLLinkElement.fetchPriority π | Safari | 12/11/2023 | Firefox | 10/29/2024 | 323 | |
| api.HTMLLinkElement.href π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement.hreflang π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement.imageSizes π | Firefox | 6/30/2020 | Safari | 12/11/2023 | 1259 | |
| api.HTMLLinkElement.imageSrcset π | Firefox | 6/30/2020 | Safari | 12/11/2023 | 1259 | |
| api.HTMLLinkElement.integrity π | Firefox | 12/15/2015 | Safari | 4/12/2018 | 849 | |
| api.HTMLLinkElement.media π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement.referrerPolicy π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.HTMLLinkElement.rel π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement.relList π | Firefox | 6/10/2014 | Safari | 9/30/2015 | 477 | |
| api.HTMLLinkElement.rev π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement.sheet π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement.sizes π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | Chrome: Before Chrome 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Chrome Android: Before Chrome Android 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Quest Browser: Before Quest Browser 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera: Before Opera 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera Android: Before Opera Android 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Samsung Internet: Before Samsung Internet 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.WebView Android: Before WebView 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList. |
| api.HTMLLinkElement.target π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLLinkElement.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLMapElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLMapElement.areas π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLMapElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLMarqueeElement π | Safari | 2/2/2004 | Firefox | 1/29/2019 | 5475 | Firefox: Before Firefox 65, <marquee> implemented the HTMLDivElement interface.Firefox for Android: Before Firefox for Android 65, <marquee> implemented the HTMLDivElement interface. |
| api.HTMLMarqueeElement.behavior π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.bgColor π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.direction π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.height π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.hspace π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.loop π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.scrollAmount π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.scrollDelay π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.start π | Safari | 2/2/2004 | Firefox | 1/29/2019 | 5475 | |
| api.HTMLMarqueeElement.stop π | Safari | 2/2/2004 | Firefox | 1/29/2019 | 5475 | |
| api.HTMLMarqueeElement.trueSpeed π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.vspace π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMarqueeElement.width π | Safari | 7/20/2011 | Firefox | 1/29/2019 | 2750 | |
| api.HTMLMediaElement π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.abort_event π | Safari | 3/18/2008 | Firefox | 12/20/2011 | 1372 | |
| api.HTMLMediaElement.addTextTrack π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.HTMLMediaElement.audioTracks π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.HTMLMediaElement.autoplay π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.buffered π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| api.HTMLMediaElement.canPlayType π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Chrome: codecs string can contain any subset of optional parameters (should be all or none).Chrome: Errors if codecs string contains unexpected characters (should evaluate string up to character).Chrome Android: codecs string can contain any subset of optional parameters (should be all or none).Chrome Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Edge: codecs string can contain any subset of optional parameters (should be all or none).Edge: Errors if codecs string contains unexpected characters (should evaluate string up to character).Firefox: Before Firefox 28, canPlayType() returned probably when asked about WebM audio or video files without the codecs parameter. Since multiple codecs are supported, this is not enough information to determine if a file can be played, so maybe is now correctly returned.Firefox: Before Firefox 101, canPlayType() ignored codecs parameter options for av01 codecs (treating them as av1).Firefox for Android: Before Firefox for Android 28, canPlayType() returned probably when asked about WebM audio or video files without the codecs parameter. Since multiple codecs are supported, this is not enough information to determine if a file can be played, so maybe is now correctly returned.Firefox for Android: Before Firefox for Android 101, canPlayType() ignored codecs parameter options for av01 codecs (treating them as av1).Quest Browser: codecs string can contain any subset of optional parameters (should be all or none).Quest Browser: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera: codecs string can contain any subset of optional parameters (should be all or none).Opera: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera Android: codecs string can contain any subset of optional parameters (should be all or none).Opera Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Samsung Internet: codecs string can contain any subset of optional parameters (should be all or none).Samsung Internet: Errors if codecs string contains unexpected characters (should evaluate string up to character).WebView Android: codecs string can contain any subset of optional parameters (should be all or none).WebView Android: Errors if codecs string contains unexpected characters (should evaluate string up to character). |
| api.HTMLMediaElement.canplay_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.canplaythrough_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.controls π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.crossOrigin π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| api.HTMLMediaElement.currentSrc π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.currentTime π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.defaultMuted π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| api.HTMLMediaElement.defaultPlaybackRate π | Safari | 3/18/2008 | Firefox | 4/2/2013 | 1841 | |
| api.HTMLMediaElement.duration π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.durationchange_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.emptied_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.encrypted_event π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.HTMLMediaElement.ended π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.ended_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.error π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.error_event π | Safari | 3/18/2008 | Firefox | 8/16/2011 | 1246 | |
| api.HTMLMediaElement.fastSeek π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.HTMLMediaElement.load π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.loadeddata_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.loadedmetadata_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.loadstart_event π | Safari | 6/8/2009 | Firefox | 8/16/2011 | 799 | |
| api.HTMLMediaElement.loop π | Safari | 6/8/2009 | Firefox | 3/13/2012 | 1009 | |
| api.HTMLMediaElement.mediaKeys π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.HTMLMediaElement.muted π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.networkState π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Firefox: The NETWORK_LOADED state was removed to align with the HTML spec in Firefox 4. |
| api.HTMLMediaElement.pause π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.pause_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.paused π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.play π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.play.returns_promise | Safari | 9/20/2016 | Firefox | 4/19/2017 | 211 | |
| api.HTMLMediaElement.play_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.playbackRate π | Safari | 3/18/2008 | Firefox | 4/2/2013 | 1841 | Chrome: Setting the playbackRate to a negative value will throw an error.Chrome Android: Setting the playbackRate to a negative value will throw an error.Edge: Setting the playbackRate to a negative value will throw an error.Firefox: Setting the playbackRate to a negative value will throw an error.Firefox for Android: Setting the playbackRate to a negative value will throw an error.Quest Browser: Setting the playbackRate to a negative value will throw an error.Opera: Setting the playbackRate to a negative value will throw an error.Opera Android: Setting the playbackRate to a negative value will throw an error.Samsung Internet: Setting the playbackRate to a negative value will throw an error.WebView Android: Setting the playbackRate to a negative value will throw an error. |
| api.HTMLMediaElement.played π | Safari | 3/18/2008 | Firefox | 8/28/2012 | 1624 | |
| api.HTMLMediaElement.playing_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.preload π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLMediaElement.preservesPitch π | Firefox | 5/31/2022 | Safari | 12/11/2023 | 559 | |
| api.HTMLMediaElement.progress_event π | Safari | 3/18/2008 | Firefox | 8/16/2011 | 1246 | |
| api.HTMLMediaElement.ratechange_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.readyState π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.seekable π | Safari | 3/18/2008 | Firefox | 11/8/2011 | 1330 | |
| api.HTMLMediaElement.seeked_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.seeking π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.seeking_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.setMediaKeys π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.HTMLMediaElement.src π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.srcObject π | Firefox | 11/3/2015 | Safari | 9/19/2017 | 686 | Chrome: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Chrome: Support added for MediaStream objects (see bug 41186131).Chrome Android: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Chrome Android: Support added for MediaStream objects (see bug 41186131).Edge: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Edge: Support added for MediaStream objects (see bug 41186131).Firefox: Only supports MediaStream objects (see bug 886194).Firefox for Android: Only supports MediaStream objects (see bug 886194).Quest Browser: Support added for MediaStream objects (see bug 41186131).Opera: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Opera: Support added for MediaStream objects (see bug 41186131).Opera Android: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Opera Android: Support added for MediaStream objects (see bug 41186131).Samsung Internet: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Samsung Internet: Support added for MediaStream objects (see bug 41186131).WebView Android: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).WebView Android: Support added for MediaStream objects (see bug 41186131). |
| api.HTMLMediaElement.stalled_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.suspend_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.textTracks π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.HTMLMediaElement.timeupdate_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLMediaElement.videoTracks π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.HTMLMediaElement.volume π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Safari on iOS: volume returns a value and is writable; however, the value is always 1, and setting a value has no effect on the volume of the media object.WebView on iOS: volume returns a value and is writable; however, the value is always 1, and setting a value has no effect on the volume of the media object. |
| api.HTMLMediaElement.volumechange_event π | Safari | 3/18/2008 | Firefox | 8/16/2011 | 1246 | |
| api.HTMLMediaElement.waiting_event π | Safari | 3/18/2008 | Firefox | 8/16/2011 | 1246 | |
| api.HTMLMediaElement.waitingforkey_event π | Safari | 3/25/2019 | Firefox | 11/26/2024 | 2073 | Firefox: The onwaitingforkey event handler property is not supported.Firefox for Android: The onwaitingforkey event handler property is not supported. |
| api.HTMLMenuElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLMenuElement.compact π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLMetaElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLMetaElement.content π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLMetaElement.httpEquiv π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLMetaElement.media π | Safari | 9/20/2021 | Firefox | 10/18/2022 | 393 | |
| api.HTMLMetaElement.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLMetaElement.scheme π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLMeterElement π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| api.HTMLMeterElement.high π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| api.HTMLMeterElement.labels π | Safari | 7/25/2012 | Firefox | 9/28/2017 | 1891 | |
| api.HTMLMeterElement.low π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| api.HTMLMeterElement.max π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| api.HTMLMeterElement.min π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| api.HTMLMeterElement.optimum π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| api.HTMLMeterElement.value π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| api.HTMLModElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLModElement.cite π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLModElement.dateTime π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOListElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOListElement.compact π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOListElement.reversed π | Safari | 7/25/2012 | Firefox | 1/8/2013 | 167 | |
| api.HTMLOListElement.start π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOListElement.type π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.archive π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.border π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.checkValidity π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLObjectElement.code π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.codeBase π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.codeType π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.contentDocument π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.contentWindow π | Firefox | 6/25/2013 | Safari | 9/19/2019 | 2277 | |
| api.HTMLObjectElement.data π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.declare π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.getSVGDocument π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| api.HTMLObjectElement.height π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.hspace π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.reportValidity π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLObjectElement.setCustomValidity π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670. |
| api.HTMLObjectElement.standby π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.type π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.useMap π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.validationMessage π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLObjectElement.validity π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLObjectElement.vspace π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLObjectElement.willValidate π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLOptGroupElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptGroupElement.disabled π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptGroupElement.label π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionElement π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| api.HTMLOptionElement.Option π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Internet Explorer: Before Internet Explorer 9, the outerHTML of elements lose their text when constructing with new Option(). |
| api.HTMLOptionElement.defaultSelected π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionElement.disabled π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionElement.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionElement.index π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionElement.label π | Safari | 10/26/2007 | Firefox | 9/27/2011 | 1432 | Firefox: Before Firefox 7 the label property incorrectly returned an empty string if not defined instead of returning the element's text content.Firefox for Android: Before Firefox for Android 7 the label property incorrectly returned an empty string if not defined instead of returning the element's text content. |
| api.HTMLOptionElement.selected π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionElement.text π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionElement.value π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionsCollection π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionsCollection.add π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionsCollection.length π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOptionsCollection.remove π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| api.HTMLOptionsCollection.selectedIndex π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLOutputElement π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLOutputElement.checkValidity π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLOutputElement.defaultValue π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLOutputElement.form π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLOutputElement.htmlFor π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Chrome: Before Chrome 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Chrome Android: Before Chrome Android 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Quest Browser: Before Quest Browser 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera: Before Opera 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera Android: Before Opera Android 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Samsung Internet: Before Samsung Internet 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.WebView Android: Before Chrome 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList. |
| api.HTMLOutputElement.labels π | Safari | 7/20/2011 | Firefox | 9/28/2017 | 2262 | |
| api.HTMLOutputElement.name π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLOutputElement.reportValidity π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLOutputElement.setCustomValidity π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670. |
| api.HTMLOutputElement.type π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLOutputElement.validationMessage π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLOutputElement.validity π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLOutputElement.value π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLOutputElement.willValidate π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLParagraphElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLParagraphElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLParamElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLParamElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLParamElement.type π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLParamElement.value π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLParamElement.valueType π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLPictureElement π | Firefox | 5/12/2015 | Safari | 3/21/2016 | 314 | |
| api.HTMLPreElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLPreElement.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLProgressElement π | Firefox | 8/16/2011 | Safari | 7/25/2012 | 344 | |
| api.HTMLProgressElement.labels π | Safari | 7/25/2012 | Firefox | 9/28/2017 | 1891 | |
| api.HTMLProgressElement.max π | Firefox | 8/16/2011 | Safari | 7/25/2012 | 344 | |
| api.HTMLProgressElement.position π | Firefox | 8/16/2011 | Safari | 7/25/2012 | 344 | |
| api.HTMLProgressElement.value π | Firefox | 8/16/2011 | Safari | 7/25/2012 | 344 | |
| api.HTMLQuoteElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLQuoteElement.cite π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLScriptElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLScriptElement.async π | Firefox | 1/21/2010 | Safari | 7/20/2011 | 545 | |
| api.HTMLScriptElement.charset π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLScriptElement.crossOrigin π | Firefox | 7/17/2012 | Safari | 7/25/2012 | 8 | |
| api.HTMLScriptElement.defer π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | Internet Explorer: Before Internet Explorer 10, it implemented defer by a proprietary specification. Since version 10 it conforms to the W3C specification. |
| api.HTMLScriptElement.event π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLScriptElement.fetchPriority π | Safari | 12/11/2023 | Firefox | 10/29/2024 | 323 | |
| api.HTMLScriptElement.htmlFor π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLScriptElement.integrity π | Firefox | 12/15/2015 | Safari | 4/12/2018 | 849 | |
| api.HTMLScriptElement.noModule π | Safari | 9/19/2017 | Firefox | 5/9/2018 | 232 | |
| api.HTMLScriptElement.referrerPolicy π | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | |
| api.HTMLScriptElement.src π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLScriptElement.supports_static π | Firefox | 11/2/2021 | Safari | 9/12/2022 | 314 | |
| api.HTMLScriptElement.text π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLScriptElement.type π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: You should watch for change events on <select> instead of watching <option> elements for events. See bug 1090602 and Multiprocess Firefox Web content compatibility for details. |
| api.HTMLSelectElement.add π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.add.index_before_parameter | Firefox | 11/8/2011 | Safari | 9/30/2015 | 1422 | |
| api.HTMLSelectElement.autocomplete π | Safari | 3/21/2016 | Firefox | 3/13/2018 | 722 | |
| api.HTMLSelectElement.checkValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLSelectElement.disabled π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.item π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.labels π | Safari | 7/20/2011 | Firefox | 9/28/2017 | 2262 | |
| api.HTMLSelectElement.length π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.multiple π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.namedItem π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Edge: namedItem does not appear to take the name attribute into account (only the id attribute) on Internet Explorer and Edge. There is a bug report to Microsoft about this.Internet Explorer: namedItem does not appear to take the name attribute into account (only the id attribute) on Internet Explorer and Edge. There is a bug report to Microsoft about this. |
| api.HTMLSelectElement.options π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.remove π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.reportValidity π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLSelectElement.required π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.HTMLSelectElement.selectedIndex π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.selectedOptions π | Safari | 7/25/2012 | Firefox | 12/10/2013 | 503 | |
| api.HTMLSelectElement.setCustomValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670. |
| api.HTMLSelectElement.size π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.type π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.validationMessage π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLSelectElement.validity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLSelectElement.value π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLSelectElement.willValidate π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.HTMLSlotElement π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.HTMLSlotElement.assign π | Firefox | 9/7/2021 | Safari | 3/27/2023 | 566 | |
| api.HTMLSlotElement.assignedElements π | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| api.HTMLSlotElement.assignedNodes π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.HTMLSlotElement.name π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.HTMLSlotElement.slotchange_event π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | Safari: The onslotchange event handler property is not supported.Safari on iOS: The onslotchange event handler property is not supported.WebView on iOS: The onslotchange event handler property is not supported. |
| api.HTMLSourceElement π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLSourceElement.height π | Safari | 9/20/2021 | Firefox | 12/13/2022 | 449 | |
| api.HTMLSourceElement.media π | Safari | 3/18/2008 | Firefox | 8/28/2012 | 1624 | |
| api.HTMLSourceElement.sizes π | Firefox | 5/12/2015 | Safari | 3/27/2017 | 685 | |
| api.HTMLSourceElement.src π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLSourceElement.srcset π | Firefox | 5/12/2015 | Safari | 3/27/2017 | 685 | |
| api.HTMLSourceElement.type π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLSourceElement.width π | Safari | 9/20/2021 | Firefox | 12/13/2022 | 449 | |
| api.HTMLSpanElement π | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | |
| api.HTMLStyleElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLStyleElement.disabled π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLStyleElement.media π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLStyleElement.sheet π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLStyleElement.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTableCaptionElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCaptionElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.abbr π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.axis π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.bgColor π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.cellIndex π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.ch π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.chOff π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.colSpan π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.headers π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.height π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.noWrap π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.rowSpan π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.scope π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.vAlign π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableCellElement.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableColElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableColElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableColElement.ch π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableColElement.chOff π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableColElement.span π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableColElement.vAlign π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableColElement.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.bgColor π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.border π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.caption π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.cellPadding π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.cellSpacing π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.createCaption π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.createTBody π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.HTMLTableElement.createTFoot π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.createTHead π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.deleteCaption π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.deleteRow π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.deleteTFoot π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.deleteTHead π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.frame π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.insertRow π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Starting with Firefox 20, the index parameter has been made optional and defaults to -1 as per HTML specification.Firefox for Android: Starting with Firefox for Android 20, the index parameter has been made optional and defaults to -1 as per HTML specification. |
| api.HTMLTableElement.rows π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.rules π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.summary π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.tBodies π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.tFoot π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.tHead π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableElement.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.bgColor π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.cells π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.ch π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.chOff π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.deleteCell π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.insertCell π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.insertCell.index_parameter_negative_one | Safari | 10/26/2007 | Firefox | 4/2/2013 | 1985 | |
| api.HTMLTableRowElement.insertCell.index_parameter_optional | Safari | 10/26/2007 | Firefox | 4/2/2013 | 1985 | |
| api.HTMLTableRowElement.rowIndex π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.sectionRowIndex π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableRowElement.vAlign π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableSectionElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableSectionElement.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableSectionElement.ch π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableSectionElement.chOff π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableSectionElement.deleteRow π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableSectionElement.insertRow π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableSectionElement.rows π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTableSectionElement.vAlign π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTemplateElement π | Firefox | 6/25/2013 | Safari | 10/16/2014 | 478 | |
| api.HTMLTemplateElement.content π | Firefox | 6/25/2013 | Safari | 10/16/2014 | 478 | |
| api.HTMLTemplateElement.shadowRootClonable π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| api.HTMLTemplateElement.shadowRootDelegatesFocus π | Firefox | 2/20/2024 | Safari | 9/16/2024 | 209 | |
| api.HTMLTemplateElement.shadowRootMode π | Safari | 3/27/2023 | Firefox | 2/20/2024 | 330 | |
| api.HTMLTemplateElement.shadowRootSerializable π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | |
| api.HTMLTextAreaElement π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.autocomplete π | Safari | 3/21/2016 | Firefox | 3/13/2018 | 722 | |
| api.HTMLTextAreaElement.checkValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLTextAreaElement.cols π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.defaultValue π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.dirName π | Safari | 7/25/2012 | Firefox | 8/1/2023 | 4024 | |
| api.HTMLTextAreaElement.disabled π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.form π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.labels π | Safari | 7/20/2011 | Firefox | 9/28/2017 | 2262 | |
| api.HTMLTextAreaElement.maxLength π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLTextAreaElement.minLength π | Firefox | 1/24/2017 | Safari | 3/27/2017 | 62 | |
| api.HTMLTextAreaElement.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.placeholder π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLTextAreaElement.readOnly π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.reportValidity π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.HTMLTextAreaElement.required π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLTextAreaElement.rows π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.select π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.select_event π | Safari | 6/23/2003 | Firefox | 8/16/2011 | 2976 | |
| api.HTMLTextAreaElement.selectionDirection π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.HTMLTextAreaElement.selectionEnd π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.HTMLTextAreaElement.selectionStart π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.HTMLTextAreaElement.setCustomValidity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670. |
| api.HTMLTextAreaElement.setRangeText π | Safari | 10/22/2013 | Firefox | 2/4/2014 | 105 | |
| api.HTMLTextAreaElement.setSelectionRange π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.HTMLTextAreaElement.textLength π | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | |
| api.HTMLTextAreaElement.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.validationMessage π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLTextAreaElement.validity π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.HTMLTextAreaElement.value π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.HTMLTextAreaElement.willValidate π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.HTMLTextAreaElement.wrap π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.HTMLTimeElement π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| api.HTMLTimeElement.dateTime π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| api.HTMLTitleElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTitleElement.text π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLTrackElement π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | Firefox: Before Firefox 50, text tracks would only load if the <track> element is in a document.Firefox for Android: Before Firefox for Android 50, text tracks would only load if the <track> element is in a document. |
| api.HTMLTrackElement.cuechange_event π | Safari | 9/20/2016 | Firefox | 7/9/2019 | 1022 | Chrome: The oncuechange event handler property is not supported.Chrome Android: The oncuechange event handler property is not supported.Quest Browser: The oncuechange event handler property is not supported.Opera: The oncuechange event handler property is not supported.Opera Android: The oncuechange event handler property is not supported.Safari: The oncuechange event handler property is not supported.Safari on iOS: The oncuechange event handler property is not supported.Samsung Internet: The oncuechange event handler property is not supported.WebView Android: The oncuechange event handler property is not supported.WebView on iOS: The oncuechange event handler property is not supported. |
| api.HTMLTrackElement.default π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.HTMLTrackElement.kind π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.HTMLTrackElement.label π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.HTMLTrackElement.readyState π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.HTMLTrackElement.src π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | Firefox: Before Firefox 50, setting the src property did not work properly.Firefox for Android: Before Firefox for Android 50, setting the src property did not work properly. |
| api.HTMLTrackElement.srclang π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.HTMLTrackElement.track π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.HTMLUListElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLUListElement.compact π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLUListElement.type π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.HTMLUnknownElement π | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | |
| api.HTMLVideoElement π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLVideoElement.cancelVideoFrameCallback π | Safari | 3/14/2022 | Firefox | 10/29/2024 | 960 | |
| api.HTMLVideoElement.disablePictureInPicture π | Safari | 3/24/2020 | Firefox | 1/23/2024 | 1400 | Firefox: When this property is set to true, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.Firefox: This property is undefined, but still has an effect if set to a value.Firefox: When this property is set to true, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.Firefox for Android: When this property is set to true, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.Firefox for Android: This property is undefined, but still has an effect if set to a value.Firefox for Android: When this property is set to true, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP. |
| api.HTMLVideoElement.getVideoPlaybackQuality π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+. |
| api.HTMLVideoElement.height π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLVideoElement.poster π | Safari | 3/18/2008 | Firefox | 1/21/2010 | 674 | |
| api.HTMLVideoElement.requestVideoFrameCallback π | Safari | 3/14/2022 | Firefox | 10/29/2024 | 960 | |
| api.HTMLVideoElement.resize_event π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Edge: The onresize event handler property is not supported.Internet Explorer: The onresize event handler property is not supported. |
| api.HTMLVideoElement.videoHeight π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLVideoElement.videoWidth π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HTMLVideoElement.width π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.HashChangeEvent π | Firefox | 1/21/2010 | Safari | 6/7/2010 | 137 | |
| api.HashChangeEvent.HashChangeEvent π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| api.HashChangeEvent.newURL π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.HashChangeEvent.oldURL π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.Headers π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Headers.@@iterator | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.Headers.Headers π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Headers.append π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Headers.delete π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Headers.entries | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.Headers.forEach | Firefox | 6/7/2016 | Safari | 3/27/2017 | 293 | |
| api.Headers.get π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | Chrome: Before version 57, get() returns only the first value for the specified header.Chrome Android: Before version 57, get() returns only the first value for the specified header.Firefox: Before version 52, get() returns only the first value for the specified header.Firefox for Android: Before version 52, get() returns only the first value for the specified header.Quest Browser: Before version 5.0, get() returns only the first value for the specified header.Opera: Before version 44, get() returns only the first value for the specified header.Opera Android: Before version 43, get() returns only the first value for the specified header.Samsung Internet: Before version 7.0, get() returns only the first value for the specified header.WebView Android: Before version 57, get() returns only the first value for the specified header. |
| api.Headers.getSetCookie π | Firefox | 4/11/2023 | Safari | 9/18/2023 | 160 | |
| api.Headers.has π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Headers.iterate_combined_duplicates | Safari | 3/27/2017 | Firefox | 11/14/2017 | 232 | |
| api.Headers.iterate_lexicographically | Safari | 3/27/2017 | Firefox | 11/14/2017 | 232 | |
| api.Headers.keys | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.Headers.set π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Headers.values | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.History π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.History.back π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.History.forward π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.History.go π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.History.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.History.pushState π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Until Firefox 5, the passed object is serialized using JSON. Starting in Firefox 6, the object is serialized using the structured clone algorithm. This allows a wider variety of objects to be safely passed.Firefox for Android: Until Firefox for Android 5, the passed object is serialized using JSON. Starting in Firefox for Android 6, the object is serialized using the structured clone algorithm. This allows a wider variety of objects to be safely passed. |
| api.History.replaceState π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Until Firefox 5, the passed object is serialized using JSON. Starting in Firefox 6, the object is serialized using the structured clone algorithm. This allows a wider variety of objects to be safely passed.Firefox for Android: Until Firefox for Android 5, the passed object is serialized using JSON. Starting in Firefox for Android 6, the object is serialized using the structured clone algorithm. This allows a wider variety of objects to be safely passed. |
| api.History.scrollRestoration π | Firefox | 4/26/2016 | Safari | 9/19/2017 | 511 | |
| api.History.state π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.IDBCursor π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBCursor.advance π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBCursor.continue π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBCursor.continuePrimaryKey π | Firefox | 1/31/2012 | Safari | 3/27/2017 | 1882 | |
| api.IDBCursor.delete π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBCursor.direction π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBCursor.key π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBCursor.key.binary_keys | Firefox | 1/24/2017 | Safari | 3/27/2017 | 62 | |
| api.IDBCursor.primaryKey π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBCursor.request π | Firefox | 6/2/2020 | Safari | 9/20/2021 | 475 | |
| api.IDBCursor.source π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBCursor.update π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBCursor.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IDBCursorWithValue π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBCursorWithValue.value π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBCursorWithValue.worker_support | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| api.IDBDatabase π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBDatabase.close π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBDatabase.close_event π | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.IDBDatabase.createObjectStore π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBDatabase.deleteObjectStore π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBDatabase.name π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBDatabase.objectStoreNames π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBDatabase.transaction π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBDatabase.version π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBDatabase.versionchange_event π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBDatabase.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IDBFactory π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBFactory.cmp π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBFactory.databases π | Safari | 9/16/2020 | Firefox | 5/14/2024 | 1336 | |
| api.IDBFactory.deleteDatabase π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBFactory.open π | Firefox | 1/31/2012 | Safari | 9/20/2021 | 3520 | Safari: In some releases of Safari 14, the first indexedDB.open() call hangs forever, see bug 226547.Safari on iOS: In some releases of Safari on iOS 14, the first indexedDB.open() call hangs forever, see bug 226547.WebView on iOS: In some releases of WebView on iOS 14, the first indexedDB.open() call hangs forever, see bug 226547. |
| api.IDBFactory.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IDBIndex π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBIndex.count π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.get π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.getAll π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.IDBIndex.getAllKeys π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.IDBIndex.getKey π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.keyPath π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.multiEntry π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.name π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.name.renaming_through_name_setter | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.IDBIndex.objectStore π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.openCursor π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.openKeyCursor π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.unique π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBIndex.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IDBKeyRange π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBKeyRange.bound_static π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBKeyRange.includes π | Firefox | 6/7/2016 | Safari | 3/27/2017 | 293 | |
| api.IDBKeyRange.lower π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBKeyRange.lowerBound_static π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBKeyRange.lowerOpen π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBKeyRange.only_static π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBKeyRange.upper π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBKeyRange.upperBound_static π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBKeyRange.upperOpen π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBKeyRange.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IDBObjectStore π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBObjectStore.add π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.autoIncrement π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.clear π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.count π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.createIndex π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.delete π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.deleteIndex π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.get π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.getAll π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.IDBObjectStore.getAllKeys π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.IDBObjectStore.getKey π | Firefox | 1/24/2017 | Safari | 3/27/2017 | 62 | |
| api.IDBObjectStore.index π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.indexNames π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.keyPath π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.name π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.name.renaming_through_name_setter | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.IDBObjectStore.openCursor π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.openKeyCursor π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.IDBObjectStore.put π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.transaction π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBObjectStore.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IDBOpenDBRequest π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBOpenDBRequest.blocked_event π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBOpenDBRequest.upgradeneeded_event π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBOpenDBRequest.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IDBRequest π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBRequest.error π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBRequest.error.transient_unrecoverable_read_errors π | Firefox | 7/17/2012 | Safari | 10/16/2014 | 821 | Chrome: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.Chrome: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.Chrome Android: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.Chrome Android: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.Opera: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.Opera: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.Opera Android: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.Opera Android: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.WebView Android: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.WebView Android: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors. |
| api.IDBRequest.error_event π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBRequest.readyState π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBRequest.result π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBRequest.source π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBRequest.success_event π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBRequest.transaction π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBRequest.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IDBTransaction π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBTransaction.abort π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBTransaction.abort_event π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBTransaction.commit π | Firefox | 3/10/2020 | Safari | 9/20/2021 | 559 | |
| api.IDBTransaction.complete_event π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBTransaction.db π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBTransaction.durability π | Safari | 9/20/2021 | Firefox | 5/14/2024 | 967 | |
| api.IDBTransaction.error π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBTransaction.error_event π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBTransaction.mode π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBTransaction.objectStore π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBTransaction.objectStoreNames π | Firefox | 1/31/2012 | Safari | 3/27/2017 | 1882 | |
| api.IDBTransaction.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IDBVersionChangeEvent π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.IDBVersionChangeEvent.IDBVersionChangeEvent π | Firefox | 10/29/2013 | Safari | 9/20/2016 | 1057 | |
| api.IDBVersionChangeEvent.newVersion π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBVersionChangeEvent.oldVersion π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.IDBVersionChangeEvent.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.IIRFilterNode π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.IIRFilterNode.IIRFilterNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.IIRFilterNode.getFrequencyResponse π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.ImageBitmap π | Firefox | 11/3/2015 | Safari | 9/20/2021 | 2148 | |
| api.ImageBitmap.close π | Firefox | 4/26/2016 | Safari | 9/20/2021 | 1973 | |
| api.ImageBitmap.height π | Firefox | 11/3/2015 | Safari | 9/20/2021 | 2148 | |
| api.ImageBitmap.width π | Firefox | 11/3/2015 | Safari | 9/20/2021 | 2148 | |
| api.ImageBitmapRenderingContext π | Firefox | 4/26/2016 | Safari | 4/12/2018 | 716 | |
| api.ImageBitmapRenderingContext.canvas π | Safari | 4/12/2018 | Firefox | 2/8/2022 | 1398 | |
| api.ImageBitmapRenderingContext.transferFromImageBitmap π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| api.ImageCapture π | Firefox | 1/13/2015 | Safari | 3/5/2024 | 3339 | |
| api.ImageCapture.ImageCapture π | Firefox | 1/13/2015 | Safari | 3/5/2024 | 3339 | |
| api.ImageCapture.takePhoto π | Firefox | 1/13/2015 | Safari | 3/5/2024 | 3339 | Chrome: photoSettings parameter not supported.Chrome Android: photoSettings parameter not supported.Opera: photoSettings parameter not supported.Opera Android: photoSettings parameter not supported.Samsung Internet: photoSettings parameter not supported.WebView Android: photoSettings parameter not supported. |
| api.ImageCapture.track π | Firefox | 1/13/2015 | Safari | 3/5/2024 | 3339 | |
| api.ImageData π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.ImageData.ImageData π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| api.ImageData.data π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.ImageData.height π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.ImageData.width π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.ImageData.worker_support | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.InputDeviceInfo π | Firefox | 7/2/2015 | Safari | 9/19/2017 | 810 | |
| api.InputEvent π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.InputEvent.InputEvent π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.InputEvent.data π | Safari | 3/27/2017 | Firefox | 5/21/2019 | 785 | |
| api.InputEvent.dataTransfer π | Safari | 3/27/2017 | Firefox | 5/21/2019 | 785 | |
| api.InputEvent.getTargetRanges π | Safari | 3/27/2017 | Firefox | 3/23/2021 | 1457 | |
| api.InputEvent.inputType π | Safari | 3/27/2017 | Firefox | 3/19/2019 | 722 | |
| api.InputEvent.isComposing π | Firefox | 7/22/2014 | Safari | 3/27/2023 | 3170 | |
| api.InstallEvent π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.IntersectionObserver π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserver.IntersectionObserver π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | Firefox: Before version 96, the constructor throws a DOMException if the options.rootMargin option is passed an empty string (see bug 1738791). |
| api.IntersectionObserver.IntersectionObserver.options_root_parameter_Document | Firefox | 5/5/2020 | Safari | 9/16/2020 | 134 | |
| api.IntersectionObserver.disconnect π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | Edge: Available since Windows Insider Preview Build 14986. |
| api.IntersectionObserver.observe π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserver.root π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserver.rootMargin π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | Safari: rootMargin does not work with <iframe>s.Safari on iOS: rootMargin does not work with <iframe>s.WebView on iOS: rootMargin does not work with <iframe>s. |
| api.IntersectionObserver.takeRecords π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | Edge: Available since Windows Insider Preview Build 14986. |
| api.IntersectionObserver.thresholds π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserver.unobserve π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | Edge: Available since Windows Insider Preview Build 14986. |
| api.IntersectionObserverEntry π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserverEntry.boundingClientRect π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserverEntry.intersectionRatio π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserverEntry.intersectionRect π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserverEntry.isIntersecting π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserverEntry.rootBounds π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserverEntry.target π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.IntersectionObserverEntry.time π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.KeyboardEvent π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | |
| api.KeyboardEvent.KeyboardEvent π | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | |
| api.KeyboardEvent.altKey π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | |
| api.KeyboardEvent.charCode π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | |
| api.KeyboardEvent.code π | Firefox | 5/12/2015 | Safari | 3/27/2017 | 685 | Chrome Android: The value is always empty.Firefox for Android: The value is always empty.Quest Browser: The value is always empty.Opera Android: The value is always empty.Samsung Internet: The value is always empty.WebView Android: The value is always empty. |
| api.KeyboardEvent.ctrlKey π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | |
| api.KeyboardEvent.getModifierState π | Firefox | 8/28/2012 | Safari | 3/27/2017 | 1672 | |
| api.KeyboardEvent.getModifierState.key_parameter_alt | Firefox | 8/28/2012 | Safari | 3/27/2017 | 1672 | |
| api.KeyboardEvent.getModifierState.key_parameter_altgraph | Firefox | 8/28/2012 | Safari | 3/27/2017 | 1672 | |
| api.KeyboardEvent.getModifierState.key_parameter_capslock | Firefox | 8/28/2012 | Safari | 3/27/2017 | 1672 | |
| api.KeyboardEvent.getModifierState.key_parameter_control | Firefox | 8/28/2012 | Safari | 3/27/2017 | 1672 | |
| api.KeyboardEvent.getModifierState.key_parameter_meta | Firefox | 8/28/2012 | Safari | 3/27/2017 | 1672 | |
| api.KeyboardEvent.getModifierState.key_parameter_shift | Firefox | 8/28/2012 | Safari | 3/27/2017 | 1672 | |
| api.KeyboardEvent.initKeyboardEvent π | Safari | 2/2/2004 | Firefox | 11/14/2017 | 5034 | |
| api.KeyboardEvent.isComposing π | Firefox | 7/22/2014 | Safari | 3/27/2017 | 979 | |
| api.KeyboardEvent.key π | Firefox | 8/6/2013 | Safari | 3/27/2017 | 1329 | Internet Explorer: IE's implementation does not completely match the current spec because it is based on an older version of the spec. |
| api.KeyboardEvent.key.dead_key | Firefox | 3/31/2015 | Safari | 3/27/2017 | 727 | |
| api.KeyboardEvent.key.non_printable_keys | Firefox | 8/6/2013 | Safari | 3/27/2017 | 1329 | Internet Explorer: IE's implementation does not completely match the current spec because it is based on an older version of the spec. |
| api.KeyboardEvent.key.printable_key | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | Internet Explorer: IE's implementation does not completely match the current spec because it is based on an older version of the spec. |
| api.KeyboardEvent.keyCode π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | |
| api.KeyboardEvent.location π | Firefox | 8/28/2012 | Safari | 10/16/2014 | 779 | |
| api.KeyboardEvent.metaKey π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | Firefox: Since Firefox 48, the Windows key is no longer treated as a meta key.Firefox for Android: Since Firefox for Android 48, the Windows key is no longer treated as a meta key. |
| api.KeyboardEvent.repeat π | Firefox | 3/18/2014 | Safari | 3/27/2017 | 1105 | Chrome: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Chrome Android: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Quest Browser: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Opera: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Opera Android: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Samsung Internet: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.WebView Android: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886. |
| api.KeyboardEvent.shiftKey π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | |
| api.KeyframeEffect π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.KeyframeEffect.KeyframeEffect π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.KeyframeEffect.composite π | Firefox | 8/25/2020 | Safari | 9/12/2022 | 748 | |
| api.KeyframeEffect.getKeyframes π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.KeyframeEffect.iterationComposite π | Firefox | 8/25/2020 | Safari | 3/27/2023 | 944 | |
| api.KeyframeEffect.pseudoElement π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| api.KeyframeEffect.setKeyframes π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.KeyframeEffect.target π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.Location π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Location.assign π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Deno: This method exists but has no effect in Deno. A location can be assigned using the --location runtime flag. |
| api.Location.hash π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Location.host π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Location.hostname π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Location.href π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Location.origin π | Safari | 7/20/2011 | Firefox | 5/14/2013 | 664 | Firefox: Before Firefox 49, results for URL using the blob scheme incorrectly returned null.Firefox for Android: Before Firefox for Android 49, results for URL using the blob scheme incorrectly returned null.Internet Explorer: Intranet sites are set to Compatibility View, which will emulate IE7 and omit window.location.origin. |
| api.Location.pathname π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 53, the pathname property returned wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return "/x?a=true&b=false" rather than "/x".Firefox for Android: Before Firefox for Android 53, the pathname property returned wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return "/x?a=true&b=false" rather than "/x".Internet Explorer: Internet Explorer does not provide the leading slash character in the pathname (docs/Web/API/Location instead of /docs/Web/API/Location). |
| api.Location.port π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Location.protocol π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Location.reload π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Deno: This method exists but has no effect in Deno.Edge: Before Edge 79, if a page added to Trusted Sites contains a cross-origin iframe, then calling reload() from within the iframe reloads the trusted page (in other words, the top page reloads, not the iframe).Internet Explorer: If a page added to Trusted Sites contains a cross-origin iframe, then calling reload() from within the iframe reloads the trusted page (in other words, the top page reloads, not the iframe). |
| api.Location.replace π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Deno: This method exists but has no effect in Deno. A location can be assigned using the --location runtime flag. |
| api.Location.search π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 53, the search property returned wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, search would return "", rather than "?a=true&b=false".Firefox for Android: Before Firefox for Android 53, the search property returned wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, search would return "", rather than "?a=true&b=false". |
| api.Location.toString π | Safari | 6/23/2003 | Firefox | 6/25/2013 | 3655 | Internet Explorer: Intranet sites are set to Compatibility View, which will emulate IE7 and omit window.location.toString. |
| api.Lock π | Firefox | 1/11/2022 | Safari | 3/14/2022 | 62 | |
| api.Lock.mode π | Firefox | 1/11/2022 | Safari | 3/14/2022 | 62 | |
| api.Lock.name π | Firefox | 1/11/2022 | Safari | 3/14/2022 | 62 | |
| api.LockManager π | Firefox | 1/11/2022 | Safari | 3/14/2022 | 62 | |
| api.LockManager.query π | Firefox | 1/11/2022 | Safari | 3/14/2022 | 62 | |
| api.LockManager.request π | Firefox | 1/11/2022 | Safari | 3/14/2022 | 62 | |
| api.MathMLElement π | Firefox | 12/10/2019 | Safari | 3/24/2020 | 105 | |
| api.MathMLElement.autofocus π | Safari | 3/14/2022 | Firefox | 2/14/2023 | 337 | |
| api.MathMLElement.blur π | Firefox | 12/10/2019 | Safari | 3/24/2020 | 105 | |
| api.MathMLElement.dataset π | Firefox | 12/10/2019 | Safari | 3/24/2020 | 105 | |
| api.MathMLElement.focus π | Firefox | 12/10/2019 | Safari | 3/24/2020 | 105 | |
| api.MathMLElement.style π | Firefox | 12/10/2019 | Safari | 3/24/2020 | 105 | |
| api.MathMLElement.tabIndex π | Firefox | 12/10/2019 | Safari | 3/24/2020 | 105 | |
| api.MediaCapabilities π | Firefox | 10/23/2018 | Safari | 9/19/2019 | 331 | |
| api.MediaCapabilities.decodingInfo π | Firefox | 10/23/2018 | Safari | 9/19/2019 | 331 | Chrome: codecs string can contain any subset of optional parameters (should be all or none).Chrome: Errors if codecs string contains unexpected characters (should evaluate string up to character).Chrome Android: codecs string can contain any subset of optional parameters (should be all or none).Chrome Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Edge: codecs string can contain any subset of optional parameters (should be all or none).Edge: Errors if codecs string contains unexpected characters (should evaluate string up to character).Firefox: The webrtc value of the type option is named transmission.Firefox: Before Firefox 101, decodingInfo() ignored codecs parameter options for av01 codecs (treating them as av1).Firefox for Android: The webrtc value of the type option is named transmission.Firefox for Android: Before Firefox for Android 101, decodingInfo() ignored codecs parameter options for av01 codecs (treating them as av1).Quest Browser: codecs string can contain any subset of optional parameters (should be all or none).Quest Browser: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera: codecs string can contain any subset of optional parameters (should be all or none).Opera: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera Android: codecs string can contain any subset of optional parameters (should be all or none).Opera Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Samsung Internet: codecs string can contain any subset of optional parameters (should be all or none).Samsung Internet: Errors if codecs string contains unexpected characters (should evaluate string up to character).WebView Android: codecs string can contain any subset of optional parameters (should be all or none).WebView Android: Errors if codecs string contains unexpected characters (should evaluate string up to character). |
| api.MediaCapabilities.encodingInfo π | Firefox | 10/23/2018 | Safari | 3/14/2022 | 1238 | Firefox: The webrtc value of the type option is named transmission.Firefox for Android: The webrtc value of the type option is named transmission. |
| api.MediaDeviceInfo π | Firefox | 7/2/2015 | Safari | 9/19/2017 | 810 | |
| api.MediaDeviceInfo.deviceId π | Firefox | 7/2/2015 | Safari | 9/19/2017 | 810 | |
| api.MediaDeviceInfo.groupId π | Firefox | 7/2/2015 | Safari | 9/19/2017 | 810 | Firefox: Before Firefox 67, related devices are not actually grouped together by groupId.Firefox for Android: Before Firefox for Android 67, related devices are not actually grouped together by groupId. |
| api.MediaDeviceInfo.kind π | Firefox | 7/2/2015 | Safari | 9/19/2017 | 810 | |
| api.MediaDeviceInfo.label π | Firefox | 7/2/2015 | Safari | 9/19/2017 | 810 | |
| api.MediaDeviceInfo.toJSON π | Firefox | 11/3/2015 | Safari | 9/19/2017 | 686 | |
| api.MediaDevices π | Firefox | 10/14/2014 | Safari | 9/19/2017 | 1071 | |
| api.MediaDevices.devicechange_event π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| api.MediaDevices.enumerateDevices π | Safari | 9/19/2017 | Firefox | 8/1/2023 | 2142 | Firefox: enumerateDevices() enumerates both input and output devices. Previously only input devices were returned.Firefox: enumerateDevices() only returns input devices.Firefox for Android: enumerateDevices() enumerates both input and output devices. Previously only input devices were returned.Firefox for Android: enumerateDevices() only returns input devices. |
| api.MediaDevices.getDisplayMedia π | Firefox | 3/19/2019 | Safari | 9/19/2019 | 184 | Chrome Android: From Chrome Android 72 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135.Edge: Available as a member of Navigator instead of MediaDevices.Firefox: Since Firefox 33 you can capture screen data using getUserMedia(), with a video constraint called mediaSource. Before 52 it relied on a client-configurable list of allowed sites.Firefox for Android: From Firefox Android 66 to 79, this method was exposed, but always failed with NotAllowedError.Quest Browser: From Quest Browser 6.0 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135.Opera Android: From Opera Android 51 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135.Samsung Internet: From Samsung Internet 11.0 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135.WebView Android: From WebView Android 72 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135. |
| api.MediaDevices.getSupportedConstraints π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.MediaDevices.getUserMedia π | Firefox | 2/24/2015 | Safari | 9/19/2017 | 938 | Chrome: If you need this capability before version 53, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Chrome Android: If you need this capability before version 53, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Firefox: If you need this capability before version 36, refer to navigator.mozGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Firefox: Before Firefox 55, getUserMedia() incorrectly returns NotSupportedError when the list of constraints specified is empty, or has all constraints set to false. Starting in Firefox 55, this situation now correctly calls the failure handler with a TypeError.Firefox: When using the Firefox-specific video constraint called mediaSource to request display capture, Firefox 66 and later consider values of screen and window to both cause a list of screens and windows to be shown.Firefox: Starting in Firefox 66, getUserMedia() can no longer be used in sandboxed <iframe>s or data URLs entered in the address bar by the user.Firefox for Android: If you need this capability before version 36, refer to navigator.mozGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Firefox for Android: Before Firefox for Android 55, getUserMedia() incorrectly returns NotSupportedError when the list of constraints specified is empty, or has all constraints set to false. Starting in Firefox for Android 55, this situation now correctly calls the failure handler with a TypeError.Firefox for Android: When using the Firefox for Android-specific video constraint called mediaSource to request display capture, Firefox for Android 66 and later consider values of screen and window to both cause a list of screens and windows to be shown.Firefox for Android: Starting in Firefox for Android 66, getUserMedia() can no longer be used in sandboxed <iframe>s or data URLs entered in the address bar by the user.Quest Browser: If you need this capability before version 5.0, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Opera: If you need this capability before version 40, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Opera Android: If you need this capability before version 41, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API. |
| api.MediaDevices.getUserMedia.secure_context_required | Safari | 9/19/2017 | Firefox | 7/9/2019 | 658 | |
| api.MediaElementAudioSourceNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.MediaElementAudioSourceNode.MediaElementAudioSourceNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.MediaElementAudioSourceNode.mediaElement π | Safari | 7/25/2012 | Firefox | 10/22/2019 | 2645 | |
| api.MediaEncryptedEvent π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaEncryptedEvent.MediaEncryptedEvent π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaEncryptedEvent.initData π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaEncryptedEvent.initDataType π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaError π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| api.MediaError.code π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.MediaError.message π | Firefox | 3/7/2017 | Safari | 9/20/2021 | 1658 | |
| api.MediaKeyMessageEvent π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeyMessageEvent.MediaKeyMessageEvent π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeyMessageEvent.message π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeyMessageEvent.messageType π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession.close π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession.closed π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession.expiration π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession.generateRequest π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession.keyStatuses π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession.keystatuseschange_event π | Firefox | 3/7/2017 | Safari | 3/25/2019 | 748 | Chrome: The onkeystatuseschange event handler property is not supported.Chrome Android: The onkeystatuseschange event handler property is not supported.Opera: The onkeystatuseschange event handler property is not supported.Opera Android: The onkeystatuseschange event handler property is not supported.Samsung Internet: The onkeystatuseschange event handler property is not supported.WebView Android: The onkeystatuseschange event handler property is not supported. |
| api.MediaKeySession.load π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession.message_event π | Firefox | 3/7/2017 | Safari | 3/25/2019 | 748 | Chrome: The onmessage event handler property is not supported.Chrome Android: The onmessage event handler property is not supported.Opera: The onmessage event handler property is not supported.Opera Android: The onmessage event handler property is not supported.Samsung Internet: The onmessage event handler property is not supported.WebView Android: The onmessage event handler property is not supported. |
| api.MediaKeySession.remove π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession.sessionId π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySession.update π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeyStatusMap π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeyStatusMap.@@iterator | Firefox | 3/8/2016 | Safari | 3/25/2019 | 1112 | |
| api.MediaKeyStatusMap.entries | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeyStatusMap.forEach | Firefox | 6/7/2016 | Safari | 3/25/2019 | 1021 | |
| api.MediaKeyStatusMap.get π | Firefox | 3/8/2016 | Safari | 3/25/2019 | 1112 | |
| api.MediaKeyStatusMap.has π | Firefox | 3/8/2016 | Safari | 3/25/2019 | 1112 | |
| api.MediaKeyStatusMap.keys | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeyStatusMap.size π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeyStatusMap.values | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySystemAccess π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySystemAccess.createMediaKeys π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeySystemAccess.getConfiguration π | Firefox | 12/15/2015 | Safari | 3/25/2019 | 1196 | Firefox: Before Firefox 50, the returned object has neither a distinctiveIdentifier nor a persistentState property.Firefox for Android: Before Firefox for Android 50, the returned object has neither a distinctiveIdentifier nor a persistentState property. |
| api.MediaKeySystemAccess.keySystem π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeys π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeys.createSession π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaKeys.setServerCertificate π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | |
| api.MediaList π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MediaList.appendMedium π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MediaList.deleteMedium π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MediaList.item π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MediaList.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MediaList.mediaText π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MediaList.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MediaMetadata π | Safari | 9/16/2020 | Firefox | 10/20/2020 | 34 | Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface. |
| api.MediaMetadata.MediaMetadata π | Safari | 9/16/2020 | Firefox | 10/20/2020 | 34 | |
| api.MediaMetadata.album π | Safari | 9/16/2020 | Firefox | 10/20/2020 | 34 | |
| api.MediaMetadata.artist π | Safari | 9/16/2020 | Firefox | 10/20/2020 | 34 | |
| api.MediaMetadata.artwork π | Safari | 9/16/2020 | Firefox | 10/20/2020 | 34 | |
| api.MediaMetadata.title π | Safari | 9/16/2020 | Firefox | 10/20/2020 | 34 | |
| api.MediaQueryList π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.MediaQueryList.EventTarget_inheritance | Firefox | 8/8/2017 | Safari | 9/16/2020 | 1135 | |
| api.MediaQueryList.addListener π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.MediaQueryList.change_event π | Firefox | 8/8/2017 | Safari | 9/16/2020 | 1135 | |
| api.MediaQueryList.matches π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.MediaQueryList.media π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.MediaQueryList.removeListener π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.MediaQueryListEvent π | Firefox | 8/8/2017 | Safari | 9/16/2020 | 1135 | |
| api.MediaQueryListEvent.MediaQueryListEvent π | Firefox | 8/8/2017 | Safari | 9/16/2020 | 1135 | |
| api.MediaQueryListEvent.matches π | Firefox | 8/8/2017 | Safari | 9/16/2020 | 1135 | |
| api.MediaQueryListEvent.media π | Firefox | 8/8/2017 | Safari | 9/16/2020 | 1135 | |
| api.MediaRecorder π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | Firefox: Before Firefox 58, using MediaStream.addTrack() on a stream obtained using getUserMedia(), then attempting to record the resulting stream would result in only recording the original stream without the added tracks (severe bug).Firefox for Android: Before Firefox for Android 58, using MediaStream.addTrack() on a stream obtained using getUserMedia(), then attempting to record the resulting stream would result in only recording the original stream without the added tracks (severe bug). |
| api.MediaRecorder.MediaRecorder π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.MediaRecorder.options_parameter | Firefox | 12/15/2015 | Safari | 4/26/2021 | 1959 | |
| api.MediaRecorder.audioBitsPerSecond π | Firefox | 12/10/2019 | Safari | 4/26/2021 | 503 | |
| api.MediaRecorder.dataavailable_event π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.error_event π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | Chrome: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Chrome Android: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Edge: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Quest Browser: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Opera: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Opera Android: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Samsung Internet: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.WebView Android: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876. |
| api.MediaRecorder.isTypeSupported_static π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.mimeType π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | Chrome: Before Chrome 49, only video is supported, not audio.Chrome Android: Before Chrome Android 49, only video is supported, not audio.Firefox: Starting with Firefox 71, the behavior of mimeType is more consistent. For example, it now returns the media type even after recording has stopped.WebView Android: Before WebView Android 49, only video is supported, not audio. |
| api.MediaRecorder.pause π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.pause_event π | Firefox | 1/29/2019 | Safari | 4/26/2021 | 818 | |
| api.MediaRecorder.requestData π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.resume π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.resume_event π | Firefox | 1/29/2019 | Safari | 4/26/2021 | 818 | |
| api.MediaRecorder.start π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.start_event π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.state π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | Chrome: Before Chrome 49, only video is supported, not audio.Chrome Android: Before Chrome Android 49, only video is supported, not audio.WebView Android: Before WebView Android 49, only video is supported, not audio. |
| api.MediaRecorder.stop π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.stop_event π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.MediaRecorder.stream π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | Chrome: Before Chrome 49, only video is supported, not audio.Chrome Android: Before Chrome Android 49, only video is supported, not audio. |
| api.MediaRecorder.videoBitsPerSecond π | Firefox | 12/10/2019 | Safari | 4/26/2021 | 503 | |
| api.MediaRecorderErrorEvent | Firefox | 11/14/2017 | Safari | 9/16/2020 | 1037 | |
| api.MediaRecorderErrorEvent.MediaRecorderErrorEvent | Firefox | 11/14/2017 | Safari | 9/16/2020 | 1037 | |
| api.MediaRecorderErrorEvent.error | Firefox | 11/14/2017 | Safari | 9/16/2020 | 1037 | |
| api.MediaSession π | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface. |
| api.MediaSession.metadata π | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface. |
| api.MediaSession.playbackState π | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface. |
| api.MediaSession.setActionHandler π | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface. |
| api.MediaSession.setActionHandler.nexttrack_type | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.MediaSession.setActionHandler.pause_type | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.MediaSession.setActionHandler.play_type | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.MediaSession.setActionHandler.previoustrack_type | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.MediaSession.setActionHandler.seekbackward_type | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.MediaSession.setActionHandler.seekforward_type | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.MediaSession.setActionHandler.seekto_type | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.MediaSession.setActionHandler.skipad_type | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.MediaSession.setActionHandler.stop_type | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.MediaSession.setPositionState π | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface. |
| api.MediaSource π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.MediaSource π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.activeSourceBuffers π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.addSourceBuffer π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.clearLiveSeekableRange π | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.duration π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.endOfStream π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.isTypeSupported_static π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Chrome: codecs string can contain any subset of optional parameters (should be all or none).Chrome: Errors if codecs string contains unexpected characters (should evaluate string up to character).Chrome Android: codecs string can contain any subset of optional parameters (should be all or none).Chrome Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Edge: codecs string can contain any subset of optional parameters (should be all or none).Edge: Errors if codecs string contains unexpected characters (should evaluate string up to character).Firefox: Before Firefox 101, isTypeSupported() ignored codecs parameter options for av01 codecs (treating them as av1).Firefox for Android: Before Firefox 101, isTypeSupported() ignored codecs parameter options for av01 codecs (treating them as av1).Internet Explorer: Only works on Windows 8+.Quest Browser: codecs string can contain any subset of optional parameters (should be all or none).Quest Browser: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera: codecs string can contain any subset of optional parameters (should be all or none).Opera: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera Android: codecs string can contain any subset of optional parameters (should be all or none).Opera Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: codecs string can contain any subset of optional parameters (should be all or none).Samsung Internet: Errors if codecs string contains unexpected characters (should evaluate string up to character).WebView Android: codecs string can contain any subset of optional parameters (should be all or none).WebView Android: Errors if codecs string contains unexpected characters (should evaluate string up to character). |
| api.MediaSource.readyState π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.removeSourceBuffer π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.setLiveSeekableRange π | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.sourceBuffers π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.MediaSource.sourceclose_event π | Safari | 3/27/2017 | Firefox | 3/23/2021 | 1457 | Chrome: The onsourceclose event handler property is not supported.Chrome Android: The onsourceclose event handler property is not supported.Edge: The onsourceclose event handler property is not supported.Firefox: The onsourceclose event handler property is not supported.Firefox for Android: The onsourceclose event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onsourceclose event handler property is not supported.Opera Android: The onsourceclose event handler property is not supported.Safari: The onsourceclose event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onsourceclose event handler property is not supported.WebView Android: The onsourceclose event handler property is not supported. |
| api.MediaSource.sourceended_event π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | Chrome: The onsourceended event handler property is not supported.Chrome Android: The onsourceended event handler property is not supported.Edge: The onsourceended event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onsourceended event handler property is not supported.Opera Android: The onsourceended event handler property is not supported.Safari: The onsourceended event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onsourceended event handler property is not supported.WebView Android: The onsourceclose event handler property is not supported. |
| api.MediaSource.sourceopen_event π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | Chrome: The onsourceopen event handler property is not supported.Chrome Android: The onsourceopen event handler property is not supported.Edge: The onsourceopen event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onsourceopen event handler property is not supported.Opera Android: The onsourceopen event handler property is not supported.Safari: The onsourceopen event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onsourceopen event handler property is not supported.WebView Android: The onsourceopen event handler property is not supported. |
| api.MediaStream π | Firefox | 8/28/2012 | Safari | 9/19/2017 | 1848 | |
| api.MediaStream.MediaStream π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.MediaStream.active π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| api.MediaStream.addTrack π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.MediaStream.addtrack_event π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStream.clone π | Firefox | 8/2/2016 | Safari | 9/19/2017 | 413 | |
| api.MediaStream.getAudioTracks π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | Firefox: Before Firefox 64, this method returned an array of AudioStreamTrack objects. However, MediaStreamTrack has now subsumed that interface's functionality.Firefox for Android: Before Firefox for Android 64, this method returned an array of AudioStreamTrack objects. However, MediaStreamTrack has now subsumed that interface's functionality. |
| api.MediaStream.getTrackById π | Firefox | 9/20/2016 | Safari | 9/19/2017 | 364 | |
| api.MediaStream.getTracks π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.MediaStream.getVideoTracks π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | Firefox: Before Firefox 64, this method returned an array of VideoStreamTrack objects. However, MediaStreamTrack has now subsumed that interface's functionality.Firefox for Android: Before Firefox for Android 64, this method returned an array of VideoStreamTrack objects. However, MediaStreamTrack has now subsumed that interface's functionality. |
| api.MediaStream.id π | Firefox | 9/22/2015 | Safari | 9/19/2017 | 728 | |
| api.MediaStream.removeTrack π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.MediaStream.removetrack_event π | Safari | 9/19/2017 | Firefox | 1/7/2020 | 840 | Firefox: Before Firefox 72, the event handler was exposed but had no effect.Firefox for Android: Before Firefox for Android 79, the event handler was exposed but had no effect. |
| api.MediaStreamAudioDestinationNode π | Firefox | 10/29/2013 | Safari | 9/19/2017 | 1421 | |
| api.MediaStreamAudioDestinationNode.MediaStreamAudioDestinationNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.MediaStreamAudioDestinationNode.stream π | Firefox | 10/29/2013 | Safari | 9/19/2017 | 1421 | |
| api.MediaStreamAudioSourceNode π | Firefox | 10/29/2013 | Safari | 9/19/2017 | 1421 | |
| api.MediaStreamAudioSourceNode.MediaStreamAudioSourceNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.MediaStreamAudioSourceNode.mediaStream π | Safari | 9/19/2017 | Firefox | 10/22/2019 | 763 | |
| api.MediaStreamTrack π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.MediaStreamTrack.applyConstraints π | Firefox | 12/15/2015 | Safari | 9/19/2017 | 644 | |
| api.MediaStreamTrack.applyConstraints.deviceId_constraint π | Firefox | 12/15/2015 | Safari | 9/19/2017 | 644 | Firefox: Before Firefox 69, Firefox only supported deviceId in constraints passed into getUserMedia().Firefox for Android: Firefox for Android only supports deviceId when used in constraints passed into getUserMedia(). |
| api.MediaStreamTrack.applyConstraints.echoCancellation_constraint π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.applyConstraints.facingMode_constraint π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.applyConstraints.frameRate_constraint π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.applyConstraints.groupId_constraint π | Safari | 9/19/2017 | Firefox | 10/22/2019 | 763 | |
| api.MediaStreamTrack.applyConstraints.height_constraint π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.applyConstraints.latency_constraint π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.applyConstraints.width_constraint π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.clone π | Firefox | 8/2/2016 | Safari | 9/19/2017 | 413 | |
| api.MediaStreamTrack.enabled π | Firefox | 9/17/2013 | Safari | 9/19/2017 | 1463 | |
| api.MediaStreamTrack.ended_event π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.getCapabilities π | Safari | 9/19/2017 | Firefox | 10/29/2024 | 2597 | |
| api.MediaStreamTrack.getConstraints π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.getSettings π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.id π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.MediaStreamTrack.kind π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.MediaStreamTrack.label π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.MediaStreamTrack.mute_event π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.MediaStreamTrack.muted π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | Firefox: Does not currently track the microphone's muted state from the operating system, see bug 1739163.Firefox for Android: Does not currently track the microphone's muted state from the operating system, see bug 1739163. |
| api.MediaStreamTrack.readyState π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrack.stop π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.MediaStreamTrack.unmute_event π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.MediaStreamTrackEvent π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrackEvent.MediaStreamTrackEvent π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MediaStreamTrackEvent.track π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| api.MessageChannel π | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | Node.js: Available as a part of the worker_threads module. |
| api.MessageChannel.MessageChannel π | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | |
| api.MessageChannel.port1 π | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | |
| api.MessageChannel.port2 π | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | |
| api.MessageEvent π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.MessageEvent.MessageEvent π | Safari | 7/25/2012 | Firefox | 12/10/2013 | 503 | |
| api.MessageEvent.data π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.MessageEvent.initMessageEvent π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.MessageEvent.lastEventId π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.MessageEvent.origin π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.MessageEvent.ports π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.MessageEvent.source π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| api.MessagePort π | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | Node.js: Available as a part of the worker_threads module.Node.js: Available as a part of the worker_threads module.Node.js: Inherits from Node EventEmitter instead of DOM EventTarget. |
| api.MessagePort.close π | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | |
| api.MessagePort.message_event π | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | Node.js: Supports the event, but only via Node EventEmitter. |
| api.MessagePort.messageerror_event π | Firefox | 11/14/2017 | Safari | 3/27/2023 | 1959 | Node.js: Supports the event, but only via Node EventEmitter.Node.js: Supports the event, but only via Node EventEmitter. |
| api.MessagePort.postMessage π | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | Deno: The message parameter does not support cloning Blob values.Deno: The message parameter does not support cloning Blob values.Deno: The transfer parameter does not accept ArrayBuffer items. Passing an ArrayBuffer results in an error being thrown. |
| api.MessagePort.start π | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | |
| api.MessagePort.worker_support | Safari | 6/7/2010 | Firefox | 9/22/2015 | 1933 | |
| api.MimeType π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MimeType.description π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MimeType.enabledPlugin π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MimeType.suffixes π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MimeType.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MimeTypeArray π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MimeTypeArray.item π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Chrome: Before version 59, method parameters were optionalChrome Android: Before version 59, method parameters were optionalQuest Browser: Before version 5.0, method parameters were optionalSamsung Internet: Before Samsung Internet 7.0, method parameters were optionalWebView Android: Before version 59, method parameters were optional |
| api.MimeTypeArray.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MimeTypeArray.namedItem π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Chrome: Before version 59, method parameters were optionalChrome Android: Before version 59, method parameters were optionalQuest Browser: Before version 5.0, method parameters were optionalSamsung Internet: Before Samsung Internet 7.0, method parameters were optionalWebView Android: Before version 59, method parameters were optional |
| api.MouseEvent π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MouseEvent.MouseEvent π | Firefox | 3/13/2012 | Safari | 10/22/2013 | 588 | |
| api.MouseEvent.altKey π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.button π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MouseEvent.buttons π | Firefox | 8/28/2012 | Safari | 4/12/2018 | 2053 | Firefox: Restrictions apply depending on OS. |
| api.MouseEvent.clientX π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MouseEvent.clientY π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.ctrlKey π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.getModifierState π | Firefox | 8/28/2012 | Safari | 3/25/2019 | 2400 | |
| api.MouseEvent.initMouseEvent π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.layerX | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MouseEvent.layerY | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MouseEvent.metaKey π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.movementX π | Firefox | 9/22/2015 | Safari | 9/30/2015 | 8 | |
| api.MouseEvent.movementY π | Firefox | 9/22/2015 | Safari | 9/30/2015 | 8 | |
| api.MouseEvent.offsetX π | Safari | 6/23/2003 | Firefox | 7/2/2015 | 4392 | |
| api.MouseEvent.offsetY π | Safari | 6/23/2003 | Firefox | 7/2/2015 | 4392 | |
| api.MouseEvent.pageX π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.pageY π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.relatedTarget π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.screenX π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.screenY π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.shiftKey π | Safari | 6/23/2003 | Firefox | 11/29/2005 | 890 | |
| api.MouseEvent.x π | Safari | 3/18/2008 | Firefox | 4/19/2017 | 3319 | |
| api.MouseEvent.y π | Safari | 3/18/2008 | Firefox | 4/19/2017 | 3319 | |
| api.MutationEvent | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MutationEvent.attrChange | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MutationEvent.attrName | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MutationEvent.initMutationEvent | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MutationEvent.newValue | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MutationEvent.prevValue | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MutationEvent.relatedNode | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.MutationObserver π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationObserver.MutationObserver π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationObserver.disconnect π | Firefox | 7/17/2012 | Safari | 7/25/2012 | 8 | |
| api.MutationObserver.observe π | Firefox | 7/17/2012 | Safari | 7/25/2012 | 8 | Chrome: Before Chrome 33, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Chrome throws a syntax error.Chrome Android: Before Chrome Android 33, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Chrome Android throws a syntax error.Edge: Before Edge 79, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Edge throws a syntax error.Firefox: Before Firefox 36, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Firefox throws a syntax error.Firefox for Android: Before Firefox for Android 36, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Firefox for Android throws a syntax error.Internet Explorer: Internet Explorer requires attributes: true when using attributeFilter or attributeOldValue. If attributes: true is not present, then Internet Explorer throws a syntax error.Quest Browser: Before Quest Browser 5.0, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Quest Browser throws a syntax error.Opera: Before Opera 20, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Opera throws a syntax error.Opera Android: Before Opera Android 20, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Opera Android throws a syntax error.Safari: Before Safari 10.1, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Safari throws a syntax error.Safari on iOS: Before Safari iOS 10.3, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Safari throws a syntax error.Samsung Internet: Before Samsung Internet 2.0, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Samsung Internet throws a syntax error.WebView Android: Before WebView 4.4.3, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then WebView throws a syntax error.WebView on iOS: Before Safari iOS 10.3, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Safari throws a syntax error. |
| api.MutationObserver.takeRecords π | Firefox | 7/17/2012 | Safari | 7/25/2012 | 8 | |
| api.MutationRecord π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationRecord.addedNodes π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationRecord.attributeName π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationRecord.attributeNamespace π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationRecord.nextSibling π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationRecord.oldValue π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationRecord.previousSibling π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationRecord.removedNodes π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationRecord.target π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.MutationRecord.type π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | |
| api.NamedNodeMap π | Safari | 6/23/2003 | Firefox | 12/1/2014 | 4179 | |
| api.NamedNodeMap.getNamedItem π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NamedNodeMap.getNamedItemNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NamedNodeMap.item π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NamedNodeMap.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NamedNodeMap.removeNamedItem π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NamedNodeMap.removeNamedItemNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NamedNodeMap.setNamedItem π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NamedNodeMap.setNamedItemNS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NavigationPreloadManager π | Safari | 3/14/2022 | Firefox | 4/5/2022 | 22 | |
| api.NavigationPreloadManager.disable π | Safari | 3/14/2022 | Firefox | 4/5/2022 | 22 | |
| api.NavigationPreloadManager.enable π | Safari | 3/14/2022 | Firefox | 4/5/2022 | 22 | |
| api.NavigationPreloadManager.getState π | Safari | 3/14/2022 | Firefox | 4/5/2022 | 22 | |
| api.NavigationPreloadManager.setHeaderValue π | Safari | 3/14/2022 | Firefox | 4/5/2022 | 22 | |
| api.Navigator π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.appCodeName π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.appName π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.appVersion π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.canShare π | Safari | 9/16/2020 | Firefox | 1/11/2022 | 482 | Chrome: Only supported on ChromeOS and Windows, see bug 40542648 and bug 40729163.Edge: Only supported on Windows.Opera: Only supported on ChromeOS and Windows, see bug 40542648 and bug 40729163. |
| api.Navigator.clipboard π | Firefox | 10/23/2018 | Safari | 3/24/2020 | 518 | |
| api.Navigator.cookieEnabled π | Firefox | 11/9/2004 | Safari | 9/16/2024 | 7251 | Firefox: Before Firefox 8, navigator.cookieEnabled would report the wrong result if a site exception was in place for the page on which the check was performed. This has been fixed.Firefox for Android: Before Firefox for Android 8, navigator.cookieEnabled would report the wrong result if a site exception was in place for the page on which the check was performed. This has been fixed.Internet Explorer: navigator.cookieEnabled returns true even if the browser is set to block cookies (for example, if the page is in the Restricted sites security zone).Safari: Returns true even if the browser is set to block cookies if navigator.cookieEnabled is invoked inside a third-party iframe)Safari on iOS: Returns true even if the browser is set to block cookies if navigator.cookieEnabled is invoked inside a third-party iframe)WebView on iOS: Returns true even if the browser is set to block cookies if navigator.cookieEnabled is invoked inside a third-party iframe) |
| api.Navigator.credentials π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | |
| api.Navigator.geolocation π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| api.Navigator.geolocation.secure_context_required | Safari | 9/20/2016 | Firefox | 8/8/2017 | 322 | |
| api.Navigator.getGamepads π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.Navigator.hardwareConcurrency π | Firefox | 8/2/2016 | Safari | 3/14/2022 | 2050 | Safari: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.Safari on iOS: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.WebView on iOS: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381. |
| api.Navigator.javaEnabled π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.language π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 4, this property's value was also part of the user agent string, as reported by navigator.userAgent. Starting in Firefox 5, this property's value is based on the value of the Accept-Language HTTP header.Internet Explorer: Closest available (non-standard) properties are userLanguage and browserLanguage. |
| api.Navigator.languages π | Firefox | 9/2/2014 | Safari | 3/27/2017 | 937 | Chrome: Before Chrome 65, navigator.languages[0] is not guaranteed to equal navigator.language.Chrome Android: Before Chrome Android 65, navigator.languages[0] is not guaranteed to equal navigator.language.Firefox: In Firefox, the navigator.languages property's value is taken from the intl.accept_languages preference.Firefox for Android: In Firefox for Android, the navigator.languages property's value is taken from the intl.accept_languages preference.Internet Explorer: Closest available (non-standard) properties are userLanguage and browserLanguage.Quest Browser: Before Quest Browser 5.0, navigator.languages[0] is not guaranteed to equal navigator.language.WebView Android: Before version 65, navigator.languages[0] is not guaranteed to equal navigator.language. |
| api.Navigator.locks π | Firefox | 1/11/2022 | Safari | 3/14/2022 | 62 | |
| api.Navigator.maxTouchPoints π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.Navigator.mediaCapabilities π | Firefox | 10/23/2018 | Safari | 9/19/2019 | 331 | |
| api.Navigator.mediaDevices π | Firefox | 2/24/2015 | Safari | 9/19/2017 | 938 | |
| api.Navigator.mediaDevices.secure_context_required | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.Navigator.mediaSession π | Firefox | 10/20/2020 | Safari | 9/20/2021 | 335 | |
| api.Navigator.mimeTypes π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.onLine π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | Chrome: Earlier versions of Chrome incorrectly return true when a tab is first opened, but it starts reporting the correct connectivity status after the first network event. Windows: 11, macOS: 14, ChromeOS: 13, Linux: Always returns true. For history, see bug 40530968.Firefox: Since Firefox 4 the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity. Since Firefox 41, on OS X and Windows, the returned values follow the actual network connectivity, unless 'Work offline' mode is selected (where it will always return false).Internet Explorer: in Internet Explorer 8 'online' and 'offline' events are raised on the document.body; under IE 9 they are raised on both document.body and window.Opera: From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity.Opera Android: From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity.WebView Android: Can incorrectly return true, see bug 41369933. |
| api.Navigator.pdfViewerEnabled π | Firefox | 4/5/2022 | Safari | 3/27/2023 | 356 | |
| api.Navigator.permissions π | Firefox | 4/26/2016 | Safari | 9/12/2022 | 2330 | |
| api.Navigator.platform π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 69, platform would report running on a 32-bit CPU if running the 32-bit version of Firefox on a 64-bit system.Firefox: You can override the value returned by platform by setting the preference general.platform.override to the string you wish to be returned instead. |
| api.Navigator.plugins π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.product π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.productSub π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Always returns 20030107.Chrome Android: Always returns 20030107.Edge: Always returns 20030107.Quest Browser: Always returns 20030107.Opera: Always returns 20030107.Opera Android: Always returns 20030107.Safari: Always returns 20030107.Safari on iOS: Always returns 20030107.Samsung Internet: Always returns 20030107.WebView Android: Always returns 20030107.WebView on iOS: Always returns 20030107. |
| api.Navigator.requestMediaKeySystemAccess π | Firefox | 5/12/2015 | Safari | 3/25/2019 | 1413 | Chrome: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Chrome: The function does not exist in insecure contexts. This was not enforced until Chrome 58.Chrome Android: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Chrome Android: The function does not exist in insecure contexts. This was not enforced until Chrome Android 58.Firefox: Starting in Firefox 55, if neither audioCapabilities nor videoCapabilities is specified in supportedConfigurations, a warning is output to the web console.Firefox: In addition, starting in Firefox 55, if in supportedConfigurations, either audioCapabilities's or videoCapabilities's contentType value doesn't specify a "codecs" substring to define allowed codecs within the media wrapper, a warning is output to the web console. See note below table for example and correction.Firefox: In the future, if neither audioCapabilities nor videoCapabilities is specified in the supportedConfigurations, a NotSupported exception will be thrown.Firefox for Android: Starting in Firefox for Android 55, if neither audioCapabilities nor videoCapabilities is specified in supportedConfigurations, a warning is output to the web console.Firefox for Android: In addition, starting in Firefox for Android 55, if in supportedConfigurations, either audioCapabilities's or videoCapabilities's contentType value doesn't specify a "codecs" substring to define allowed codecs within the media wrapper, a warning is output to the web console. See note below table for example and correction.Firefox for Android: In the future, if neither audioCapabilities nor videoCapabilities is specified in the supportedConfigurations, a NotSupported exception will be thrown.Quest Browser: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Quest Browser: The function does not exist in insecure contexts. This was not enforced until Quest Browser 5.0.Opera: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Opera: The function does not exist in insecure contexts. This was not enforced until Opera 45.Opera Android: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Opera Android: The function does not exist in insecure contexts. This was not enforced until Opera 45.Samsung Internet: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Samsung Internet: The function does not exist in insecure contexts. This was not enforced until Samsung Internet 7.0.WebView Android: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.WebView Android: The function does not exist in insecure contexts. This was not enforced until version 58. |
| api.Navigator.sendBeacon π | Firefox | 7/22/2014 | Safari | 4/12/2018 | 1360 | Chrome: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Chrome Android: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Quest Browser: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Opera: Starting in Opera 46, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Opera Android: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Samsung Internet: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.WebView Android: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600. |
| api.Navigator.serviceWorker π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | Firefox: In Firefox private windows, the serviceWorker object is undefined. See bug 1320796.Firefox for Android: In Firefox for Android private windows, the serviceWorker object is undefined. See bug 1320796. |
| api.Navigator.share π | Safari | 3/25/2019 | Firefox | 12/10/2019 | 260 | Chrome: Only supported on ChromeOS and Windows, see bug 40542648 and bug 40729163.Edge: Only supported on Windows.Opera: Only supported on ChromeOS and Windows, see bug 40542648 and bug 40729163. |
| api.Navigator.share.data_text_parameter π | Firefox | 12/10/2019 | Safari | 9/16/2020 | 281 | |
| api.Navigator.storage π | Firefox | 11/14/2017 | Safari | 12/13/2021 | 1490 | |
| api.Navigator.userActivation π | Safari | 3/27/2023 | Firefox | 11/21/2023 | 239 | |
| api.Navigator.userAgent π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.vendor π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Navigator.vendorSub π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Navigator.wakeLock π | Safari | 3/27/2023 | Firefox | 5/14/2024 | 414 | Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545. |
| api.Navigator.webdriver π | Safari | 3/27/2017 | Firefox | 5/9/2018 | 408 | |
| api.Node π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Chrome Android: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Quest Browser: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Opera: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Opera Android: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Safari: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Safari on iOS: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Samsung Internet: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.WebView on iOS: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget. |
| api.Node.appendChild π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| api.Node.baseURI π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| api.Node.childNodes π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| api.Node.cloneNode π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| api.Node.compareDocumentPosition π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Internet Explorer: Only supports contains for elements |
| api.Node.contains π | Safari | 10/24/2003 | Firefox | 12/20/2011 | 2979 | Internet Explorer: Only supported for HTMLElement, not all Node objects. |
| api.Node.firstChild π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Node.getRootNode π | Safari | 3/27/2017 | Firefox | 4/19/2017 | 23 | |
| api.Node.hasChildNodes π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Node.insertBefore π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| api.Node.isConnected π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| api.Node.isDefaultNamespace π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Node.isEqualNode π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Node.isSameNode π | Safari | 10/26/2007 | Firefox | 8/2/2016 | 3203 | |
| api.Node.lastChild π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Node.lookupNamespaceURI π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Node.lookupPrefix π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Node.nextSibling π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| api.Node.nodeName π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Node.nodeType π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| api.Node.nodeValue π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Node.normalize π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Node.ownerDocument π | Safari | 6/23/2003 | Firefox | 12/20/2011 | 3102 | Firefox: The ownerDocument of doctype nodes (that is, nodes for which Node.nodeType is Node.DOCUMENT_TYPE_NODE or 10) is null.Firefox for Android: The ownerDocument of doctype nodes (that is, nodes for which Node.nodeType is Node.DOCUMENT_TYPE_NODE or 10) is null. |
| api.Node.parentElement π | Safari | 10/24/2003 | Firefox | 12/20/2011 | 2979 | Internet Explorer: Only supported on Element.Opera: Before Opera 15, this feature was only supported on Element.Opera Android: Before Opera Android 14, this feature was only supported on Element. |
| api.Node.parentNode π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| api.Node.previousSibling π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Node.removeChild π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| api.Node.replaceChild π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| api.Node.selectstart_event π | Safari | 4/15/2005 | Firefox | 3/7/2017 | 4344 | |
| api.Node.textContent π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.NodeIterator π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| api.NodeIterator.filter π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| api.NodeIterator.nextNode π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| api.NodeIterator.pointerBeforeReferenceNode π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| api.NodeIterator.previousNode π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| api.NodeIterator.referenceNode π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| api.NodeIterator.root π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| api.NodeIterator.whatToShow π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| api.NodeList π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NodeList.@@iterator π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | |
| api.NodeList.entries | Safari | 9/20/2016 | Firefox | 11/15/2016 | 56 | |
| api.NodeList.forEach π | Safari | 9/20/2016 | Firefox | 11/15/2016 | 56 | |
| api.NodeList.item π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NodeList.keys | Safari | 9/20/2016 | Firefox | 11/15/2016 | 56 | |
| api.NodeList.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.NodeList.values | Safari | 9/20/2016 | Firefox | 11/15/2016 | 56 | |
| api.Notification π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | Chrome: Starting in Chrome 49, notifications do not work in incognito mode.Chrome: Before Chrome 42, service worker additions were not supported.Chrome Android: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Quest Browser: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Opera: Starting in Opera 36, notifications do not work in incognito mode.Opera: Before Opera 29, service worker additions were not supported.Opera Android: Notifications in Opera for Android are only available through service workers. To show notifications on Android, see ServiceWorkerRegistration.showNotification().Opera Android: Starting in Opera for Android 36, notifications do not work in incognito mode.Safari on iOS: The Notification interface is undefined, unless the page is a web app saved to the home screen. The app's manifest must have a non-default display value.Safari on iOS: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Samsung Internet: Notifications in Samsung Internet are only available through service workers. To show notifications on Android, see ServiceWorkerRegistration.showNotification().Samsung Internet: Starting in Samsung Internet 5.0, notifications do not work in incognito mode. |
| api.Notification.Notification π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | Chrome Android: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Chrome Android: This constructor always throws a TypeError exception.Quest Browser: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Quest Browser: This constructor always throws a TypeError exception.Opera Android: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Opera Android: This constructor always throws a TypeError exception.Safari on iOS: This constructor throws a ReferenceError exception, unless the page is a web app saved to the home screen. The app's manifest must have a non-default display value.Safari on iOS: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Samsung Internet: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Samsung Internet: This constructor always throws a TypeError exception. |
| api.Notification.body π | Firefox | 12/10/2013 | Safari | 9/19/2017 | 1379 | |
| api.Notification.click_event π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | |
| api.Notification.close π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | |
| api.Notification.close_event π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | |
| api.Notification.data π | Firefox | 12/1/2014 | Safari | 9/12/2022 | 2842 | |
| api.Notification.dir π | Safari | 10/22/2013 | Firefox | 12/10/2013 | 49 | |
| api.Notification.error_event π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | |
| api.Notification.lang π | Firefox | 12/10/2013 | Safari | 9/19/2017 | 1379 | |
| api.Notification.permission_static π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | Safari on iOS: The parent Notification interface is undefined unless the page is a web app saved to the home screen. The app's manifest must have a non-default display value. |
| api.Notification.requestPermission_static π | Firefox | 6/25/2013 | Safari | 9/20/2021 | 3009 | Firefox: From Firefox 70 onwards, cannot be called from a cross-origin iframe.Firefox: From Firefox 72 onwards, can only be called in response to a user gesture such as a click event.Firefox for Android: From Firefox Android 79 onwards, cannot be called from a cross-origin iframe.Firefox for Android: From Firefox Android 79 onwards, can only be called in response to a user gesture such as a click event.Safari: Only supported the deprecated callback syntax.Safari on iOS: The parent Notification interface is undefined unless the page is a web app saved to the home screen. The app's manifest must have a non-default display value. |
| api.Notification.requestPermission_static.returns_promise | Firefox | 4/26/2016 | Safari | 9/20/2021 | 1973 | |
| api.Notification.show_event π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | |
| api.Notification.silent π | Safari | 7/24/2023 | Firefox | 10/29/2024 | 463 | |
| api.Notification.title π | Firefox | 12/10/2013 | Safari | 9/19/2017 | 1379 | |
| api.NotificationEvent π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.NotificationEvent.NotificationEvent π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.OES_draw_buffers_indexed π | Safari | 9/12/2022 | Firefox | 12/13/2022 | 92 | |
| api.OES_draw_buffers_indexed.blendEquationSeparateiOES π | Safari | 9/12/2022 | Firefox | 12/13/2022 | 92 | |
| api.OES_draw_buffers_indexed.blendEquationiOES π | Safari | 9/12/2022 | Firefox | 12/13/2022 | 92 | |
| api.OES_draw_buffers_indexed.blendFuncSeparateiOES π | Safari | 9/12/2022 | Firefox | 12/13/2022 | 92 | |
| api.OES_draw_buffers_indexed.blendFunciOES π | Safari | 9/12/2022 | Firefox | 12/13/2022 | 92 | |
| api.OES_draw_buffers_indexed.colorMaskiOES π | Safari | 9/12/2022 | Firefox | 12/13/2022 | 92 | |
| api.OES_draw_buffers_indexed.disableiOES π | Safari | 9/12/2022 | Firefox | 12/13/2022 | 92 | |
| api.OES_draw_buffers_indexed.enableiOES π | Safari | 9/12/2022 | Firefox | 12/13/2022 | 92 | |
| api.OES_element_index_uint π | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | |
| api.OES_fbo_render_mipmap π | Firefox | 12/10/2019 | Safari | 4/26/2021 | 503 | |
| api.OES_standard_derivatives π | Firefox | 1/31/2012 | Safari | 10/16/2014 | 989 | |
| api.OES_texture_float π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | |
| api.OES_texture_float_linear π | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | Safari on iOS: Only supported on iPadOS.WebView on iOS: Only supported on iPadOS. |
| api.OES_texture_half_float π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| api.OES_texture_half_float_linear π | Firefox | 6/10/2014 | Safari | 10/16/2014 | 128 | |
| api.OES_vertex_array_object π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| api.OES_vertex_array_object.bindVertexArrayOES π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| api.OES_vertex_array_object.createVertexArrayOES π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| api.OES_vertex_array_object.deleteVertexArrayOES π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| api.OES_vertex_array_object.isVertexArrayOES π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| api.OfflineAudioCompletionEvent π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.OfflineAudioCompletionEvent.OfflineAudioCompletionEvent π | Firefox | 4/19/2017 | Safari | 9/16/2020 | 1246 | |
| api.OfflineAudioCompletionEvent.renderedBuffer π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.OfflineAudioContext π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.OfflineAudioContext.OfflineAudioContext π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.OfflineAudioContext.OfflineAudioContext.options_parameter | Firefox | 11/14/2017 | Safari | 4/26/2021 | 1259 | |
| api.OfflineAudioContext.complete_event π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.OfflineAudioContext.length π | Firefox | 9/20/2016 | Safari | 4/26/2021 | 1679 | |
| api.OfflineAudioContext.resume π | Firefox | 8/11/2015 | Safari | 9/30/2015 | 50 | Firefox: The method exists but always rejects with NotSupportedError. See bug 1265406.Firefox for Android: The method exists but always rejects with NotSupportedError. See bug 1265406. |
| api.OfflineAudioContext.startRendering π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.OfflineAudioContext.startRendering.returns_promise | Firefox | 3/31/2015 | Safari | 4/26/2021 | 2218 | |
| api.OffscreenCanvas π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvas.OffscreenCanvas π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvas.convertToBlob π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvas.getContext π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvas.getContext.2d_context | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvas.getContext.bitmaprenderer_context | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvas.getContext.webgl2_context | Firefox | 9/20/2022 | Safari | 9/18/2023 | 363 | |
| api.OffscreenCanvas.getContext.webgl_context | Firefox | 9/20/2022 | Safari | 9/18/2023 | 363 | |
| api.OffscreenCanvas.height π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvas.transferToImageBitmap π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvas.width π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.arc π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.arcTo π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.beginPath π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.bezierCurveTo π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.canvas π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.clearRect π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.clip π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.closePath π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.createConicGradient π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.createImageData π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.createLinearGradient π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.createPattern π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.createRadialGradient π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.direction π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.drawImage π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.ellipse π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.fill π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.fillRect π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.fillStyle π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.fillText π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.font π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.getImageData π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.getLineDash π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.getTransform π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.globalAlpha π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.globalCompositeOperation π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.imageSmoothingEnabled π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.isPointInPath π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.isPointInStroke π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.lineCap π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.lineDashOffset π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.lineJoin π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.lineTo π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.lineWidth π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.measureText π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.miterLimit π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.moveTo π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.putImageData π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.quadraticCurveTo π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.rect π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.reset π | Firefox | 5/9/2023 | Safari | 12/11/2023 | 216 | |
| api.OffscreenCanvasRenderingContext2D.resetTransform π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.restore π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.rotate π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.roundRect π | Safari | 3/27/2023 | Firefox | 4/11/2023 | 15 | |
| api.OffscreenCanvasRenderingContext2D.save π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.scale π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.setLineDash π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.setTransform π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.shadowBlur π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.shadowColor π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.shadowOffsetX π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.shadowOffsetY π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.stroke π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.strokeRect π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.strokeStyle π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.strokeText π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.textAlign π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.textBaseline π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.transform π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OffscreenCanvasRenderingContext2D.translate π | Firefox | 9/20/2022 | Safari | 3/27/2023 | 188 | |
| api.OscillatorNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.OscillatorNode.OscillatorNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.OscillatorNode.detune π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.OscillatorNode.frequency π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.OscillatorNode.setPeriodicWave π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| api.OscillatorNode.type π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PageTransitionEvent π | Firefox | 11/29/2005 | Safari | 6/7/2010 | 1651 | |
| api.PageTransitionEvent.PageTransitionEvent π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| api.PageTransitionEvent.persisted π | Safari | 6/7/2010 | Firefox | 3/13/2012 | 645 | Internet Explorer: The persisted property is known to be buggy in Internet Explorer. It is advised to check if window.performance.navigation.type == 2 as well. |
| api.PannerNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.PannerNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.PannerNode.coneInnerAngle π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.coneOuterAngle π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.coneOuterGain π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.distanceModel π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.maxDistance π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.orientationX π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.PannerNode.orientationY π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.PannerNode.orientationZ π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.PannerNode.panningModel π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.positionX π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.PannerNode.positionY π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.PannerNode.positionZ π | Firefox | 11/15/2016 | Safari | 4/26/2021 | 1623 | |
| api.PannerNode.refDistance π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.rolloffFactor π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.setOrientation π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.PannerNode.setPosition π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.Path2D π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.Path2D.Path2D π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | Edge: Before Edge 79, the constructor for Path2D objects does not support invocation with a string consisting of SVG path data. |
| api.Path2D.addPath π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| api.Path2D.arc π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.Path2D.arcTo π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.Path2D.bezierCurveTo π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.Path2D.closePath π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.Path2D.ellipse π | Safari | 9/30/2015 | Firefox | 8/2/2016 | 307 | |
| api.Path2D.lineTo π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.Path2D.moveTo π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.Path2D.quadraticCurveTo π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.Path2D.rect π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.Path2D.roundRect π | Safari | 9/12/2022 | Firefox | 4/11/2023 | 211 | |
| api.PaymentMethodChangeEvent π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.PaymentMethodChangeEvent.PaymentMethodChangeEvent π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.PaymentMethodChangeEvent.methodDetails π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.PaymentMethodChangeEvent.methodName π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.PaymentRequest π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.PaymentRequest π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.abort π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.canMakePayment π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.id π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.merchantvalidation_event | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.paymentmethodchange_event π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.PaymentRequest.shippingAddress | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.shippingOption | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.shippingType | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.shippingaddresschange_event | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.shippingoptionchange_event | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequest.show π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequestUpdateEvent π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequestUpdateEvent.PaymentRequestUpdateEvent π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentRequestUpdateEvent.updateWith π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.complete π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.details π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.methodName π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.payerEmail π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.payerName π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.payerPhone π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.payerdetailchange_event π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.PaymentResponse.requestId π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.retry π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.PaymentResponse.shippingAddress π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.shippingOption π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.PaymentResponse.toJSON | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| api.Performance π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | Node.js: Only available as an internal instance. |
| api.Performance.clearMarks π | Firefox | 5/12/2015 | Safari | 9/19/2017 | 861 | |
| api.Performance.clearMeasures π | Firefox | 5/12/2015 | Safari | 9/19/2017 | 861 | |
| api.Performance.clearResourceTimings π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.Performance.getEntries π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.Performance.getEntriesByName π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.Performance.getEntriesByType π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.Performance.mark π | Firefox | 5/12/2015 | Safari | 9/19/2017 | 861 | |
| api.Performance.mark.markOptions_parameter | Safari | 4/26/2021 | Firefox | 5/31/2022 | 400 | |
| api.Performance.mark.returns_performancemark | Safari | 4/26/2021 | Firefox | 5/31/2022 | 400 | |
| api.Performance.measure π | Firefox | 5/12/2015 | Safari | 9/19/2017 | 861 | |
| api.Performance.measure.measureOptions_parameter | Safari | 4/26/2021 | Firefox | 7/26/2022 | 456 | |
| api.Performance.measure.returns_performancemeasure | Safari | 4/26/2021 | Firefox | 7/26/2022 | 456 | |
| api.Performance.navigation π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.Performance.now π | Firefox | 8/28/2012 | Safari | 10/16/2014 | 779 | Firefox: In Firefox 57.0.4 the accuracy was reduced to 20 microseconds.Firefox: In Firefox 59 the accuracy was reduced to 2 milliseconds.Firefox: In Firefox 60 the accuracy was increased to 1 millisecond.Firefox for Android: In Firefox for Android 57.0.4 the accuracy was reduced to 20 microseconds.Firefox for Android: In Firefox for Android 59 the accuracy was reduced to 2 milliseconds.Firefox for Android: In Firefox for Android 60 the accuracy was increased to 1 millisecond. |
| api.Performance.resourcetimingbufferfull_event π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.Performance.setResourceTimingBufferSize π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.Performance.timeOrigin π | Firefox | 4/19/2017 | Safari | 9/20/2021 | 1615 | |
| api.Performance.timing π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | Node.js: Returns node specific timing object |
| api.Performance.toJSON π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | |
| api.PerformanceEntry π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | Node.js: Available as a part of the perf_hooks module. |
| api.PerformanceEntry.duration π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceEntry.entryType π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceEntry.name π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceEntry.startTime π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceEntry.toJSON π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceEntry.worker_support | Safari | 9/19/2017 | Firefox | 5/9/2018 | 232 | Node.js: Available as a part of the perf_hooks module. |
| api.PerformanceMark π | Firefox | 5/12/2015 | Safari | 9/19/2017 | 861 | Node.js: Available as a part of the perf_hooks module. |
| api.PerformanceMark.PerformanceMark π | Safari | 4/26/2021 | Firefox | 5/31/2022 | 400 | |
| api.PerformanceMark.detail π | Safari | 4/26/2021 | Firefox | 5/31/2022 | 400 | |
| api.PerformanceMeasure π | Firefox | 5/12/2015 | Safari | 9/19/2017 | 861 | Node.js: Available as a part of the perf_hooks module.Node.js: Only available as an internal instance, but can be accessed via getting performance entries. |
| api.PerformanceMeasure.detail π | Safari | 4/26/2021 | Firefox | 7/26/2022 | 456 | |
| api.PerformanceNavigation π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceNavigation.redirectCount π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceNavigation.toJSON π | Firefox | 10/29/2013 | Safari | 4/26/2021 | 2736 | Firefox: Before Firefox 70, this property could return incorrect values. See bug 1459711.Firefox for Android: Before Firefox for Android 79, this property could return incorrect values. See bug 1459711. |
| api.PerformanceNavigation.type π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | Firefox: Before Firefox 70, this property could return incorrect values. See bug 1459711.Firefox for Android: Before Firefox for Android 79, this property could return incorrect values. See bug 1459711. |
| api.PerformanceNavigationTiming π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.domComplete π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.domContentLoadedEventEnd π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.domContentLoadedEventStart π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.domInteractive π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.loadEventEnd π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.loadEventStart π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.redirectCount π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.toJSON π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.type π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.unloadEventEnd π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceNavigationTiming.unloadEventStart π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| api.PerformanceObserver π | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | Node.js: Available as a part of the perf_hooks module. |
| api.PerformanceObserver.PerformanceObserver π | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | |
| api.PerformanceObserver.disconnect π | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | |
| api.PerformanceObserver.observe π | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | |
| api.PerformanceObserver.supportedEntryTypes_static π | Firefox | 7/9/2019 | Safari | 9/19/2019 | 72 | |
| api.PerformanceObserver.takeRecords π | Firefox | 5/9/2018 | Safari | 9/20/2021 | 1230 | |
| api.PerformanceObserver.worker_support | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | |
| api.PerformanceObserverEntryList π | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | Node.js: Available as a part of the perf_hooks module.Node.js: Only available as an internal instance, but can be accessed via the first parameter of the PerformanceObserver constructor. |
| api.PerformanceObserverEntryList.getEntries π | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | |
| api.PerformanceObserverEntryList.getEntriesByName π | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | |
| api.PerformanceObserverEntryList.getEntriesByType π | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | |
| api.PerformancePaintTiming π | Firefox | 12/15/2020 | Safari | 4/26/2021 | 132 | |
| api.PerformancePaintTiming.first-contentful-paint π | Firefox | 12/15/2020 | Safari | 4/26/2021 | 132 | |
| api.PerformanceResourceTiming π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | Node.js: Available as a part of the perf_hooks module.Node.js: Available as a part of the perf_hooks module. |
| api.PerformanceResourceTiming.connectEnd π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.connectStart π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.decodedBodySize π | Firefox | 3/8/2016 | Safari | 3/27/2023 | 2575 | |
| api.PerformanceResourceTiming.domainLookupEnd π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.domainLookupStart π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.encodedBodySize π | Firefox | 3/8/2016 | Safari | 3/27/2023 | 2575 | |
| api.PerformanceResourceTiming.fetchStart π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.initiatorType π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | Node.js: Since v18.2.0, the value can be returned by toJSON(), but can not accessed via property getter. |
| api.PerformanceResourceTiming.nextHopProtocol π | Firefox | 3/8/2016 | Safari | 9/19/2017 | 560 | |
| api.PerformanceResourceTiming.redirectEnd π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.redirectStart π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.requestStart π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.responseEnd π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.responseStart π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | Chrome: Returns the time of the final response, even if an interim response is available.Chrome Android: Returns the time of the final response, even if an interim response is available.Opera: Returns the time of the final response, even if an interim response is available.Opera Android: Returns the time of the final response, even if an interim response is available.Samsung Internet: Returns the time of the final response, even if an interim response is available.WebView Android: Returns the time of the final response, even if an interim response is available. |
| api.PerformanceResourceTiming.secureConnectionStart π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.serverTiming π | Firefox | 6/26/2018 | Safari | 3/27/2023 | 1735 | |
| api.PerformanceResourceTiming.toJSON π | Firefox | 1/13/2015 | Safari | 9/19/2017 | 980 | |
| api.PerformanceResourceTiming.transferSize π | Firefox | 3/8/2016 | Safari | 3/27/2023 | 2575 | |
| api.PerformanceResourceTiming.workerStart π | Safari | 9/19/2017 | Firefox | 1/23/2018 | 126 | |
| api.PerformanceResourceTiming.worker_support | Firefox | 5/9/2018 | Safari | 9/17/2018 | 131 | |
| api.PerformanceServerTiming π | Firefox | 6/26/2018 | Safari | 3/27/2023 | 1735 | |
| api.PerformanceServerTiming.description π | Firefox | 6/26/2018 | Safari | 3/27/2023 | 1735 | |
| api.PerformanceServerTiming.duration π | Firefox | 6/26/2018 | Safari | 3/27/2023 | 1735 | |
| api.PerformanceServerTiming.name π | Firefox | 6/26/2018 | Safari | 3/27/2023 | 1735 | |
| api.PerformanceServerTiming.toJSON π | Firefox | 6/26/2018 | Safari | 3/27/2023 | 1735 | |
| api.PerformanceTiming π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.connectEnd π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.connectStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.domComplete π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.domContentLoadedEventEnd π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.domContentLoadedEventStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.domInteractive π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.domLoading π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.domainLookupEnd π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.domainLookupStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.fetchStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.loadEventEnd π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.loadEventStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.navigationStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.redirectEnd π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.redirectStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.requestStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.responseEnd π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.responseStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.secureConnectionStart π | Safari | 10/16/2014 | Firefox | 9/28/2017 | 1078 | |
| api.PerformanceTiming.toJSON π | Firefox | 10/29/2013 | Safari | 3/27/2017 | 1245 | |
| api.PerformanceTiming.unloadEventEnd π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PerformanceTiming.unloadEventStart π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | |
| api.PeriodicWave π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| api.PeriodicWave.PeriodicWave π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.PermissionStatus π | Firefox | 4/26/2016 | Safari | 9/12/2022 | 2330 | |
| api.PermissionStatus.change_event π | Firefox | 4/26/2016 | Safari | 3/27/2023 | 2526 | |
| api.PermissionStatus.name π | Firefox | 10/5/2021 | Safari | 9/12/2022 | 342 | |
| api.PermissionStatus.state π | Firefox | 4/26/2016 | Safari | 9/12/2022 | 2330 | |
| api.Permissions π | Firefox | 4/26/2016 | Safari | 9/12/2022 | 2330 | |
| api.Permissions.permission_camera | Safari | 9/12/2022 | Firefox | 10/29/2024 | 778 | |
| api.Permissions.permission_geolocation | Firefox | 4/26/2016 | Safari | 9/12/2022 | 2330 | |
| api.Permissions.permission_microphone | Safari | 9/12/2022 | Firefox | 10/29/2024 | 778 | |
| api.Permissions.permission_notifications | Firefox | 4/26/2016 | Safari | 3/27/2023 | 2526 | Firefox: Alias for the push permission (returns the same value).Firefox for Android: Alias for the push permission (returns the same value). |
| api.Permissions.permission_push | Firefox | 4/26/2016 | Safari | 5/18/2023 | 2578 | Firefox: Alias for the notifications permission (returns the same value).Firefox for Android: Alias for the notifications permission (returns the same value). |
| api.Permissions.query π | Firefox | 4/26/2016 | Safari | 9/12/2022 | 2330 | |
| api.Plugin π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Plugin.description π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Plugin.filename π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Plugin.item π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Chrome: Starting with version 59, method parameters are required instead of optional.Chrome Android: Starting with version 59, method parameters are required instead of optional.Quest Browser: Starting with version 5.0, method parameters are required instead of optional.Samsung Internet: Starting with Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Starting with version 59, method parameters are required instead of optional. |
| api.Plugin.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Plugin.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Plugin.namedItem π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Chrome: Starting with version 59, method parameters are required instead of optional.Chrome Android: Starting with version 59, method parameters are required instead of optional.Quest Browser: Starting with version 5.0, method parameters are required instead of optional.Samsung Internet: Starting with Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Starting with version 59, method parameters are required instead of optional. |
| api.PluginArray π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.PluginArray.item π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Chrome: Since Chrome 59, method parameters are required instead of optional.Chrome Android: Since Chrome Android 59, method parameters are required instead of optional.Edge: Since Edge 79, method parameters are required instead of optional.Quest Browser: Since Quest Browser 5.0, method parameters are required instead of optional.Opera: Since Opera 46, method parameters are required instead of optional.Opera Android: Since Opera Android 43, method parameters are required instead of optional.Samsung Internet: Since Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Since WebView 59, method parameters are required instead of optional. |
| api.PluginArray.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.PluginArray.namedItem π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Chrome: Since Chrome 59, method parameters are required instead of optional.Chrome Android: Since Chrome Android 59, method parameters are required instead of optional.Edge: Since Edge 79, method parameters are required instead of optional.Quest Browser: Since Quest Browser 5.0, method parameters are required instead of optional.Opera: Since Opera 46, method parameters are required instead of optional.Opera Android: Since Opera Android 43, method parameters are required instead of optional.Samsung Internet: Since Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Since WebView 59, method parameters are required instead of optional. |
| api.PluginArray.refresh π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Since Chrome 59, method parameters are required instead of optional.Chrome Android: Since Chrome Android 59, method parameters are required instead of optional.Edge: Since Edge 79, method parameters are required instead of optional.Quest Browser: Since Quest Browser 5.0, method parameters are required instead of optional.Opera: Since Opera 46, method parameters are required instead of optional.Opera Android: Since Opera Android 43, method parameters are required instead of optional.Samsung Internet: Since Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Since WebView Android 59, method parameters are required instead of optional. |
| api.PointerEvent π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | Internet Explorer: See MSDN Pointer events updates. |
| api.PointerEvent.PointerEvent π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | Internet Explorer: See MSDN Pointer events updates. |
| api.PointerEvent.PointerEvent.options_altitudeAngle_parameter | Firefox | 10/1/2024 | Safari | 12/11/2024 | 71 | |
| api.PointerEvent.PointerEvent.options_azimuthAngle_parameter | Firefox | 10/1/2024 | Safari | 12/11/2024 | 71 | |
| api.PointerEvent.altitudeAngle π | Firefox | 10/1/2024 | Safari | 12/11/2024 | 71 | |
| api.PointerEvent.azimuthAngle π | Firefox | 10/1/2024 | Safari | 12/11/2024 | 71 | |
| api.PointerEvent.getCoalescedEvents π | Firefox | 3/13/2018 | Safari | 12/11/2024 | 2465 | Firefox for Android: The method always returns an empty array, regardless of the user's actions. |
| api.PointerEvent.getPredictedEvents π | Firefox | 6/1/2021 | Safari | 12/11/2024 | 1289 | |
| api.PointerEvent.height π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | Internet Explorer: Returns values in screen pixels instead of CSS document pixels. |
| api.PointerEvent.isPrimary π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.PointerEvent.pointerId π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.PointerEvent.pointerType π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | Internet Explorer: Returns an integer enumeration instead of a string. |
| api.PointerEvent.pressure π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | Internet Explorer: Returns 0 instead of 0.5 on hardware that doesn't support pressure. |
| api.PointerEvent.tangentialPressure π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.PointerEvent.tiltX π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.PointerEvent.tiltY π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.PointerEvent.twist π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | |
| api.PointerEvent.width π | Firefox | 3/13/2018 | Safari | 9/19/2019 | 555 | Internet Explorer: Returns values in screen pixels instead of CSS document pixels. |
| api.PopStateEvent π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.PopStateEvent.PopStateEvent π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| api.PopStateEvent.state π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.ProcessingInstruction π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.ProcessingInstruction.sheet π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.ProcessingInstruction.target π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.ProgressEvent π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.ProgressEvent.ProgressEvent π | Safari | 7/25/2012 | Firefox | 1/8/2013 | 167 | |
| api.ProgressEvent.lengthComputable π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.ProgressEvent.loaded π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.ProgressEvent.total π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| api.ProgressEvent.worker_support | Safari | 9/20/2016 | Firefox | 6/13/2017 | 266 | Chrome: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Chrome Android: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Edge: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Quest Browser: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Opera: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Opera Android: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Samsung Internet: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.WebView Android: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431. |
| api.PromiseRejectionEvent π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.PromiseRejectionEvent.PromiseRejectionEvent π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.PromiseRejectionEvent.promise π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.PromiseRejectionEvent.reason π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.PublicKeyCredential π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.PublicKeyCredential.authenticatorAttachment π | Safari | 5/16/2022 | Firefox | 11/21/2023 | 554 | |
| api.PublicKeyCredential.getClientCapabilities_static π | Safari | 3/5/2024 | Firefox | 2/4/2025 | 336 | |
| api.PublicKeyCredential.getClientExtensionResults π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.PublicKeyCredential.isConditionalMediationAvailable_static π | Safari | 9/12/2022 | Firefox | 10/24/2023 | 407 | |
| api.PublicKeyCredential.isUserVerifyingPlatformAuthenticatorAvailable_static π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.PublicKeyCredential.rawId π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.PublicKeyCredential.response π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens. |
| api.PushEvent π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushEvent.PushEvent π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushEvent.data π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushManager π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushManager.getSubscription π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushManager.permissionState π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushManager.subscribe π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Chrome: The options parameter with a applicationServerKey value is required.Chrome Android: The options parameter with a applicationServerKey value is required.Edge: The options parameter with a applicationServerKey value is required.Firefox: From Firefox 72 onwards, can only be called in response to a user gesture such as a click event.Firefox for Android: From Firefox Android 79 onwards, can only be called in response to a user gesture such as a click event.Quest Browser: The options parameter with a applicationServerKey value is required.Opera Android: The options parameter with a applicationServerKey value is required.Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.Samsung Internet: The options parameter with a applicationServerKey value is required.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushManager.supportedContentEncodings_static π | Safari | 9/12/2022 | Firefox | 1/7/2025 | 848 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushMessageData π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushMessageData.arrayBuffer π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushMessageData.blob π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushMessageData.bytes π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | |
| api.PushMessageData.json π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushMessageData.text π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushSubscription π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushSubscription.endpoint π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushSubscription.expirationTime π | Firefox | 1/11/2022 | Safari | 9/12/2022 | 244 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushSubscription.getKey π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushSubscription.options π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushSubscription.toJSON π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushSubscription.unsubscribe π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushSubscriptionOptions π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.PushSubscriptionOptions.applicationServerKey π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.RTCCertificate π | Firefox | 11/3/2015 | Safari | 3/25/2019 | 1238 | |
| api.RTCCertificate.expires π | Firefox | 11/3/2015 | Safari | 3/25/2019 | 1238 | |
| api.RTCDTMFSender π | Firefox | 3/7/2017 | Safari | 3/24/2020 | 1113 | |
| api.RTCDTMFSender.canInsertDTMF π | Safari | 3/24/2020 | Firefox | 8/6/2024 | 1596 | |
| api.RTCDTMFSender.insertDTMF π | Firefox | 3/7/2017 | Safari | 3/24/2020 | 1113 | |
| api.RTCDTMFSender.toneBuffer π | Firefox | 3/7/2017 | Safari | 3/24/2020 | 1113 | |
| api.RTCDTMFSender.tonechange_event π | Firefox | 3/7/2017 | Safari | 3/24/2020 | 1113 | |
| api.RTCDTMFToneChangeEvent π | Firefox | 3/7/2017 | Safari | 3/24/2020 | 1113 | |
| api.RTCDTMFToneChangeEvent.RTCDTMFToneChangeEvent π | Firefox | 3/7/2017 | Safari | 3/24/2020 | 1113 | |
| api.RTCDTMFToneChangeEvent.tone π | Firefox | 3/7/2017 | Safari | 3/24/2020 | 1113 | |
| api.RTCDataChannel π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.binaryType π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.binaryType.arraybuffer_value | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.binaryType.blob_value | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.bufferedAmount π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.bufferedAmountLowThreshold π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.RTCDataChannel.bufferedamountlow_event π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | Chrome: The default for rtcpMuxPolicy is require.Chrome Android: The default for rtcpMuxPolicy is require.Edge: The default for rtcpMuxPolicy is require.Quest Browser: The default for rtcpMuxPolicy is require.Opera: The default for rtcpMuxPolicy is require.Opera Android: The default for rtcpMuxPolicy is require.Samsung Internet: The default for rtcpMuxPolicy is require.WebView Android: The default for rtcpMuxPolicy is require. |
| api.RTCDataChannel.close π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.close_event π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.error_event π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.id π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.label π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.maxPacketLifeTime π | Safari | 9/19/2017 | Firefox | 9/5/2018 | 351 | |
| api.RTCDataChannel.maxRetransmits π | Safari | 9/19/2017 | Firefox | 9/5/2018 | 351 | |
| api.RTCDataChannel.message_event π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.negotiated π | Safari | 9/19/2017 | Firefox | 7/9/2019 | 658 | |
| api.RTCDataChannel.open_event π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.ordered π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.protocol π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.readyState π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannel.send π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannelEvent π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannelEvent.RTCDataChannelEvent π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDataChannelEvent.channel π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCDtlsTransport π | Firefox | 10/20/2020 | Safari | 3/14/2022 | 510 | |
| api.RTCDtlsTransport.iceTransport π | Safari | 3/14/2022 | Firefox | 4/16/2024 | 764 | |
| api.RTCDtlsTransport.state π | Firefox | 10/20/2020 | Safari | 3/14/2022 | 510 | |
| api.RTCDtlsTransport.statechange_event | Firefox | 10/20/2020 | Safari | 3/14/2022 | 510 | |
| api.RTCEncodedAudioFrame π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCEncodedAudioFrame.data π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCEncodedAudioFrame.getMetadata π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCEncodedAudioFrame.timestamp | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCEncodedVideoFrame π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCEncodedVideoFrame.data π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCEncodedVideoFrame.getMetadata π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCEncodedVideoFrame.timestamp | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCEncodedVideoFrame.type π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCIceCandidate π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.RTCIceCandidate.RTCIceCandidate π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | Firefox: Before Firefox 68, the constructor's candidateInfo parameter is required and the candidateInfo object must have a candidate property.Firefox: Before Firefox 68, the constructor's candidateInfo parameter is required and the candidateInfo object must have a candidate property.Firefox for Android: Before Firefox 68, the constructor's candidateInfo parameter is required and the candidateInfo object must have a candidate property.Firefox for Android: Before Firefox 68, the constructor's candidateInfo parameter is required and the candidateInfo object must have a candidate property. |
| api.RTCIceCandidate.address π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.candidate π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | Firefox: Before Firefox 126, the property was not read-only.Firefox for Android: Before Firefox 126, the property was not read-only. |
| api.RTCIceCandidate.component π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.foundation π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.port π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.priority π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.protocol π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.relatedAddress π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.relatedPort π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.sdpMLineIndex π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | Firefox: Before Firefox 126, the property was not read-only.Firefox for Android: Before Firefox 126, the property was not read-only. |
| api.RTCIceCandidate.sdpMid π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | Firefox: Before Firefox 126, the property was not read-only.Firefox for Android: Before Firefox 126, the property was not read-only. |
| api.RTCIceCandidate.tcpType π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.toJSON π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCIceCandidate.type π | Safari | 4/26/2021 | Firefox | 5/14/2024 | 1114 | |
| api.RTCIceCandidate.usernameFragment π | Firefox | 5/21/2019 | Safari | 4/26/2021 | 706 | Firefox: Before Firefox 126, the property was not read-only.Firefox for Android: Before Firefox for Android 126, the property was not read-only. |
| api.RTCIceTransport π | Safari | 9/19/2017 | Firefox | 4/16/2024 | 2401 | |
| api.RTCIceTransport.gatheringState π | Safari | 9/19/2017 | Firefox | 4/16/2024 | 2401 | |
| api.RTCIceTransport.gatheringstatechange_event π | Safari | 3/14/2022 | Firefox | 4/16/2024 | 764 | |
| api.RTCIceTransport.state π | Safari | 9/19/2017 | Firefox | 4/16/2024 | 2401 | |
| api.RTCIceTransport.statechange_event π | Safari | 3/14/2022 | Firefox | 4/16/2024 | 764 | |
| api.RTCPeerConnection π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.RTCPeerConnection.RTCPeerConnection π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | Chrome: Before Chrome 63, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Chrome Android: Before Chrome Android 63, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Quest Browser: Before Quest Browser 5.0, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Opera: Before Opera 50, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Opera Android: Before Opera Android 46, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Samsung Internet: Before Samsung Internet 8.0, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".WebView Android: Before WebView Android 63, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required". |
| api.RTCPeerConnection.RTCPeerConnection.configuration_bundlePolicy_parameter π | Firefox | 11/3/2015 | Safari | 9/19/2017 | 686 | |
| api.RTCPeerConnection.RTCPeerConnection.configuration_certificates_parameter π | Firefox | 11/3/2015 | Safari | 3/25/2019 | 1238 | |
| api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.credential_parameter π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.urls_parameter π | Firefox | 3/31/2015 | Safari | 9/19/2017 | 903 | |
| api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.username_parameter π | Firefox | 8/6/2013 | Safari | 9/19/2017 | 1505 | |
| api.RTCPeerConnection.RTCPeerConnection.configuration_iceTransportPolicy_parameter π | Firefox | 11/3/2015 | Safari | 9/19/2017 | 686 | |
| api.RTCPeerConnection.addIceCandidate π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | Firefox: Starting in Firefox 68, the candidate parameter is optional when calling addIceCandidate(). A null value for candidate indicates no more candidates will be sent, while an empty candidate string indicates that no more candidates will be sent for the current generation of candidates.Firefox for Android: Starting in Firefox 68, the candidate parameter is optional when calling addIceCandidate(). A null value for candidate indicates no more candidates will be sent, while an empty candidate string indicates that no more candidates will be sent for the current generation of candidates. |
| api.RTCPeerConnection.addIceCandidate.returns_promise | Firefox | 3/31/2015 | Safari | 9/19/2017 | 903 | |
| api.RTCPeerConnection.addTrack π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.addTransceiver π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCPeerConnection.addTransceiver.init_direction_parameter | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCPeerConnection.addTransceiver.init_sendEncodings_parameter | Safari | 4/26/2021 | Firefox | 2/14/2023 | 659 | |
| api.RTCPeerConnection.addTransceiver.init_streams_parameter | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | |
| api.RTCPeerConnection.canTrickleIceCandidates π | Firefox | 6/7/2016 | Safari | 3/14/2022 | 2106 | |
| api.RTCPeerConnection.close π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.connectionState π | Safari | 9/19/2017 | Firefox | 5/9/2023 | 2058 | |
| api.RTCPeerConnection.connectionstatechange_event π | Safari | 9/19/2017 | Firefox | 5/9/2023 | 2058 | |
| api.RTCPeerConnection.createAnswer π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.createAnswer.returns_promise | Firefox | 3/31/2015 | Safari | 9/19/2017 | 903 | |
| api.RTCPeerConnection.createDataChannel π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.createOffer π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.createOffer.returns_promise | Firefox | 3/31/2015 | Safari | 9/19/2017 | 903 | |
| api.RTCPeerConnection.currentLocalDescription π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.currentRemoteDescription π | Safari | 9/19/2017 | Firefox | 11/14/2017 | 56 | |
| api.RTCPeerConnection.datachannel_event π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.generateCertificate_static π | Firefox | 6/25/2013 | Safari | 3/25/2019 | 2099 | |
| api.RTCPeerConnection.getConfiguration π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.getReceivers π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.RTCPeerConnection.getSenders π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.RTCPeerConnection.getStats π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCPeerConnection.getStats.returns_promise | Firefox | 3/31/2015 | Safari | 9/19/2017 | 903 | |
| api.RTCPeerConnection.getStats.selector_parameter | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCPeerConnection.getTransceivers π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCPeerConnection.iceConnectionState π | Firefox | 9/17/2013 | Safari | 9/19/2017 | 1463 | |
| api.RTCPeerConnection.iceGatheringState π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.icecandidate_event π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.iceconnectionstatechange_event π | Firefox | 9/17/2013 | Safari | 9/19/2017 | 1463 | |
| api.RTCPeerConnection.icegatheringstatechange_event π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.localDescription π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.negotiationneeded_event π | Firefox | 5/12/2015 | Safari | 9/19/2017 | 861 | Firefox: Although the onnegotiationneeded property is supported, the negotiationneeded event is never fired.Firefox for Android: Although the onnegotiationneeded property is supported, the negotiationneeded event is never fired. |
| api.RTCPeerConnection.pendingLocalDescription π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.pendingRemoteDescription π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.remoteDescription π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.removeTrack π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.restartIce π | Firefox | 10/22/2019 | Safari | 4/26/2021 | 552 | |
| api.RTCPeerConnection.sctp π | Safari | 3/14/2022 | Firefox | 5/9/2023 | 421 | |
| api.RTCPeerConnection.setConfiguration π | Safari | 9/19/2017 | Firefox | 4/5/2022 | 1659 | |
| api.RTCPeerConnection.setLocalDescription π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | Firefox: Firefox does not support descriptions of type pranswer.Firefox for Android: Firefox does not support descriptions of type pranswer. |
| api.RTCPeerConnection.setLocalDescription.description_parameter_optional | Firefox | 4/7/2020 | Safari | 4/26/2021 | 384 | |
| api.RTCPeerConnection.setLocalDescription.returns_promise | Firefox | 3/31/2015 | Safari | 9/19/2017 | 903 | |
| api.RTCPeerConnection.setRemoteDescription π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnection.setRemoteDescription.implicit_rollback | Firefox | 10/22/2019 | Safari | 3/14/2022 | 874 | |
| api.RTCPeerConnection.setRemoteDescription.returns_promise | Firefox | 3/31/2015 | Safari | 9/19/2017 | 903 | |
| api.RTCPeerConnection.signalingState π | Firefox | 9/17/2013 | Safari | 9/19/2017 | 1463 | |
| api.RTCPeerConnection.signalingstatechange_event π | Firefox | 2/24/2015 | Safari | 9/19/2017 | 938 | Firefox: Although the onsignalingstatechange property is supported, the signalingstatechange event is not fired as an Event object. See bug 1075133.Firefox for Android: Although the onsignalingstatechange property is supported, the signalingstatechange event is not fired as an Event object. See bug 1075133. |
| api.RTCPeerConnection.track_event π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCPeerConnectionIceEvent π | Firefox | 9/17/2013 | Safari | 9/17/2018 | 1826 | |
| api.RTCPeerConnectionIceEvent.RTCPeerConnectionIceEvent π | Firefox | 9/17/2013 | Safari | 9/17/2018 | 1826 | |
| api.RTCPeerConnectionIceEvent.candidate π | Firefox | 9/17/2013 | Safari | 9/17/2018 | 1826 | |
| api.RTCRtpReceiver π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.RTCRtpReceiver.getCapabilities_static π | Safari | 3/25/2019 | Firefox | 5/9/2023 | 1506 | |
| api.RTCRtpReceiver.getContributingSources π | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | |
| api.RTCRtpReceiver.getContributingSources.audioLevel π | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | |
| api.RTCRtpReceiver.getContributingSources.audio_tracks_supported | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | |
| api.RTCRtpReceiver.getContributingSources.source π | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | |
| api.RTCRtpReceiver.getContributingSources.timestamp π | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | Firefox: Starting in version 60, the timestamp is correctly computed based on the window's Performance time, rather than Date.getTime().Firefox for Android: Starting in version 60, the timestamp is correctly computed based on the window's Performance time, rather than Date.getTime(). |
| api.RTCRtpReceiver.getContributingSources.video_tracks_supported | Safari | 3/25/2019 | Firefox | 7/9/2019 | 106 | |
| api.RTCRtpReceiver.getParameters π | Safari | 9/19/2017 | Firefox | 7/9/2024 | 2485 | |
| api.RTCRtpReceiver.getParameters.return_object_property_codecs π | Safari | 9/19/2017 | Firefox | 7/9/2024 | 2485 | |
| api.RTCRtpReceiver.getStats π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.RTCRtpReceiver.getSynchronizationSources π | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | |
| api.RTCRtpReceiver.getSynchronizationSources.audio_tracks_supported | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | |
| api.RTCRtpReceiver.getSynchronizationSources.video_tracks_supported | Safari | 3/25/2019 | Firefox | 7/9/2019 | 106 | |
| api.RTCRtpReceiver.track π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.RTCRtpReceiver.transform π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpReceiver.transport π | Firefox | 10/20/2020 | Safari | 3/14/2022 | 510 | |
| api.RTCRtpScriptTransform π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpScriptTransform.RTCRtpScriptTransform π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpScriptTransformer π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpScriptTransformer.generateKeyFrame π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpScriptTransformer.options π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpScriptTransformer.readable π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpScriptTransformer.sendKeyFrameRequest π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpScriptTransformer.writable π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpSender π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.RTCRtpSender.dtmf π | Firefox | 3/7/2017 | Safari | 3/24/2020 | 1113 | |
| api.RTCRtpSender.getCapabilities_static π | Safari | 3/25/2019 | Firefox | 5/9/2023 | 1506 | |
| api.RTCRtpSender.getParameters π | Firefox | 4/26/2016 | Safari | 9/19/2017 | 511 | |
| api.RTCRtpSender.getParameters.return_object_property_codecs π | Safari | 9/19/2017 | Firefox | 7/9/2024 | 2485 | Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used. |
| api.RTCRtpSender.getParameters.return_object_property_encodings π | Firefox | 4/26/2016 | Safari | 3/25/2019 | 1063 | |
| api.RTCRtpSender.getParameters.return_object_property_headerExtensions π | Firefox | 4/26/2016 | Safari | 9/19/2017 | 511 | Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used. |
| api.RTCRtpSender.getParameters.return_object_property_rtcp π | Firefox | 4/26/2016 | Safari | 9/20/2021 | 1973 | Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used. |
| api.RTCRtpSender.getStats π | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.RTCRtpSender.replaceTrack π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.RTCRtpSender.setParameters π | Safari | 9/19/2017 | Firefox | 12/11/2018 | 448 | Firefox: Before Firefox 64, changes to parameters that should update live would not do so.Firefox for Android: Before Firefox for Android 64, changes to parameters that should update live would not do so. |
| api.RTCRtpSender.setParameters.parameters_codecs_parameter π | Safari | 3/25/2019 | Firefox | 7/9/2024 | 1933 | Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used. |
| api.RTCRtpSender.setParameters.parameters_encodings_parameter π | Firefox | 4/26/2016 | Safari | 9/19/2017 | 511 | |
| api.RTCRtpSender.setParameters.parameters_encodings_parameter.active | Safari | 4/12/2018 | Firefox | 2/14/2023 | 1769 | |
| api.RTCRtpSender.setParameters.parameters_encodings_parameter.maxBitrate π | Firefox | 4/26/2016 | Safari | 9/19/2017 | 511 | |
| api.RTCRtpSender.setParameters.parameters_encodings_parameter.maxFramerate π | Safari | 9/19/2017 | Firefox | 5/31/2022 | 1715 | Firefox: Zero is treated as 'no fps limit' (see bug 1611957).Firefox for Android: Zero is treated as 'no fps limit' (see bug 1611957). |
| api.RTCRtpSender.setParameters.parameters_encodings_parameter.priority π | Firefox | 4/26/2016 | Safari | 9/19/2017 | 511 | Firefox: In version 110 and later the default priority is low.Firefox for Android: In version 110 and later the default priority is low. |
| api.RTCRtpSender.setParameters.parameters_encodings_parameter.scaleResolutionDownBy π | Firefox | 4/26/2016 | Safari | 9/19/2017 | 511 | |
| api.RTCRtpSender.setParameters.parameters_headerExtensions_parameter π | Firefox | 4/26/2016 | Safari | 3/25/2019 | 1063 | Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used. |
| api.RTCRtpSender.setParameters.parameters_rtcp_parameter π | Firefox | 4/26/2016 | Safari | 9/20/2021 | 1973 | Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used. |
| api.RTCRtpSender.setStreams π | Safari | 4/26/2021 | Firefox | 5/9/2023 | 743 | |
| api.RTCRtpSender.track π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.RTCRtpSender.transform π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCRtpSender.transport π | Firefox | 10/20/2020 | Safari | 3/14/2022 | 510 | |
| api.RTCRtpTransceiver π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCRtpTransceiver.currentDirection π | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | |
| api.RTCRtpTransceiver.direction π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCRtpTransceiver.mid π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCRtpTransceiver.receiver π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCRtpTransceiver.sender π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCRtpTransceiver.setCodecPreferences π | Safari | 3/24/2020 | Firefox | 7/9/2024 | 1568 | |
| api.RTCRtpTransceiver.stop π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCRtpTransceiver.stopped | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCSctpTransport π | Safari | 3/14/2022 | Firefox | 5/9/2023 | 421 | |
| api.RTCSctpTransport.maxChannels π | Safari | 3/14/2022 | Firefox | 5/9/2023 | 421 | |
| api.RTCSctpTransport.maxMessageSize π | Safari | 3/14/2022 | Firefox | 5/9/2023 | 421 | |
| api.RTCSctpTransport.state π | Safari | 3/14/2022 | Firefox | 5/9/2023 | 421 | |
| api.RTCSctpTransport.statechange_event | Safari | 3/14/2022 | Firefox | 5/9/2023 | 421 | |
| api.RTCSctpTransport.transport π | Safari | 3/14/2022 | Firefox | 5/9/2023 | 421 | |
| api.RTCSessionDescription π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.RTCSessionDescription.RTCSessionDescription | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | |
| api.RTCSessionDescription.sdp π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCSessionDescription.toJSON π | Firefox | 9/17/2013 | Safari | 9/19/2017 | 1463 | |
| api.RTCSessionDescription.type π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCStatsReport π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.@@iterator | Firefox | 8/2/2016 | Safari | 9/19/2017 | 413 | |
| api.RTCStatsReport.entries π | Firefox | 8/2/2016 | Safari | 9/19/2017 | 413 | |
| api.RTCStatsReport.forEach π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.get π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.has π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.keys π | Firefox | 8/2/2016 | Safari | 9/19/2017 | 413 | |
| api.RTCStatsReport.size π | Firefox | 8/2/2016 | Safari | 9/19/2017 | 413 | |
| api.RTCStatsReport.type_candidate-pair π | Firefox | 4/29/2014 | Safari | 9/19/2017 | 1239 | |
| api.RTCStatsReport.type_candidate-pair.bytesReceived π | Safari | 9/19/2017 | Firefox | 9/28/2017 | 9 | |
| api.RTCStatsReport.type_candidate-pair.bytesSent π | Safari | 9/19/2017 | Firefox | 9/28/2017 | 9 | |
| api.RTCStatsReport.type_candidate-pair.id π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_candidate-pair.localCandidateId π | Firefox | 4/29/2014 | Safari | 9/19/2017 | 1239 | |
| api.RTCStatsReport.type_candidate-pair.nominated π | Safari | 9/19/2017 | Firefox | 9/28/2017 | 9 | |
| api.RTCStatsReport.type_candidate-pair.remoteCandidateId π | Firefox | 4/29/2014 | Safari | 9/19/2017 | 1239 | |
| api.RTCStatsReport.type_candidate-pair.state π | Firefox | 4/29/2014 | Safari | 9/19/2017 | 1239 | |
| api.RTCStatsReport.type_candidate-pair.timestamp π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_candidate-pair.transportId π | Safari | 9/19/2017 | Firefox | 9/28/2017 | 9 | |
| api.RTCStatsReport.type_candidate-pair.type π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_codec π | Safari | 3/24/2020 | Firefox | 3/8/2022 | 714 | |
| api.RTCStatsReport.type_codec.channels π | Safari | 4/26/2021 | Firefox | 3/8/2022 | 316 | |
| api.RTCStatsReport.type_codec.clockRate π | Safari | 3/24/2020 | Firefox | 3/8/2022 | 714 | |
| api.RTCStatsReport.type_codec.id π | Safari | 3/24/2020 | Firefox | 3/8/2022 | 714 | |
| api.RTCStatsReport.type_codec.mimeType π | Safari | 3/24/2020 | Firefox | 3/8/2022 | 714 | |
| api.RTCStatsReport.type_codec.payloadType π | Safari | 3/24/2020 | Firefox | 3/8/2022 | 714 | |
| api.RTCStatsReport.type_codec.sdpFmtpLine π | Safari | 9/16/2020 | Firefox | 3/8/2022 | 538 | |
| api.RTCStatsReport.type_codec.timestamp π | Safari | 3/24/2020 | Firefox | 3/8/2022 | 714 | |
| api.RTCStatsReport.type_codec.type π | Safari | 3/24/2020 | Firefox | 3/8/2022 | 714 | |
| api.RTCStatsReport.type_data-channel π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.bytesReceived π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.bytesSent π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.id π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.label π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.messagesReceived π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.messagesSent π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.protocol π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.state π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.timestamp π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_data-channel.type π | Safari | 3/24/2020 | Firefox | 7/28/2020 | 126 | |
| api.RTCStatsReport.type_inbound-rtp π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.type_inbound-rtp.bytesReceived π | Firefox | 2/4/2014 | Safari | 3/24/2020 | 2240 | |
| api.RTCStatsReport.type_inbound-rtp.concealedSamples π | Safari | 4/26/2021 | Firefox | 8/23/2022 | 484 | |
| api.RTCStatsReport.type_inbound-rtp.concealmentEvents π | Safari | 4/26/2021 | Firefox | 10/18/2022 | 540 | |
| api.RTCStatsReport.type_inbound-rtp.fecPacketsDiscarded π | Safari | 4/26/2021 | Firefox | 10/18/2022 | 540 | |
| api.RTCStatsReport.type_inbound-rtp.fecPacketsReceived π | Safari | 4/26/2021 | Firefox | 10/18/2022 | 540 | |
| api.RTCStatsReport.type_inbound-rtp.headerBytesReceived π | Safari | 4/26/2021 | Firefox | 10/18/2022 | 540 | |
| api.RTCStatsReport.type_inbound-rtp.id π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_inbound-rtp.insertedSamplesForDeceleration π | Safari | 4/26/2021 | Firefox | 10/18/2022 | 540 | |
| api.RTCStatsReport.type_inbound-rtp.jitter π | Firefox | 2/4/2014 | Safari | 3/24/2020 | 2240 | |
| api.RTCStatsReport.type_inbound-rtp.jitterBufferDelay π | Safari | 4/26/2021 | Firefox | 8/23/2022 | 484 | |
| api.RTCStatsReport.type_inbound-rtp.jitterBufferEmittedCount π | Safari | 4/26/2021 | Firefox | 8/23/2022 | 484 | |
| api.RTCStatsReport.type_inbound-rtp.kind π | Firefox | 10/23/2018 | Safari | 9/16/2020 | 694 | |
| api.RTCStatsReport.type_inbound-rtp.mid π | Safari | 9/18/2023 | Firefox | 2/4/2025 | 505 | |
| api.RTCStatsReport.type_inbound-rtp.packetsDiscarded π | Firefox | 1/11/2022 | Safari | 3/14/2022 | 62 | |
| api.RTCStatsReport.type_inbound-rtp.packetsLost π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_inbound-rtp.packetsReceived π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_inbound-rtp.removedSamplesForAcceleration π | Safari | 4/26/2021 | Firefox | 10/18/2022 | 540 | |
| api.RTCStatsReport.type_inbound-rtp.silentConcealedSamples π | Safari | 4/26/2021 | Firefox | 8/23/2022 | 484 | |
| api.RTCStatsReport.type_inbound-rtp.ssrc π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.type_inbound-rtp.timestamp π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_inbound-rtp.totalAudioEnergy π | Safari | 4/26/2021 | Firefox | 10/18/2022 | 540 | |
| api.RTCStatsReport.type_inbound-rtp.totalSamplesDuration π | Safari | 4/26/2021 | Firefox | 10/18/2022 | 540 | |
| api.RTCStatsReport.type_inbound-rtp.totalSamplesReceived π | Safari | 4/26/2021 | Firefox | 8/23/2022 | 484 | |
| api.RTCStatsReport.type_inbound-rtp.trackIdentifier π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| api.RTCStatsReport.type_inbound-rtp.type π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_local-candidate π | Firefox | 2/4/2014 | Safari | 3/25/2019 | 1875 | |
| api.RTCStatsReport.type_local-candidate.candidateType π | Firefox | 2/4/2014 | Safari | 3/25/2019 | 1875 | |
| api.RTCStatsReport.type_local-candidate.id π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_local-candidate.port π | Safari | 3/25/2019 | Firefox | 1/7/2020 | 288 | |
| api.RTCStatsReport.type_local-candidate.priority π | Safari | 3/25/2019 | Firefox | 1/7/2020 | 288 | |
| api.RTCStatsReport.type_local-candidate.protocol π | Firefox | 12/11/2018 | Safari | 3/25/2019 | 104 | |
| api.RTCStatsReport.type_local-candidate.timestamp π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_local-candidate.transportId π | Firefox | 7/22/2014 | Safari | 3/25/2019 | 1707 | |
| api.RTCStatsReport.type_local-candidate.type π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_media-source π | Safari | 4/26/2021 | Firefox | 5/9/2023 | 743 | |
| api.RTCStatsReport.type_media-source.id π | Safari | 4/26/2021 | Firefox | 5/9/2023 | 743 | |
| api.RTCStatsReport.type_media-source.kind π | Safari | 4/26/2021 | Firefox | 5/9/2023 | 743 | |
| api.RTCStatsReport.type_media-source.timestamp π | Safari | 4/26/2021 | Firefox | 5/9/2023 | 743 | |
| api.RTCStatsReport.type_media-source.trackIdentifier π | Safari | 4/26/2021 | Firefox | 5/9/2023 | 743 | |
| api.RTCStatsReport.type_media-source.type π | Safari | 4/26/2021 | Firefox | 5/9/2023 | 743 | |
| api.RTCStatsReport.type_outbound-rtp π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.type_outbound-rtp.bytesSent π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_outbound-rtp.codecId π | Safari | 9/19/2017 | Firefox | 3/8/2022 | 1631 | |
| api.RTCStatsReport.type_outbound-rtp.headerBytesSent π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.RTCStatsReport.type_outbound-rtp.id π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_outbound-rtp.kind π | Firefox | 10/23/2018 | Safari | 9/16/2020 | 694 | |
| api.RTCStatsReport.type_outbound-rtp.nackCount π | Firefox | 8/8/2017 | Safari | 3/14/2022 | 1679 | |
| api.RTCStatsReport.type_outbound-rtp.packetsSent π | Firefox | 2/4/2014 | Safari | 3/24/2020 | 2240 | |
| api.RTCStatsReport.type_outbound-rtp.retransmittedBytesSent π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.RTCStatsReport.type_outbound-rtp.retransmittedPacketsSent π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.RTCStatsReport.type_outbound-rtp.ssrc π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.type_outbound-rtp.timestamp π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_outbound-rtp.type π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_peer-connection π | Safari | 3/24/2020 | Firefox | 5/9/2023 | 1141 | |
| api.RTCStatsReport.type_peer-connection.dataChannelsClosed π | Safari | 3/24/2020 | Firefox | 5/9/2023 | 1141 | |
| api.RTCStatsReport.type_peer-connection.dataChannelsOpened π | Safari | 3/24/2020 | Firefox | 5/9/2023 | 1141 | |
| api.RTCStatsReport.type_peer-connection.id π | Safari | 3/24/2020 | Firefox | 5/9/2023 | 1141 | |
| api.RTCStatsReport.type_peer-connection.timestamp π | Safari | 3/24/2020 | Firefox | 5/9/2023 | 1141 | |
| api.RTCStatsReport.type_peer-connection.type π | Safari | 3/24/2020 | Firefox | 5/9/2023 | 1141 | |
| api.RTCStatsReport.type_remote-candidate π | Firefox | 2/4/2014 | Safari | 3/25/2019 | 1875 | |
| api.RTCStatsReport.type_remote-candidate.candidateType π | Firefox | 2/4/2014 | Safari | 3/25/2019 | 1875 | |
| api.RTCStatsReport.type_remote-candidate.id π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_remote-candidate.port π | Safari | 3/25/2019 | Firefox | 1/7/2020 | 288 | |
| api.RTCStatsReport.type_remote-candidate.priority π | Safari | 3/25/2019 | Firefox | 1/7/2020 | 288 | |
| api.RTCStatsReport.type_remote-candidate.protocol π | Firefox | 12/11/2018 | Safari | 3/25/2019 | 104 | |
| api.RTCStatsReport.type_remote-candidate.timestamp π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_remote-candidate.transportId π | Firefox | 7/22/2014 | Safari | 3/25/2019 | 1707 | |
| api.RTCStatsReport.type_remote-candidate.type π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| api.RTCStatsReport.type_remote-inbound-rtp π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.type_remote-inbound-rtp.codecId π | Safari | 9/19/2017 | Firefox | 3/8/2022 | 1631 | |
| api.RTCStatsReport.type_remote-inbound-rtp.id π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| api.RTCStatsReport.type_remote-inbound-rtp.kind π | Firefox | 10/23/2018 | Safari | 9/16/2020 | 694 | |
| api.RTCStatsReport.type_remote-inbound-rtp.localId π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| api.RTCStatsReport.type_remote-inbound-rtp.roundTripTime π | Safari | 4/26/2021 | Firefox | 1/11/2022 | 260 | |
| api.RTCStatsReport.type_remote-inbound-rtp.ssrc π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.type_remote-inbound-rtp.timestamp π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| api.RTCStatsReport.type_remote-inbound-rtp.type π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| api.RTCStatsReport.type_remote-outbound-rtp π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.type_remote-outbound-rtp.codecId π | Safari | 9/19/2017 | Firefox | 3/8/2022 | 1631 | |
| api.RTCStatsReport.type_remote-outbound-rtp.kind π | Firefox | 10/23/2018 | Safari | 9/16/2020 | 694 | |
| api.RTCStatsReport.type_remote-outbound-rtp.ssrc π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | |
| api.RTCStatsReport.values | Firefox | 8/2/2016 | Safari | 9/19/2017 | 413 | |
| api.RTCTrackEvent π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCTrackEvent.RTCTrackEvent π | Firefox | 4/26/2016 | Safari | 9/19/2017 | 511 | |
| api.RTCTrackEvent.receiver π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.RTCTrackEvent.streams π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCTrackEvent.track π | Firefox | 6/25/2013 | Safari | 9/19/2017 | 1547 | |
| api.RTCTrackEvent.transceiver π | Safari | 9/19/2017 | Firefox | 3/13/2018 | 175 | |
| api.RTCTransformEvent π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RTCTransformEvent.transformer π | Safari | 3/14/2022 | Firefox | 8/29/2023 | 533 | |
| api.RadioNodeList π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.RadioNodeList.value π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.Range π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Starting with Firefox 13, the Range object throws a DOMException as defined in DOM 4, instead of a RangeException defined in prior specifications.Firefox for Android: Starting with Firefox for Android 14, the Range object throws a DOMException as defined in DOM 4, instead of a RangeException defined in prior specifications. |
| api.Range.Range π | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | |
| api.Range.cloneContents π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.cloneRange π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.collapse π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.collapse.toStart_parameter_optional | Safari | 6/23/2003 | Firefox | 10/29/2013 | 3781 | Internet Explorer: Optional but defaults to true. |
| api.Range.collapsed π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.commonAncestorContainer π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.compareBoundaryPoints π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.comparePoint π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Range.createContextualFragment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.deleteContents π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.endContainer π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.endOffset π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.extractContents π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.getBoundingClientRect π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.Range.getClientRects π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.Range.insertNode π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.intersectsNode π | Safari | 10/26/2007 | Firefox | 11/20/2012 | 1852 | |
| api.Range.isPointInRange π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Range.selectNode π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.selectNodeContents π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.setEnd π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.setEndAfter π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.setEndBefore π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.setStart π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.setStartAfter π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.setStartBefore π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.startContainer π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.startOffset π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.surroundContents π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Range.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.ReadableStream π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | Node.js: Available as a part of the stream/web module. |
| api.ReadableStream.ReadableStream π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.ReadableStream.cancel π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.ReadableStream.getReader π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.ReadableStream.locked π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.ReadableStream.pipeThrough π | Safari | 3/27/2017 | Firefox | 6/28/2022 | 1919 | |
| api.ReadableStream.pipeTo π | Safari | 3/27/2017 | Firefox | 5/3/2022 | 1863 | |
| api.ReadableStream.tee π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | Node.js: Before 18.10.0 or 16.18.0, teeing a readable byte stream is not supported. |
| api.ReadableStreamDefaultController π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | Deno: ReadableStreamDefaultController is not exposed on the global scope.Node.js: Available as a part of the stream/web module. |
| api.ReadableStreamDefaultController.close π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| api.ReadableStreamDefaultController.desiredSize π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| api.ReadableStreamDefaultController.enqueue π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| api.ReadableStreamDefaultController.error π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| api.ReadableStreamDefaultReader π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | Deno: ReadableStreamDefaultReader is not exposed on the global scope.Node.js: Available as a part of the stream/web module. |
| api.ReadableStreamDefaultReader.ReadableStreamDefaultReader π | Safari | 9/20/2016 | Firefox | 5/3/2022 | 2051 | |
| api.ReadableStreamDefaultReader.cancel π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| api.ReadableStreamDefaultReader.closed π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| api.ReadableStreamDefaultReader.read π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| api.ReadableStreamDefaultReader.releaseLock π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| api.ReadableStreamDefaultReader.releaseLock.reject_pending_read_request | Firefox | 6/28/2022 | Safari | 9/18/2023 | 447 | Chrome: Before version 105, releaseLock() throws instead of rejecting.Chrome Android: Before version 105, releaseLock() throws instead of rejecting.Edge: Before version 105, releaseLock() throws instead of rejecting.Opera: Before version 91, releaseLock() throws instead of rejecting.Opera Android: Before version 72, releaseLock() throws instead of rejecting.Samsung Internet: Before version 20.0, releaseLock() throws instead of rejecting.WebView Android: Before version 105, releaseLock() throws instead of rejecting. |
| api.Report π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | Firefox: Worker support added in version 77 |
| api.Report.body π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | |
| api.Report.toJSON π | Firefox | 6/2/2020 | Safari | 3/27/2023 | 1028 | |
| api.Report.type π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | |
| api.Report.url π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | |
| api.ReportBody π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | |
| api.ReportBody.toJSON π | Firefox | 6/2/2020 | Safari | 3/27/2023 | 1028 | |
| api.ReportingObserver π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | |
| api.ReportingObserver.ReportingObserver π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | |
| api.ReportingObserver.disconnect π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | |
| api.ReportingObserver.observe π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | |
| api.ReportingObserver.takeRecords π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | |
| api.Request π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | Chrome: Only available in service workers.Chrome Android: Only available in service workers.Opera: Only available in service workers.Opera Android: Only available in service workers.WebView Android: Only available in service workers. |
| api.Request.Request π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | Chrome: From Chrome 47, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual).Chrome Android: From Chrome Android 47, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual).Deno: Fetching with a "manual" redirect mode does not result in a "opaqueredirect" response, but a regular response.Quest Browser: From Quest Browser 5.0, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual).Samsung Internet: From Samsung Internet 5.0, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual).WebView Android: From WebView Android 47, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual). |
| api.Request.Request.cross_origin_stripped | Safari | 3/27/2017 | Firefox | 6/13/2017 | 78 | |
| api.Request.Request.init_keepalive_parameter π | Safari | 9/19/2019 | Firefox | 11/26/2024 | 1895 | |
| api.Request.Request.init_priority_parameter π | Safari | 12/11/2023 | Firefox | 10/29/2024 | 323 | |
| api.Request.Request.init_referrer_parameter π | Firefox | 6/7/2016 | Safari | 3/27/2017 | 293 | |
| api.Request.arrayBuffer π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.blob π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.bodyUsed π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.bytes π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | |
| api.Request.cache π | Firefox | 8/2/2016 | Safari | 3/27/2017 | 237 | |
| api.Request.cache.only-if-cached | Firefox | 11/15/2016 | Safari | 3/27/2017 | 132 | |
| api.Request.clone π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.credentials π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.credentials.default_same-origin | Firefox | 6/26/2018 | Safari | 3/25/2019 | 272 | |
| api.Request.destination π | Safari | 3/27/2017 | Firefox | 6/26/2018 | 456 | |
| api.Request.formData π | Firefox | 7/2/2015 | Safari | 4/26/2021 | 2125 | Safari: The method exists but always rejects with NotSupportedError. See bug 215671.Safari on iOS: The method exists but always rejects with NotSupportedError. See bug 215671.WebView on iOS: The method exists but always rejects with NotSupportedError. See bug 215671. |
| api.Request.headers π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.integrity π | Firefox | 1/24/2017 | Safari | 3/27/2017 | 62 | |
| api.Request.json π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.keepalive π | Safari | 9/19/2019 | Firefox | 11/26/2024 | 1895 | |
| api.Request.method π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.mode π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.mode.navigate_mode | Firefox | 4/26/2016 | Safari | 3/27/2017 | 335 | |
| api.Request.redirect π | Firefox | 12/15/2015 | Safari | 3/27/2017 | 468 | Deno: Fetching with a "manual" redirect mode does not result in a "opaqueredirect" response, but a regular response. |
| api.Request.referrer π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.referrerPolicy π | Firefox | 6/7/2016 | Safari | 3/27/2017 | 293 | |
| api.Request.signal π | Firefox | 11/14/2017 | Safari | 3/25/2019 | 496 | |
| api.Request.text π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Request.url π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | Chrome: Fragment support added in Chrome 59.Chrome Android: Fragment support added in Chrome Android 59.Quest Browser: Fragment support added in Quest Browser 5.0.Opera: Fragment support added in Opera 46.Opera Android: Fragment support added in Opera 46.Samsung Internet: Fragment support added in Samsung Internet 7.0.WebView Android: Fragment support added in WebView Android 59. |
| api.ResizeObserver π | Firefox | 9/3/2019 | Safari | 3/24/2020 | 203 | |
| api.ResizeObserver.ResizeObserver π | Firefox | 9/3/2019 | Safari | 3/24/2020 | 203 | |
| api.ResizeObserver.disconnect π | Firefox | 9/3/2019 | Safari | 3/24/2020 | 203 | |
| api.ResizeObserver.observe π | Firefox | 9/3/2019 | Safari | 3/24/2020 | 203 | |
| api.ResizeObserver.observe.options_box_parameter | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | Firefox: Before version 93, the device-pixel-content-box value is not supported.Firefox for Android: Before version 93, the device-pixel-content-box value is not supported. |
| api.ResizeObserver.unobserve π | Firefox | 9/3/2019 | Safari | 3/24/2020 | 203 | |
| api.ResizeObserverEntry π | Firefox | 9/3/2019 | Safari | 3/24/2020 | 203 | |
| api.ResizeObserverEntry.borderBoxSize π | Firefox | 9/7/2021 | Safari | 3/14/2022 | 188 | Firefox: Implemented as a single object representing a content box size, rather than an array of content box size objects.Firefox for Android: Implemented as a single object representing a content box size, rather than an array of content box size objects. |
| api.ResizeObserverEntry.contentBoxSize π | Firefox | 9/7/2021 | Safari | 3/14/2022 | 188 | Firefox: Implemented as a single object representing a content box size, rather than an array of content box size objects.Firefox for Android: Implemented as a single object representing a content box size, rather than an array of content box size objects. |
| api.ResizeObserverEntry.contentRect π | Firefox | 9/3/2019 | Safari | 3/24/2020 | 203 | |
| api.ResizeObserverEntry.target π | Firefox | 9/3/2019 | Safari | 3/24/2020 | 203 | |
| api.ResizeObserverSize π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| api.ResizeObserverSize.blockSize π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| api.ResizeObserverSize.inlineSize π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| api.Response π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | Chrome: Only available in service workers.Chrome Android: Only available in service workers.Opera: Only available in service workers.Opera Android: Only available in service workers.WebView Android: Only available in service workers. |
| api.Response.Response π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.Response.accept_readablestream | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.Response.body_parameter_optional | Safari | 3/27/2017 | Firefox | 3/13/2018 | 351 | |
| api.Response.arrayBuffer π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.blob π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.body π | Safari | 3/27/2017 | Firefox | 1/29/2019 | 673 | |
| api.Response.bodyUsed π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.bytes π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | |
| api.Response.clone π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.error_static π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.formData π | Firefox | 7/2/2015 | Safari | 4/26/2021 | 2125 | Safari: The method exists but always rejects with NotSupportedError. See bug 215671.Safari on iOS: The method exists but always rejects with NotSupportedError. See bug 215671.WebView on iOS: The method exists but always rejects with NotSupportedError. See bug 215671. |
| api.Response.headers π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.json π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.json_static π | Firefox | 7/4/2023 | Safari | 9/18/2023 | 76 | |
| api.Response.ok π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.redirect_static π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.redirected π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| api.Response.status π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.statusText π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.text π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.type π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.Response.url π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.SVGAElement π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGAElement.href π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.SVGAElement.rel π | Firefox | 6/26/2018 | Safari | 9/16/2020 | 813 | |
| api.SVGAElement.relList π | Firefox | 6/26/2018 | Safari | 9/16/2020 | 813 | |
| api.SVGAElement.target π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGAngle π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAngle.convertToSpecifiedUnits π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAngle.newValueSpecifiedUnits π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAngle.unitType π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAngle.value π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAngle.valueAsString π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAngle.valueInSpecifiedUnits π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimateElement π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.SVGAnimateMotionElement π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.SVGAnimateTransformElement π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.SVGAnimatedAngle π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedAngle.animVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedAngle.baseVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedBoolean π | Firefox | 6/17/2008 | Safari | 6/7/2010 | 720 | |
| api.SVGAnimatedBoolean.animVal π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGAnimatedBoolean.baseVal π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGAnimatedEnumeration π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedEnumeration.animVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedEnumeration.baseVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedInteger π | Firefox | 6/17/2008 | Safari | 6/7/2010 | 720 | |
| api.SVGAnimatedInteger.animVal π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGAnimatedInteger.baseVal π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGAnimatedLength π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedLength.animVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedLength.baseVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedLengthList π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedLengthList.animVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedLengthList.baseVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedNumber π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedNumber.animVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedNumber.baseVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedNumberList π | Firefox | 11/29/2005 | Safari | 6/7/2010 | 1651 | |
| api.SVGAnimatedNumberList.animVal π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGAnimatedNumberList.baseVal π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGAnimatedPreserveAspectRatio π | Firefox | 11/29/2005 | Safari | 6/7/2010 | 1651 | |
| api.SVGAnimatedPreserveAspectRatio.animVal π | Safari | 7/25/2012 | Firefox | 6/25/2013 | 335 | |
| api.SVGAnimatedPreserveAspectRatio.baseVal π | Safari | 7/25/2012 | Firefox | 6/25/2013 | 335 | |
| api.SVGAnimatedRect π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedRect.animVal π | Safari | 10/26/2007 | Firefox | 8/28/2012 | 1768 | |
| api.SVGAnimatedRect.baseVal π | Safari | 10/26/2007 | Firefox | 8/28/2012 | 1768 | |
| api.SVGAnimatedString π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedString.animVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedString.baseVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedTransformList π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedTransformList.animVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimatedTransformList.baseVal π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGAnimationElement π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.SVGAnimationElement.beginElement π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.SVGAnimationElement.beginElementAt π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.SVGAnimationElement.beginEvent_event π | Safari | 9/20/2016 | Firefox | 10/5/2021 | 1841 | Chrome: The onbegin event handler property is not supported.Chrome Android: The onbegin event handler property is not supported.Firefox: The onbegin event handler property is not supported.Firefox for Android: The onbegin event handler property is not supported.Opera: The onbegin event handler property is not supported.Opera Android: The onbegin event handler property is not supported.Safari: The onbegin event handler property is not supported.Safari on iOS: The onbegin event handler property is not supported.Samsung Internet: The onbegin event handler property is not supported.WebView Android: The onbegin event handler property is not supported.WebView on iOS: The onbegin event handler property is not supported. |
| api.SVGAnimationElement.endElement π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.SVGAnimationElement.endElementAt π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.SVGAnimationElement.endEvent_event π | Safari | 9/20/2016 | Firefox | 10/5/2021 | 1841 | Chrome: The onend event handler property is not supported.Chrome Android: The onend event handler property is not supported.Firefox: The onend event handler property is not supported.Firefox for Android: The onend event handler property is not supported.Opera: The onend event handler property is not supported.Opera Android: The onend event handler property is not supported.Safari: The onend event handler property is not supported.Safari on iOS: The onend event handler property is not supported.Samsung Internet: The onend event handler property is not supported.WebView Android: The onend event handler property is not supported.WebView on iOS: The onend event handler property is not supported. |
| api.SVGAnimationElement.getCurrentTime π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.SVGAnimationElement.getSimpleDuration π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.SVGAnimationElement.getStartTime π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.SVGAnimationElement.repeatEvent_event π | Safari | 9/20/2016 | Firefox | 10/5/2021 | 1841 | Chrome: The onrepeat event handler property is not supported.Chrome Android: The onrepeat event handler property is not supported.Firefox: The onrepeat event handler property is not supported.Firefox for Android: The onrepeat event handler property is not supported.Opera: The onrepeat event handler property is not supported.Opera Android: The onrepeat event handler property is not supported.Safari: The onrepeat event handler property is not supported.Safari on iOS: The onrepeat event handler property is not supported.Samsung Internet: The onrepeat event handler property is not supported.WebView Android: The onrepeat event handler property is not supported.WebView on iOS: The onrepeat event handler property is not supported. |
| api.SVGAnimationElement.requiredExtensions π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGAnimationElement.systemLanguage π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGAnimationElement.targetElement π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.SVGCircleElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGCircleElement.cx π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGCircleElement.cy π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGCircleElement.r π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGClipPathElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGClipPathElement.clipPathUnits π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGClipPathElement.transform π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGComponentTransferFunctionElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGComponentTransferFunctionElement.amplitude π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGComponentTransferFunctionElement.exponent π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGComponentTransferFunctionElement.intercept π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGComponentTransferFunctionElement.offset π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGComponentTransferFunctionElement.slope π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGComponentTransferFunctionElement.tableValues π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGComponentTransferFunctionElement.type π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGDefsElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGDescElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGElement.autofocus π | Safari | 3/14/2022 | Firefox | 2/14/2023 | 337 | Firefox: Only supported on SVGGraphicsElement.Firefox for Android: Only supported on SVGGraphicsElement. |
| api.SVGElement.blur π | Safari | 10/26/2007 | Firefox | 1/24/2017 | 3378 | |
| api.SVGElement.className π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGElement.dataset π | Safari | 7/20/2011 | Firefox | 1/24/2017 | 2015 | |
| api.SVGElement.error_event π | Firefox | 11/29/2005 | Safari | 7/25/2012 | 2430 | |
| api.SVGElement.focus π | Safari | 10/26/2007 | Firefox | 1/24/2017 | 3378 | |
| api.SVGElement.focus.options_preventScroll_parameter | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| api.SVGElement.load_event π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | Firefox: See bug 620002 for implementation status of the standard load event.Firefox for Android: See bug 620002 for implementation status of the standard load event. |
| api.SVGElement.nonce π | Firefox | 4/7/2020 | Safari | 3/14/2022 | 706 | |
| api.SVGElement.ownerSVGElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGElement.style π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGElement.tabIndex π | Safari | 10/16/2014 | Firefox | 1/24/2017 | 831 | |
| api.SVGElement.viewportElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGEllipseElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGEllipseElement.cx π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGEllipseElement.cy π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGEllipseElement.rx π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGEllipseElement.ry π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGFEBlendElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEBlendElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEBlendElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEBlendElement.in2 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEBlendElement.mode π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEBlendElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEBlendElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEBlendElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEBlendElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEColorMatrixElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEColorMatrixElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEColorMatrixElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEColorMatrixElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEColorMatrixElement.type π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEColorMatrixElement.values π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEColorMatrixElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEColorMatrixElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEColorMatrixElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEComponentTransferElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEComponentTransferElement.height π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFEComponentTransferElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEComponentTransferElement.result π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFEComponentTransferElement.width π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFEComponentTransferElement.x π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFEComponentTransferElement.y π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFECompositeElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.in2 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.k1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.k2 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.k3 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.k4 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.operator π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFECompositeElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.bias π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.divisor π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.edgeMode π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.kernelMatrix π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.kernelUnitLengthX π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.kernelUnitLengthY π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.orderX π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.orderY π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.preserveAlpha π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.targetX π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.targetY π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEConvolveMatrixElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.diffuseConstant π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.kernelUnitLengthX π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.kernelUnitLengthY π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.surfaceScale π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDiffuseLightingElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.in2 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.scale π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.xChannelSelector π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDisplacementMapElement.yChannelSelector π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDistantLightElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDistantLightElement.azimuth π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDistantLightElement.elevation π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEDropShadowElement π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.dx π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.dy π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.height π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.in1 π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.result π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.setStdDeviation π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.stdDeviationX π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.stdDeviationY π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.width π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.x π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEDropShadowElement.y π | Safari | 7/25/2012 | Firefox | 6/10/2014 | 685 | |
| api.SVGFEFloodElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEFloodElement.height π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| api.SVGFEFloodElement.result π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| api.SVGFEFloodElement.width π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| api.SVGFEFloodElement.x π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| api.SVGFEFloodElement.y π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| api.SVGFEFuncAElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEFuncBElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEFuncGElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEFuncRElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEGaussianBlurElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEGaussianBlurElement.height π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFEGaussianBlurElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEGaussianBlurElement.result π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFEGaussianBlurElement.setStdDeviation π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEGaussianBlurElement.stdDeviationX π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEGaussianBlurElement.stdDeviationY π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEGaussianBlurElement.width π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFEGaussianBlurElement.x π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFEGaussianBlurElement.y π | Safari | 7/25/2012 | Firefox | 4/29/2014 | 643 | |
| api.SVGFEImageElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEImageElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEImageElement.href π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEImageElement.preserveAspectRatio π | Safari | 7/25/2012 | Firefox | 6/25/2013 | 335 | |
| api.SVGFEImageElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEImageElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEImageElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEImageElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMergeElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMergeElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMergeElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMergeElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMergeElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMergeElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMergeNodeElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMergeNodeElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement.operator π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement.radiusX π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement.radiusY π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEMorphologyElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEOffsetElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEOffsetElement.dx π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEOffsetElement.dy π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEOffsetElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEOffsetElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEOffsetElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEOffsetElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEOffsetElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEOffsetElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEPointLightElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEPointLightElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEPointLightElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFEPointLightElement.z π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement.kernelUnitLengthX π | Firefox | 6/17/2008 | Safari | 3/5/2024 | 5740 | |
| api.SVGFESpecularLightingElement.kernelUnitLengthY π | Firefox | 6/17/2008 | Safari | 3/5/2024 | 5740 | |
| api.SVGFESpecularLightingElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement.specularConstant π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement.specularExponent π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement.surfaceScale π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpecularLightingElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpotLightElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpotLightElement.limitingConeAngle π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpotLightElement.pointsAtX π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpotLightElement.pointsAtY π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpotLightElement.pointsAtZ π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpotLightElement.specularExponent π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpotLightElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpotLightElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFESpotLightElement.z π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETileElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETileElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETileElement.in1 π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETileElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETileElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETileElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETileElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.baseFrequencyX π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.baseFrequencyY π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.numOctaves π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.result π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.seed π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.stitchTiles π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.type π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFETurbulenceElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFilterElement π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFilterElement.filterUnits π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFilterElement.height π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFilterElement.href π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFilterElement.primitiveUnits π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFilterElement.width π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFilterElement.x π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGFilterElement.y π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGForeignObjectElement π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGForeignObjectElement.height π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| api.SVGForeignObjectElement.width π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| api.SVGForeignObjectElement.x π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| api.SVGForeignObjectElement.y π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| api.SVGGElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGGeometryElement π | Firefox | 4/19/2017 | Safari | 9/17/2018 | 516 | Chrome: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Chrome Android: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Edge: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Firefox: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Firefox for Android: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Internet Explorer: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Opera: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Opera Android: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Safari: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Safari on iOS: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Samsung Internet: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.WebView Android: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.WebView on iOS: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface. |
| api.SVGGeometryElement.getPointAtLength π | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | Chrome: Only supported for SVGPathElement, not all SVGGeometryElement objects.Chrome Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Edge: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox for Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Internet Explorer: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects.Samsung Internet: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects. |
| api.SVGGeometryElement.getTotalLength π | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | Chrome: Only supported for SVGPathElement, not all SVGGeometryElement objects.Chrome Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Edge: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox for Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Internet Explorer: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects.Samsung Internet: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects. |
| api.SVGGeometryElement.isPointInFill π | Safari | 9/17/2018 | Firefox | 9/3/2019 | 351 | Chrome: The element this method is called for must be in the DOM; otherwise, this method will always return false.Chrome Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.Edge: The element this method is called for must be in the DOM; otherwise, this method will always return false.Quest Browser: The element this method is called for must be in the DOM; otherwise, this method will always return false.Opera: The element this method is called for must be in the DOM; otherwise, this method will always return false.Opera Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.WebView Android: The element this method is called for must be in the DOM; otherwise, this method will always return false. |
| api.SVGGeometryElement.isPointInFill.point_parameter_DOMPoint | Safari | 9/17/2018 | Firefox | 9/3/2019 | 351 | |
| api.SVGGeometryElement.isPointInStroke π | Safari | 9/17/2018 | Firefox | 9/3/2019 | 351 | Chrome: The element this method is called for must be in the DOM; otherwise, this method will always return false.Chrome Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.Edge: The element this method is called for must be in the DOM; otherwise, this method will always return false.Quest Browser: The element this method is called for must be in the DOM; otherwise, this method will always return false.Opera: The element this method is called for must be in the DOM; otherwise, this method will always return false.Opera Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.WebView Android: The element this method is called for must be in the DOM; otherwise, this method will always return false. |
| api.SVGGeometryElement.isPointInStroke.point_parameter_DOMPoint | Safari | 9/17/2018 | Firefox | 9/3/2019 | 351 | |
| api.SVGGeometryElement.pathLength π | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | Chrome: Only supported for SVGPathElement, not all SVGGeometryElement objects.Chrome Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox for Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects.Samsung Internet: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects. |
| api.SVGGradientElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGGradientElement.gradientTransform π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGGradientElement.gradientUnits π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGGradientElement.href π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| api.SVGGradientElement.spreadMethod π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGGraphicsElement π | Firefox | 4/2/2013 | Safari | 10/22/2013 | 203 | Chrome: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Chrome Android: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Firefox: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Firefox for Android: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Internet Explorer: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Opera: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Opera Android: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Safari: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Safari on iOS: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Samsung Internet: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.WebView Android: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.WebView on iOS: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement. |
| api.SVGGraphicsElement.getBBox π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Firefox: Before Firefox 128, the getBBox() method returned an empty DOMRect when there is no fill (bug 1019326).Firefox: Before Firefox 68, this method didn't work for <textPath> and <tspan> elements (bug 937268).Firefox for Android: Before Firefox for Android 128, the getBBox() method returned an empty DOMRect when there is no fill (bug 1019326).Firefox for Android: Before Firefox for Android 68, this method didn't work for <textPath> and <tspan> elements (bug 937268). |
| api.SVGGraphicsElement.getCTM π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGGraphicsElement.getScreenCTM π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari: Transforms on the parent are not propagated down to its children; see bug 209220.Safari on iOS: Transforms on the parent are not propagated down to its children; see bug 209220.WebView on iOS: Transforms on the parent are not propagated down to its children; see bug 209220. |
| api.SVGGraphicsElement.requiredExtensions π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGGraphicsElement.systemLanguage π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGGraphicsElement.transform π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGImageElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGImageElement.crossOrigin π | Firefox | 6/6/2023 | Safari | 12/11/2023 | 188 | |
| api.SVGImageElement.height π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGImageElement.href π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGImageElement.preserveAspectRatio π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGImageElement.width π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGImageElement.x π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGImageElement.y π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLength π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLength.convertToSpecifiedUnits π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLength.newValueSpecifiedUnits π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLength.unitType π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLength.value π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLength.valueAsString π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLength.valueInSpecifiedUnits π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLengthList π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLengthList.appendItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLengthList.clear π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLengthList.getItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLengthList.initialize π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLengthList.insertItemBefore π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLengthList.length π | Firefox | 6/21/2011 | Safari | 3/24/2020 | 3199 | |
| api.SVGLengthList.numberOfItems π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLengthList.removeItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLengthList.replaceItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLineElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLineElement.x1 π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLineElement.x2 π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLineElement.y1 π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLineElement.y2 π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLinearGradientElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLinearGradientElement.x1 π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLinearGradientElement.x2 π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLinearGradientElement.y1 π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGLinearGradientElement.y2 π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMPathElement π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.SVGMPathElement.href π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.SVGMarkerElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.markerHeight π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.markerUnits π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.markerWidth π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.orientAngle π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.orientType π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.preserveAspectRatio π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| api.SVGMarkerElement.refX π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.refY π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.setOrientToAngle π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.setOrientToAuto π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGMarkerElement.viewBox π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| api.SVGMaskElement π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGMaskElement.height π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGMaskElement.maskContentUnits π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| api.SVGMaskElement.maskUnits π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| api.SVGMaskElement.width π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGMaskElement.x π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGMaskElement.y π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGMetadataElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGNumber π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGNumber.value π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGNumberList π | Firefox | 11/29/2005 | Safari | 6/7/2010 | 1651 | |
| api.SVGNumberList.appendItem π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGNumberList.clear π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGNumberList.getItem π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGNumberList.initialize π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGNumberList.insertItemBefore π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGNumberList.length π | Firefox | 6/21/2011 | Safari | 3/24/2020 | 3199 | |
| api.SVGNumberList.numberOfItems π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGNumberList.removeItem π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGNumberList.replaceItem π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| api.SVGPathElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPatternElement π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.height π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.href π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.patternContentUnits π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.patternTransform π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.patternUnits π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.preserveAspectRatio π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.viewBox π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.width π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.x π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPatternElement.y π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGPoint π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPoint.matrixTransform π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPoint.x π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPoint.y π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPointList π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPointList.appendItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPointList.clear π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPointList.getItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPointList.initialize π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPointList.insertItemBefore π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPointList.length π | Firefox | 6/21/2011 | Safari | 3/24/2020 | 3199 | |
| api.SVGPointList.numberOfItems π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPointList.removeItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPointList.replaceItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPolygonElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPolygonElement.animatedPoints π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPolygonElement.points π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPolylineElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPolylineElement.animatedPoints π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPolylineElement.points π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPreserveAspectRatio π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPreserveAspectRatio.align π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGPreserveAspectRatio.meetOrSlice π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRadialGradientElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRadialGradientElement.cx π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRadialGradientElement.cy π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRadialGradientElement.fr π | Safari | 10/22/2013 | Firefox | 8/8/2017 | 1386 | |
| api.SVGRadialGradientElement.fx π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRadialGradientElement.fy π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRadialGradientElement.r π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRect π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRect.height | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRect.width | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRect.x | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRect.y | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRectElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRectElement.height π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRectElement.rx π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGRectElement.ry π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGRectElement.width π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRectElement.x π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGRectElement.y π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.animationsPaused π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.createSVGAngle π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.createSVGLength π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.createSVGMatrix π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.createSVGNumber π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.createSVGPoint π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.createSVGRect π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.createSVGTransform π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.createSVGTransformFromMatrix π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.currentScale π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.currentTranslate π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.deselectAll π | Safari | 10/26/2007 | Firefox | 10/29/2013 | 2195 | |
| api.SVGSVGElement.forceRedraw π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.getCurrentTime π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.getElementById π | Firefox | 11/29/2005 | Safari | 7/20/2011 | 2059 | |
| api.SVGSVGElement.height π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.pauseAnimations π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.preserveAspectRatio π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.setCurrentTime π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.suspendRedraw π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.unpauseAnimations π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.unsuspendRedraw π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.unsuspendRedrawAll π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.viewBox π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.width π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.x π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSVGElement.y π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGScriptElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGScriptElement.href π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGScriptElement.type π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSetElement π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.SVGStopElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGStopElement.offset π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGStringList π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | Firefox: Since version 13, SVGStringList is indexable like Array which is a non-standard behavior.Firefox for Android: SVGStringList is indexable like Array which is a non-standard behavior. |
| api.SVGStringList.appendItem π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGStringList.clear π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGStringList.getItem π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGStringList.initialize π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGStringList.insertItemBefore π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGStringList.length π | Firefox | 4/24/2012 | Safari | 3/24/2020 | 2891 | |
| api.SVGStringList.numberOfItems π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGStringList.removeItem π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGStringList.replaceItem π | Safari | 10/26/2007 | Firefox | 4/24/2012 | 1642 | |
| api.SVGStyleElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGStyleElement.disabled π | Safari | 7/25/2012 | Firefox | 8/23/2022 | 3681 | |
| api.SVGStyleElement.media π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGStyleElement.sheet π | Firefox | 11/29/2005 | Safari | 3/27/2023 | 6327 | |
| api.SVGStyleElement.title π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGStyleElement.type π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSwitchElement π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| api.SVGSymbolElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSymbolElement.preserveAspectRatio π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGSymbolElement.viewBox π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTSpanElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.getCharNumAtPosition π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.getComputedTextLength π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.getEndPositionOfChar π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.getExtentOfChar π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.getNumberOfChars π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.getRotationOfChar π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.getStartPositionOfChar π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.getSubStringLength π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.lengthAdjust π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.selectSubString π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextContentElement.textLength π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextPathElement π | Firefox | 10/24/2006 | Safari | 3/18/2008 | 511 | |
| api.SVGTextPathElement.href π | Firefox | 10/24/2006 | Safari | 3/18/2008 | 511 | |
| api.SVGTextPathElement.method π | Safari | 3/18/2008 | Firefox | 4/2/2013 | 1841 | |
| api.SVGTextPathElement.spacing π | Safari | 3/18/2008 | Firefox | 4/2/2013 | 1841 | |
| api.SVGTextPathElement.startOffset π | Safari | 3/18/2008 | Firefox | 4/2/2013 | 1841 | |
| api.SVGTextPositioningElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextPositioningElement.dx π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextPositioningElement.dy π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextPositioningElement.rotate π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextPositioningElement.x π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTextPositioningElement.y π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTitleElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransform π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransform.angle π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransform.matrix π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransform.setMatrix π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransform.setRotate π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransform.setScale π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransform.setSkewX π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransform.setSkewY π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransform.setTranslate π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransform.type π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.SVGTransformList π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.appendItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.clear π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.consolidate π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.createSVGTransformFromMatrix π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.getItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.initialize π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.insertItemBefore π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.length π | Firefox | 12/20/2011 | Safari | 3/24/2020 | 3017 | |
| api.SVGTransformList.numberOfItems π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.removeItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGTransformList.replaceItem π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGUnitTypes π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| api.SVGUseElement π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGUseElement.height π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGUseElement.href π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGUseElement.width π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGUseElement.x π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGUseElement.y π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| api.SVGViewElement π | Safari | 10/26/2007 | Firefox | 8/28/2012 | 1768 | |
| api.SVGViewElement.preserveAspectRatio π | Safari | 10/26/2007 | Firefox | 8/28/2012 | 1768 | |
| api.SVGViewElement.viewBox π | Safari | 10/26/2007 | Firefox | 8/28/2012 | 1768 | |
| api.Screen π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Screen.availHeight π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: Always reflects the main screen. |
| api.Screen.availLeft | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Screen.availLeft.relative-multi-screen | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable. |
| api.Screen.availTop | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Screen.availTop.relative-multi-screen | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable. |
| api.Screen.availWidth π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: Always reflects the main screen. |
| api.Screen.colorDepth π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Starting with version 59 this property is no longer required to always return 24.Chrome Android: Starting with version 59 this property is no longer required to always return 24.Quest Browser: Starting with version 5.0 this property is no longer required to always return 24.Samsung Internet: Starting with Samsung Internet 7.0 this property is no longer required to always return 24.WebView Android: Starting with version 59 this property is no longer required to always return 24. |
| api.Screen.height π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Screen.orientation π | Firefox | 12/15/2015 | Safari | 3/27/2023 | 2659 | Edge: Edge does not return an Orientation object; instead, it returns the orientation type as a string.Internet Explorer: Not supported on Windows 7. |
| api.Screen.pixelDepth π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Starting with version 59 this property is no longer required to always return 24.Chrome Android: Starting with version 59 this property is no longer required to always return 24.Quest Browser: Starting with version 5.0 this property is no longer required to always return 24.Samsung Internet: Starting with Samsung Internet 7.0 this property is no longer required to always return 24.WebView Android: Starting with version 59 this property is no longer required to always return 24. |
| api.Screen.width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.ScreenOrientation π | Firefox | 12/15/2015 | Safari | 3/27/2023 | 2659 | |
| api.ScreenOrientation.angle π | Firefox | 12/15/2015 | Safari | 3/27/2023 | 2659 | |
| api.ScreenOrientation.change_event π | Firefox | 12/15/2015 | Safari | 3/27/2023 | 2659 | |
| api.ScreenOrientation.type π | Firefox | 12/15/2015 | Safari | 3/27/2023 | 2659 | |
| api.ScriptProcessorNode | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.ScriptProcessorNode.audioprocess_event | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.ScriptProcessorNode.bufferSize π | Safari | 10/22/2013 | Firefox | 10/29/2013 | 7 | |
| api.SecurityPolicyViolationEvent π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.SecurityPolicyViolationEvent π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.blockedURI π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.columnNumber π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.disposition π | Firefox | 10/23/2018 | Safari | 9/20/2021 | 1063 | |
| api.SecurityPolicyViolationEvent.documentURI π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.effectiveDirective π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.lineNumber π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.originalPolicy π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.referrer π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.sample π | Firefox | 10/23/2018 | Safari | 9/20/2021 | 1063 | |
| api.SecurityPolicyViolationEvent.sourceFile π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.statusCode π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.SecurityPolicyViolationEvent.violatedDirective π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.Selection π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.addRange π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Selection.anchorNode π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.anchorOffset π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.collapse π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.collapse.node_parameter_nullable | Safari | 4/15/2005 | Firefox | 8/8/2017 | 4498 | |
| api.Selection.collapse.offset_parameter_optional | Safari | 4/15/2005 | Firefox | 8/8/2017 | 4498 | |
| api.Selection.collapseToEnd π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.collapseToStart π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.containsNode π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | Firefox: Before Firefox 35, the method didn't throw if node was null.Firefox for Android: Before Firefox for Android 35, the method didn't throw if node was null. |
| api.Selection.containsNode.partialContainment_parameter_optional | Safari | 3/18/2008 | Firefox | 8/8/2017 | 3430 | |
| api.Selection.deleteFromDocument π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.Selection.direction π | Safari | 9/18/2023 | Firefox | 5/14/2024 | 239 | |
| api.Selection.empty π | Safari | 4/15/2005 | Firefox | 8/8/2017 | 4498 | |
| api.Selection.extend π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.Selection.extend.offset_parameter_optional | Safari | 3/18/2008 | Firefox | 8/8/2017 | 3430 | |
| api.Selection.focusNode π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.focusOffset π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.getRangeAt π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Selection.isCollapsed π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.modify π | Safari | 4/15/2005 | Firefox | 3/22/2011 | 2167 | |
| api.Selection.rangeCount π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Selection.removeAllRanges π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Selection.removeRange π | Firefox | 11/9/2004 | Safari | 9/18/2023 | 6887 | |
| api.Selection.selectAllChildren π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.Selection.setBaseAndExtent π | Safari | 4/15/2005 | Firefox | 4/19/2017 | 4387 | |
| api.Selection.setPosition π | Safari | 4/15/2005 | Firefox | 8/8/2017 | 4498 | |
| api.Selection.toString π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Selection.type π | Safari | 4/15/2005 | Firefox | 11/14/2017 | 4596 | |
| api.ServiceWorker π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorker.error_event π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorker.postMessage π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorker.scriptURL π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorker.state π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorker.statechange_event π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerContainer π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerContainer.controller π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerContainer.controllerchange_event π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerContainer.getRegistration π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerContainer.getRegistrations π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerContainer.message_event π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerContainer.messageerror_event π | Firefox | 1/29/2019 | Safari | 3/27/2023 | 1518 | Safari: Although the onmessageerror event handler property is supported, the messageerror event is never fired.Safari on iOS: Although the onmessageerror event handler property is supported, the messageerror event is never fired. |
| api.ServiceWorkerContainer.ready π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerContainer.register π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerContainer.startMessages π | Safari | 4/12/2018 | Firefox | 12/11/2018 | 243 | |
| api.ServiceWorkerContainer.worker_support | Safari | 4/12/2018 | Firefox | 11/26/2024 | 2420 | |
| api.ServiceWorkerGlobalScope π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerGlobalScope.activate_event π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerGlobalScope.clients π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerGlobalScope.fetch_event π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerGlobalScope.install_event π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerGlobalScope.message_event π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerGlobalScope.messageerror_event π | Safari | 4/12/2018 | Firefox | 1/29/2019 | 292 | Safari: Although the onmessageerror property is supported, the messageerror event is never fired. See bug 272967.Safari on iOS: Although the onmessageerror property is supported, the messageerror event is never fired. See bug 272967. |
| api.ServiceWorkerGlobalScope.notificationclick_event π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later. |
| api.ServiceWorkerGlobalScope.notificationclose_event π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later. |
| api.ServiceWorkerGlobalScope.push_event π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.ServiceWorkerGlobalScope.pushsubscriptionchange_event π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Firefox: The event does not have the oldSubscription and newSubscription properties. See bug 1497429.Firefox for Android: The event does not have the oldSubscription and newSubscription properties. See bug 1497429.Safari: Notifications are supported on macOS Ventura and later. |
| api.ServiceWorkerGlobalScope.registration π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerGlobalScope.skipWaiting π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerRegistration π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerRegistration.active π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerRegistration.getNotifications π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.ServiceWorkerRegistration.installing π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerRegistration.navigationPreload π | Safari | 3/14/2022 | Firefox | 4/5/2022 | 22 | |
| api.ServiceWorkerRegistration.pushManager π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.ServiceWorkerRegistration.scope π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerRegistration.showNotification π | Firefox | 1/26/2016 | Safari | 9/12/2022 | 2421 | Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen. |
| api.ServiceWorkerRegistration.unregister π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerRegistration.update π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | Chrome: Starting with Chrome 46, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Chrome: Before Chrome 48, this method always bypassed the browser cache. Starting with Chrome 48, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Chrome Android: Starting with Chrome Android 46, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Chrome Android: Before Chrome Android 48, this method always bypassed the browser cache. Starting with Chrome Android 48, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Quest Browser: Starting with Quest Browser 5.0, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Quest Browser: Before Quest Browser 5.0, this method always bypassed the browser cache. Starting with Quest Browser 5.0, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Opera: Starting with Opera 33, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Opera: Before Opera 35, this method always bypassed the browser cache. Starting with Opera 35, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Opera Android: Starting with Opera Android 33, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Opera Android: Before Opera Android 35, this method always bypassed the browser cache. Starting with Opera Android 35, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Samsung Internet: Starting with Samsung Internet 5.0, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Samsung Internet: Before Samsung Internet 5.0, this method always bypassed the browser cache. Starting with Samsung Internet 5.0, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.WebView Android: Starting with WebView Android 46, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.WebView Android: Before WebView Android 48, this method always bypassed the browser cache. Starting with WebView Android 48, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago. |
| api.ServiceWorkerRegistration.updateViaCache π | Firefox | 11/14/2017 | Safari | 4/12/2018 | 149 | |
| api.ServiceWorkerRegistration.updatefound_event π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ServiceWorkerRegistration.waiting π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.ShadowRoot π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.ShadowRoot.activeElement π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.ShadowRoot.adoptedStyleSheets π | Firefox | 5/31/2022 | Safari | 3/27/2023 | 300 | |
| api.ShadowRoot.clonable π | Firefox | 2/20/2024 | Safari | 3/5/2024 | 14 | |
| api.ShadowRoot.delegatesFocus π | Safari | 9/20/2021 | Firefox | 11/2/2021 | 43 | |
| api.ShadowRoot.elementFromPoint | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | Chrome: Before Chrome 66, this method returned null when the element was a child of a host node. See bug 40537452.Chrome Android: Before Chrome Android 66, this method returned null when the element was a child of a host node. See bug 40537452.Quest Browser: Before Quest Browser 5.0, this method returned null when the element was a child of a host node. See bug 40537452.Opera: Before Opera 53, this method returned null when the element was a child of a host node. See bug 40537452.Opera Android: Before Opera Android 47, this method returned null when the element was a child of a host node. See bug 40537452.Samsung Internet: Before Samsung Internet 9.0, this method returned null when the element was a child of a host node. See bug 40537452.WebView Android: Before WebView Android 66, this method returned null when the element was a child of a host node. See bug 40537452. |
| api.ShadowRoot.elementsFromPoint | Safari | 4/12/2018 | Firefox | 10/23/2018 | 194 | Chrome: Before Chrome 66, this method returned null when the element was a child of a host node. See bug 40537452.Chrome Android: Before Chrome Android 66, this method returned null when the element was a child of a host node. See bug 40537452.Quest Browser: Before Quest Browser 5.0, this method returned null when the element was a child of a host node. See bug 40537452.Samsung Internet: Before Samsung Internet 9.0, this method returned null when the element was a child of a host node. See bug 40537452.WebView Android: Before WebView Android 66, this method returned null when the element was a child of a host node. See bug 40537452. |
| api.ShadowRoot.fullscreenElement π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.WebView on iOS: Only available on iPad, not on iPhone.WebView on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games. |
| api.ShadowRoot.getAnimations π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| api.ShadowRoot.getHTML π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | |
| api.ShadowRoot.host π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.ShadowRoot.innerHTML π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.ShadowRoot.mode π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | |
| api.ShadowRoot.pointerLockElement π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | |
| api.ShadowRoot.serializable π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | |
| api.ShadowRoot.setHTMLUnsafe π | Firefox | 2/20/2024 | Safari | 3/5/2024 | 14 | |
| api.ShadowRoot.slotAssignment π | Firefox | 9/7/2021 | Safari | 3/27/2023 | 566 | |
| api.ShadowRoot.styleSheets π | Firefox | 10/23/2018 | Safari | 3/25/2019 | 153 | |
| api.SharedWorker π | Firefox | 4/29/2014 | Safari | 9/12/2022 | 3058 | |
| api.SharedWorker.SharedWorker π | Firefox | 4/29/2014 | Safari | 9/12/2022 | 3058 | |
| api.SharedWorker.SharedWorker.ecmascript_modules | Safari | 9/20/2021 | Firefox | 6/6/2023 | 624 | Node.js: ECMAScript modules are enabled for files ending with .mjs and for files ending with .js when the nearest parent package.json file contains a top-level field "type" with a value of "module".Safari: Nested workers support was introduced in Safari 15.5.Safari: Script loading in nested workers was introduced in Safari 16.4.Safari on iOS: Nested workers support was introduced in Safari on iOS 15.5.Safari on iOS: Script loading in nested workers was introduced in Safari on iOS 16.4.WebView on iOS: Nested workers support was introduced in WebView on iOS 15.5.WebView on iOS: Script loading in nested workers was introduced in WebView on iOS 16.4. |
| api.SharedWorker.SharedWorker.mime_checks | Firefox | 9/22/2020 | Safari | 9/12/2022 | 720 | |
| api.SharedWorker.SharedWorker.options_type_parameter | Safari | 9/20/2021 | Firefox | 6/6/2023 | 624 | Deno: Only supports module |
| api.SharedWorker.error_event π | Firefox | 4/29/2014 | Safari | 9/12/2022 | 3058 | |
| api.SharedWorker.port π | Firefox | 4/29/2014 | Safari | 9/12/2022 | 3058 | |
| api.SharedWorkerGlobalScope π | Firefox | 4/29/2014 | Safari | 9/12/2022 | 3058 | |
| api.SharedWorkerGlobalScope.close π | Firefox | 4/29/2014 | Safari | 9/12/2022 | 3058 | |
| api.SharedWorkerGlobalScope.connect_event π | Firefox | 4/29/2014 | Safari | 9/12/2022 | 3058 | Firefox: Before version 65 the data property of the event object was null; it is now initialized to an empty string, as per spec.Firefox for Android: Before version 65 the data property of the event object was null; it is now initialized to an empty string, as per spec. |
| api.SharedWorkerGlobalScope.name π | Firefox | 4/29/2014 | Safari | 9/12/2022 | 3058 | |
| api.SourceBuffer π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.abort π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.abort_event π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | Chrome: The onabort event handler property is not supported.Chrome Android: The onabort event handler property is not supported.Edge: The onabort event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onabort event handler property is not supported.Opera Android: The onabort event handler property is not supported.Safari: The onabort event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onabort event handler property is not supported.WebView Android: The onabort event handler property is not supported. |
| api.SourceBuffer.appendBuffer π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.appendWindowEnd π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.appendWindowStart π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.buffered π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.changeType π | Firefox | 10/23/2018 | Safari | 3/25/2019 | 153 | Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.error_event π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | Chrome: The onerror event handler property is not supported.Chrome Android: The onerror event handler property is not supported.Edge: The onerror event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onerror event handler property is not supported.Opera Android: The onerror event handler property is not supported.Safari: The onerror event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onerror event handler property is not supported.WebView Android: The onerror event handler property is not supported. |
| api.SourceBuffer.mode π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.remove π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.timestampOffset π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBuffer.update_event π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | Chrome: The onupdate event handler property is not supported.Chrome Android: The onupdate event handler property is not supported.Edge: The onupdate event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onupdate event handler property is not supported.Opera Android: The onupdate event handler property is not supported.Safari: The onupdate event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onupdate event handler property is not supported.WebView Android: The onupdate event handler property is not supported. |
| api.SourceBuffer.updateend_event π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | Chrome: The onupdateend event handler property is not supported.Chrome Android: The onupdateend event handler property is not supported.Edge: The onupdateend event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onupdateend event handler property is not supported.Opera Android: The onupdateend event handler property is not supported.Safari: The onupdateend event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onupdateend event handler property is not supported.WebView Android: The onupdateend event handler property is not supported. |
| api.SourceBuffer.updatestart_event π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | Chrome: The onupdatestart event handler property is not supported.Chrome Android: The onupdatestart event handler property is not supported.Edge: The onupdatestart event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onupdatestart event handler property is not supported.Opera Android: The onupdatestart event handler property is not supported.Safari: The onupdatestart event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onupdatestart event handler property is not supported.WebView Android: The onupdatestart event handler property is not supported. |
| api.SourceBuffer.updating π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBufferList π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.WebView on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBufferList.addsourcebuffer_event π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | Chrome: The onaddsourcebuffer event handler property is not supported.Chrome Android: The onaddsourcebuffer event handler property is not supported.Edge: The onaddsourcebuffer event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onaddsourcebuffer event handler property is not supported.Opera Android: The onaddsourcebuffer event handler property is not supported.Safari: The onaddsourcebuffer event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onaddsourcebuffer event handler property is not supported.WebView Android: The onaddsourcebuffer event handler property is not supported.WebView on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBufferList.length π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.WebView on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SourceBufferList.removesourcebuffer_event π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | Chrome: The onremovesourcebuffer event handler property is not supported.Chrome Android: The onremovesourcebuffer event handler property is not supported.Edge: The onremovesourcebuffer event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onremovesourcebuffer event handler property is not supported.Opera Android: The onremovesourcebuffer event handler property is not supported.Safari: The onremovesourcebuffer event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onremovesourcebuffer event handler property is not supported.WebView Android: The onremovesourcebuffer event handler property is not supported.WebView on iOS: Exposed in Mobile Safari on iPad but not on iPhone. |
| api.SpeechSynthesis π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesis.cancel π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesis.getVoices π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesis.pause π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | Chrome Android: In Android, pause() ends the current utterance. pause() behaves the same as cancel().Firefox for Android: In Android, pause() ends the current utterance. pause() behaves the same as cancel().Quest Browser: In Android, pause() ends the current utterance. pause() behaves the same as cancel().Samsung Internet: In Android, pause() ends the current utterance. pause() behaves the same as cancel(). |
| api.SpeechSynthesis.paused π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesis.pending π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesis.resume π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesis.speak π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesis.speaking π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesis.voiceschanged_event π | Firefox | 9/20/2016 | Safari | 9/12/2022 | 2183 | |
| api.SpeechSynthesisErrorEvent π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisErrorEvent.SpeechSynthesisErrorEvent π | Firefox | 9/20/2016 | Safari | 9/12/2022 | 2183 | |
| api.SpeechSynthesisErrorEvent.error π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisEvent π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisEvent.SpeechSynthesisEvent π | Firefox | 9/20/2016 | Safari | 9/12/2022 | 2183 | |
| api.SpeechSynthesisEvent.charIndex π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisEvent.charLength π | Firefox | 4/19/2017 | Safari | 9/12/2022 | 1972 | |
| api.SpeechSynthesisEvent.elapsedTime π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisEvent.name π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisEvent.utterance π | Firefox | 9/20/2016 | Safari | 9/12/2022 | 2183 | |
| api.SpeechSynthesisUtterance π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.SpeechSynthesisUtterance π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.boundary_event π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | Chrome: The boundary event does not fire as expected. See bug 40715888.Chrome Android: The boundary event does not fire as expected. See bug 40715888.Quest Browser: The boundary event does not fire as expected. See bug 40715888. |
| api.SpeechSynthesisUtterance.end_event π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.error_event π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.lang π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.mark_event π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.pause_event π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.pitch π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.rate π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.resume_event π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.start_event π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.text π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.voice π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisUtterance.volume π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisVoice π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | Firefox: In Firefox, speech synthesis voices do not start loading until after the first call to window.speechSynthesis.getVoices(). A way to mitigate this issue is to call the method at the beginning of page load, then wait a few seconds before calling the method again. Voices will remain loaded until all tabs that have called this method have been closed. |
| api.SpeechSynthesisVoice.default π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisVoice.lang π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisVoice.localService π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisVoice.name π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.SpeechSynthesisVoice.voiceURI π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.StaticRange π | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | Firefox: In Firefox, StaticRange can currently only be used by browser-internal code or code with enhanced permissions; it is not yet exposed to the web. |
| api.StaticRange.StaticRange π | Firefox | 12/10/2019 | Safari | 3/24/2020 | 105 | |
| api.StaticRange.collapsed π | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.StaticRange.endContainer π | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.StaticRange.endOffset π | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.StaticRange.startContainer π | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.StaticRange.startOffset π | Safari | 3/27/2017 | Firefox | 9/3/2019 | 890 | |
| api.StereoPannerNode π | Firefox | 3/31/2015 | Safari | 4/26/2021 | 2218 | |
| api.StereoPannerNode.StereoPannerNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.StereoPannerNode.pan π | Firefox | 3/31/2015 | Safari | 4/26/2021 | 2218 | |
| api.Storage π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Storage.clear π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Storage.getItem π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Storage.key π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Storage.length π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Storage.removeItem π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Storage.setItem π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.StorageEvent π | Safari | 6/8/2009 | Firefox | 6/5/2012 | 1093 | |
| api.StorageEvent.StorageEvent | Firefox | 6/5/2012 | Safari | 7/25/2012 | 50 | |
| api.StorageEvent.initStorageEvent π | Safari | 6/8/2009 | Firefox | 6/5/2012 | 1093 | |
| api.StorageEvent.key π | Safari | 6/8/2009 | Firefox | 6/5/2012 | 1093 | |
| api.StorageEvent.newValue π | Safari | 6/8/2009 | Firefox | 6/5/2012 | 1093 | |
| api.StorageEvent.oldValue π | Safari | 6/8/2009 | Firefox | 6/5/2012 | 1093 | |
| api.StorageEvent.storageArea π | Safari | 6/8/2009 | Firefox | 6/5/2012 | 1093 | |
| api.StorageEvent.url π | Safari | 6/7/2010 | Firefox | 6/5/2012 | 729 | |
| api.StorageManager π | Firefox | 11/14/2017 | Safari | 12/13/2021 | 1490 | |
| api.StorageManager.estimate π | Firefox | 11/14/2017 | Safari | 9/18/2023 | 2134 | |
| api.StorageManager.getDirectory π | Safari | 12/13/2021 | Firefox | 3/14/2023 | 456 | |
| api.StorageManager.persist π | Firefox | 11/14/2017 | Safari | 12/13/2021 | 1490 | |
| api.StorageManager.persisted π | Firefox | 11/14/2017 | Safari | 12/13/2021 | 1490 | |
| api.StyleSheet π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheet.disabled π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheet.href π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheet.media π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheet.ownerNode π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheet.parentStyleSheet π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheet.title π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheet.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheetList π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheetList.item π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.StyleSheetList.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.SubmitEvent π | Firefox | 4/7/2020 | Safari | 9/20/2021 | 531 | |
| api.SubmitEvent.SubmitEvent π | Firefox | 4/7/2020 | Safari | 9/20/2021 | 531 | |
| api.SubmitEvent.submitter π | Firefox | 4/7/2020 | Safari | 3/14/2022 | 706 | Safari: Property is not set for <button> elements. See bug 229660.Safari on iOS: Property is not set for <button> elements. See bug 229660.WebView on iOS: Property is not set for <button> elements. See bug 229660. |
| api.SubtleCrypto π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | Node.js: Available as a part of the crypto module. |
| api.SubtleCrypto.decrypt π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Deno: Not supported: AES-CTR, AES-GCM.Deno: Not supported: AES-CTR, AES-CBC, AES-GCM.Edge: Not supported: AES-CTR.Internet Explorer: Returns CryptoOperation instead of Promise |
| api.SubtleCrypto.deriveBits π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | Deno: Not supported: ECDH.Edge: Not supported: ECDH.Edge: Not supported: HKDF, PBKDF2.Node.js: Supports: NODE-DHNode.js: Supports: NODE-SCRYPT |
| api.SubtleCrypto.deriveBits.x25519 π | Safari | 9/18/2023 | Firefox | 9/3/2024 | 351 | Node.js: Marked as 'Stability 1' - Experimental. |
| api.SubtleCrypto.deriveKey π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | Edge: Not supported: ECDH.Edge: Not supported: HKDF, PBKDF2.Node.js: Supports: NODE-DHNode.js: Supports: NODE-SCRYPT |
| api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_aes π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_hkdf π | Safari | 9/19/2017 | Firefox | 10/24/2023 | 2226 | |
| api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_hmac π | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | |
| api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_pbkdf2 π | Safari | 9/19/2017 | Firefox | 10/24/2023 | 2226 | |
| api.SubtleCrypto.deriveKey.x25519 π | Safari | 9/18/2023 | Firefox | 9/3/2024 | 351 | Node.js: Marked as 'Stability 1' - Experimental. |
| api.SubtleCrypto.digest π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Chrome: Before version 41, Chrome expected the algorithm parameter to be an object.Chrome Android: Before version 41, Chrome Android expected the algorithm parameter to be an object.Edge: Not supported: SHA-1.Internet Explorer: Returns CryptoOperation instead of PromiseOpera: Before version 28, Opera expected the algorithm parameter to be an object.Opera Android: Before version 28, Opera Android expected the algorithm parameter to be an object.Samsung Internet: Before version 4.0, Samsung Internet expected the algorithm parameter to be an object.WebView Android: Before version 41, WebView Android expected the algorithm parameter to be an object. |
| api.SubtleCrypto.encrypt π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Deno: Not supported: AES-CTR, AES-GCM.Deno: Not supported: AES-CTR, AES-CBC, AES-GCM.Edge: Not supported: AES-CTR.Internet Explorer: Returns CryptoOperation instead of Promise |
| api.SubtleCrypto.exportKey π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Deno: Not supported: ECDSA, ECDH.Deno: Not supported: ECDSA, ECDH, AES-CTR, AES-CBC, AES-GCM, AES-KW.Edge: Not supported: RSA-PSS, ECDSA, ECDH.Edge: Not supported: AES-CTR.Internet Explorer: Returns KeyOperation instead of PromiseNode.js: Supports: NODE-DSANode.js: Supports: NODE-DHNode.js: Supports: NODE-SCRYPT |
| api.SubtleCrypto.exportKey.ed25519 π | Safari | 9/18/2023 | Firefox | 8/6/2024 | 323 | Node.js: Marked as 'Stability 1' - Experimental. |
| api.SubtleCrypto.exportKey.x25519 π | Safari | 9/18/2023 | Firefox | 9/3/2024 | 351 | Node.js: Marked as 'Stability 1' - Experimental. |
| api.SubtleCrypto.generateKey π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Deno: Not supported: ECDSA P-521, ECDH P-521.Deno: Not supported: RSA-OAEP, ECDSA P-521, ECDH, AES-CTR, AES-CBC, AES-GCM, AES-KW.Edge: Not supported: RSA-PSS, ECDSA, ECDH.Edge: Not supported: AES-CTR.Internet Explorer: Returns KeyOperation instead of PromiseNode.js: Supports: NODE-DSANode.js: Supports: NODE-DH |
| api.SubtleCrypto.generateKey.ed25519 π | Safari | 9/18/2023 | Firefox | 8/6/2024 | 323 | Node.js: Marked as 'Stability 1' - Experimental. |
| api.SubtleCrypto.generateKey.x25519 π | Safari | 9/18/2023 | Firefox | 9/3/2024 | 351 | Node.js: Marked as 'Stability 1' - Experimental. |
| api.SubtleCrypto.importKey π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Deno: Not supported: ECDSA P-521, ECDH P-521.Deno: Not supported: ECDH.Deno: Not supported: ECDSA, ECDH, AES-CTR, AES-CBC, AES-GCM, AES-KW.Edge: Not supported: RSA-PSS, ECDSA, ECDH.Edge: Not supported: AES-CTR, HKDF, PBKDF2.Internet Explorer: Returns KeyOperation instead of PromiseNode.js: Supports: NODE-DSANode.js: Supports: NODE-DHNode.js: Supports: NODE-SCRYPT |
| api.SubtleCrypto.importKey.ed25519 π | Safari | 9/18/2023 | Firefox | 8/6/2024 | 323 | Node.js: Marked as 'Stability 1' - Experimental. |
| api.SubtleCrypto.importKey.x25519 π | Safari | 9/18/2023 | Firefox | 9/3/2024 | 351 | Node.js: Marked as 'Stability 1' - Experimental. |
| api.SubtleCrypto.secure_context_required | Firefox | 4/7/2020 | Safari | 9/20/2021 | 531 | |
| api.SubtleCrypto.sign π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Edge: Not supported: RSA-PSS, ECDSA.Internet Explorer: Returns CryptoOperation instead of PromiseNode.js: Supports: NODE-DSA |
| api.SubtleCrypto.sign.ed25519 π | Safari | 9/18/2023 | Firefox | 8/6/2024 | 323 | Node.js: Marked as 'Stability 1' - Experimental.Safari: Generates randomized signatures as per draft-irtf-cfrg-det-sigs-with-noise, instead of deterministic signatures as per RFC 8032.Safari on iOS: Generates randomized signatures as per draft-irtf-cfrg-det-sigs-with-noise, instead of deterministic signatures as per RFC 8032.WebView on iOS: Generates randomized signatures as per draft-irtf-cfrg-det-sigs-with-noise, instead of deterministic signatures as per RFC 8032. |
| api.SubtleCrypto.unwrapKey π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Edge: Not supported: AES-CTR.Internet Explorer: Returns KeyOperation instead of PromiseNode.js: Supports: NODE-DSANode.js: Supports: NODE-DH |
| api.SubtleCrypto.verify π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Deno: Not supported: ECDSA, HMAC.Edge: Not supported: RSA-PSS, ECDSA.Internet Explorer: Returns CryptoOperation instead of PromiseNode.js: Supports: NODE-DSA |
| api.SubtleCrypto.verify.ed25519 π | Safari | 9/18/2023 | Firefox | 8/6/2024 | 323 | Node.js: Marked as 'Stability 1' - Experimental. |
| api.SubtleCrypto.worker_support | Firefox | 8/2/2016 | Safari | 9/19/2017 | 413 | |
| api.SubtleCrypto.wrapKey π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Edge: Not supported: AES-CTR.Internet Explorer: Returns KeyOperation instead of Promise |
| api.Text π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Text.Text π | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | |
| api.Text.assignedSlot π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.Text.splitText π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Before Chrome 30, the offset parameter was optional.Chrome Android: Before Chrome Android 30, the offset parameter was optional.Quest Browser: Before Quest Browser 5.0, the offset parameter was optional.Opera: Before Opera 17, the offset parameter was optional.Opera Android: Before Opera 17, the offset parameter was optional.Safari: The offset parameter is optional.Safari on iOS: The offset parameter is optional.Samsung Internet: Before Samsung Internet 2.0, the offset parameter was optional.WebView Android: Before version 4.4, the offset parameter was optional.WebView on iOS: The offset parameter is optional. |
| api.Text.wholeText π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.TextDecoder π | Firefox | 2/19/2013 | Safari | 3/27/2017 | 1497 | Firefox: Implemented a slightly different version of the spec.Firefox for Android: Implemented a slightly different version of the spec.Node.js: Available as a part of the util module. |
| api.TextDecoder.TextDecoder π | Firefox | 2/19/2013 | Safari | 3/27/2017 | 1497 | Firefox: Implemented a slightly different version of the spec.Firefox for Android: Implemented a slightly different version of the spec. |
| api.TextDecoder.decode π | Firefox | 2/19/2013 | Safari | 3/27/2017 | 1497 | Deno: Before Deno 1.11, passing option.stream is not supported and results in an error being thrown.Firefox: Implemented a slightly different version of the spec.Firefox for Android: Implemented a slightly different version of the spec. |
| api.TextDecoder.encoding π | Firefox | 2/19/2013 | Safari | 3/27/2017 | 1497 | Firefox: Implemented a slightly different version of the spec.Firefox for Android: Implemented a slightly different version of the spec. |
| api.TextDecoder.fatal π | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.TextDecoder.ignoreBOM π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | |
| api.TextDecoder.worker_support | Firefox | 4/2/2013 | Safari | 3/27/2017 | 1455 | |
| api.TextDecoderStream π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | Node.js: Available as a part of the stream/web module. |
| api.TextDecoderStream.TextDecoderStream π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextDecoderStream.encoding π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextDecoderStream.fatal π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextDecoderStream.ignoreBOM π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextDecoderStream.readable π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextDecoderStream.writable π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextEncoder π | Firefox | 1/8/2013 | Safari | 3/27/2017 | 1539 | Node.js: Available as a part of the util module. |
| api.TextEncoder.TextEncoder π | Firefox | 1/8/2013 | Safari | 3/27/2017 | 1539 | |
| api.TextEncoder.encode π | Firefox | 1/8/2013 | Safari | 3/27/2017 | 1539 | |
| api.TextEncoder.encodeInto π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| api.TextEncoder.encoding π | Firefox | 1/8/2013 | Safari | 3/27/2017 | 1539 | |
| api.TextEncoder.worker_support | Firefox | 4/2/2013 | Safari | 3/27/2017 | 1455 | |
| api.TextEncoderStream π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | Node.js: Available as a part of the stream/web module. |
| api.TextEncoderStream.TextEncoderStream π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextEncoderStream.encoding π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextEncoderStream.readable π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextEncoderStream.writable π | Safari | 4/26/2021 | Firefox | 9/20/2022 | 512 | |
| api.TextEvent π | Safari | 10/26/2007 | Firefox | 8/6/2024 | 6129 | |
| api.TextEvent.data π | Safari | 10/26/2007 | Firefox | 8/6/2024 | 6129 | |
| api.TextEvent.initTextEvent π | Safari | 10/26/2007 | Firefox | 8/6/2024 | 6129 | |
| api.TextMetrics π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.TextMetrics.actualBoundingBoxAscent π | Safari | 4/12/2018 | Firefox | 3/10/2020 | 698 | |
| api.TextMetrics.actualBoundingBoxDescent π | Safari | 4/12/2018 | Firefox | 3/10/2020 | 698 | |
| api.TextMetrics.actualBoundingBoxLeft π | Safari | 4/12/2018 | Firefox | 3/10/2020 | 698 | |
| api.TextMetrics.actualBoundingBoxRight π | Safari | 4/12/2018 | Firefox | 3/10/2020 | 698 | |
| api.TextMetrics.alphabeticBaseline π | Safari | 4/12/2018 | Firefox | 8/1/2023 | 1937 | |
| api.TextMetrics.emHeightAscent π | Safari | 4/12/2018 | Firefox | 9/26/2023 | 1993 | |
| api.TextMetrics.emHeightDescent π | Safari | 4/12/2018 | Firefox | 9/26/2023 | 1993 | |
| api.TextMetrics.fontBoundingBoxAscent π | Safari | 4/12/2018 | Firefox | 8/1/2023 | 1937 | |
| api.TextMetrics.fontBoundingBoxDescent π | Safari | 4/12/2018 | Firefox | 8/1/2023 | 1937 | |
| api.TextMetrics.hangingBaseline π | Safari | 4/12/2018 | Firefox | 8/1/2023 | 1937 | |
| api.TextMetrics.ideographicBaseline π | Safari | 4/12/2018 | Firefox | 8/1/2023 | 1937 | |
| api.TextMetrics.width π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| api.TextTrack π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | Firefox: Firefox versions before Firefox 50 didn't display captions when playing media without one or more video tracks being played. |
| api.TextTrack.activeCues π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | Firefox: Starting in Firefox 69, cues are no longer incorrectly loaded when the TextTrack's mode is disabled; if that's the case, the returned list is empty. |
| api.TextTrack.addCue π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrack.cuechange_event π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrack.cues π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | Firefox: Starting in Firefox 69, cues are no longer incorrectly loaded when the TextTrack's mode is disabled; if that's the case, the returned list is empty. |
| api.TextTrack.id π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.TextTrack.inBandMetadataTrackDispatchType π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.TextTrack.kind π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrack.label π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrack.language π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrack.mode π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | Firefox: Before Firefox 52, using JavaScript to change the mode of a text track that's part of a media element would send one change event to the element's textTracks TextTrackList for each change, even if multiple changes are made in a single pass through the Firefox event loop. Starting in Firefox 52, these changes are reflected by a single event. |
| api.TextTrack.removeCue π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCue π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCue.endTime π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCue.enter_event π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCue.exit_event π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCue.id π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCue.pauseOnExit π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCue.startTime π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCue.track π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCueList π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCueList.getCueById π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackCueList.length π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackList π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackList.addtrack_event π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackList.change_event π | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | |
| api.TextTrackList.getTrackById π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.TextTrackList.length π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.TextTrackList.removetrack_event π | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | |
| api.TimeRanges π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| api.TimeRanges.end π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| api.TimeRanges.length π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| api.TimeRanges.start π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| api.ToggleEvent π | Safari | 9/18/2023 | Firefox | 11/21/2023 | 64 | |
| api.ToggleEvent.ToggleEvent π | Safari | 9/18/2023 | Firefox | 11/21/2023 | 64 | |
| api.ToggleEvent.newState π | Safari | 9/18/2023 | Firefox | 11/21/2023 | 64 | |
| api.ToggleEvent.oldState π | Safari | 9/18/2023 | Firefox | 11/21/2023 | 64 | |
| api.TrackEvent π | Safari | 7/25/2012 | Firefox | 2/4/2014 | 559 | |
| api.TrackEvent.TrackEvent π | Safari | 7/25/2012 | Firefox | 2/4/2014 | 559 | |
| api.TrackEvent.track π | Safari | 7/25/2012 | Firefox | 2/4/2014 | 559 | |
| api.TransformStream π | Safari | 4/26/2021 | Firefox | 6/28/2022 | 428 | Node.js: Available as a part of the stream/web module. |
| api.TransformStream.TransformStream π | Safari | 4/26/2021 | Firefox | 6/28/2022 | 428 | |
| api.TransformStream.readable π | Safari | 4/26/2021 | Firefox | 6/28/2022 | 428 | |
| api.TransformStream.writable π | Safari | 4/26/2021 | Firefox | 6/28/2022 | 428 | |
| api.TransformStreamDefaultController π | Safari | 4/26/2021 | Firefox | 6/28/2022 | 428 | Deno: TransformStreamDefaultController is not exposed on the global scope.Node.js: Available as a part of the stream/web module. |
| api.TransformStreamDefaultController.desiredSize π | Safari | 4/26/2021 | Firefox | 6/28/2022 | 428 | |
| api.TransformStreamDefaultController.enqueue π | Safari | 4/26/2021 | Firefox | 6/28/2022 | 428 | |
| api.TransformStreamDefaultController.error π | Safari | 4/26/2021 | Firefox | 6/28/2022 | 428 | |
| api.TransformStreamDefaultController.terminate π | Safari | 4/26/2021 | Firefox | 6/28/2022 | 428 | |
| api.TransitionEvent π | Firefox | 3/22/2011 | Safari | 10/22/2013 | 945 | |
| api.TransitionEvent.TransitionEvent π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| api.TransitionEvent.elapsedTime π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.TransitionEvent.propertyName π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| api.TransitionEvent.pseudoElement π | Safari | 7/25/2012 | Firefox | 8/6/2013 | 377 | |
| api.TreeWalker π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.currentNode π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.filter π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.firstChild π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.lastChild π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.nextNode π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.nextSibling π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.parentNode π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.previousNode π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.previousSibling π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.root π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.TreeWalker.whatToShow π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.UIEvent π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.UIEvent.UIEvent π | Firefox | 3/13/2012 | Safari | 10/22/2013 | 588 | |
| api.UIEvent.detail π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: Always 0 on click and dblclick events. On mousedown and mouseup events, the count is not unique to the element, but is rather the global click count for the current document -- even across refreshes. |
| api.UIEvent.initUIEvent π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.UIEvent.view π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.UIEvent.which π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: Only supported for KeyboardEvent and MouseEvent, not all UIEvent objects.Firefox: On mousemove events, the which property is incorrectly always set to 1.Firefox for Android: On mousemove events, the which property is incorrectly always set to 1.Internet Explorer: Only supported for KeyboardEvent and MouseEvent, not all UIEvent objects.Opera: Only supported for KeyboardEvent and MouseEvent, not all UIEvent objects.Opera Android: Only supported for KeyboardEvent and MouseEvent, not all UIEvent objects. |
| api.URL π | Firefox | 2/19/2013 | Safari | 10/22/2013 | 245 | Firefox: Before version 57, Firefox had a bug whereby single quotes contained in URLs are escaped when accessed via URL APIs (see bug 1386683).Firefox for Android: Before version 57, Firefox for Android had a bug whereby single quotes contained in URLs are escaped when accessed via URL APIs (see bug 1386683).Node.js: Available as a part of the url module. |
| api.URL.URL π | Firefox | 12/10/2013 | Safari | 4/26/2021 | 2694 | Edge: Before Edge 79, query arguments in the base URL argument are removed when calling the URL constructor.Firefox: Before version 122, host, hostname, and port were not parsed for unknown protocols/schemes.Firefox for Android: Before version 122, host, hostname, and port were not parsed for unknown protocols/schemes.Safari: Before Safari 14.1, calling the URL constructor with a base URL whose value is undefined caused Safari to throw a TypeError, see bug 216841.Safari on iOS: Before Safari on iOS 14.1, calling the URL constructor with a base URL whose value is undefined caused Safari on iOS to throw a TypeError, see bug 216841.WebView on iOS: Before WebView on iOS 14.1, calling the URL constructor with a base URL whose value is undefined caused WebView on iOS to throw a TypeError, see bug 216841. |
| api.URL.canParse_static π | Firefox | 7/4/2023 | Safari | 9/18/2023 | 76 | |
| api.URL.createObjectURL_static π | Safari | 7/25/2012 | Firefox | 2/19/2013 | 209 | Firefox: createObjectURL() is no longer available within the context of a ServiceWorker.Firefox for Android: createObjectURL() is no longer available within the context of a ServiceWorker.Internet Explorer: If the underlying object does not have a content type set, using this URL as the src of an img tag fails intermittently with error DOM7009. |
| api.URL.hash π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | |
| api.URL.host π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | |
| api.URL.hostname π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| api.URL.href π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| api.URL.origin π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | Firefox: Results for URL using the blob scheme incorrectly returned null.Firefox for Android: Results for URL using the blob scheme incorrectly returned null. |
| api.URL.parse_static π | Firefox | 5/14/2024 | Safari | 9/16/2024 | 125 | |
| api.URL.password π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| api.URL.pathname π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | Firefox: Before Firefox 53, pathname and search returned wrong values for custom protocols. Given protocol:host/x?a=true&b=false, pathname would return "/x?a=true&b=false" and search would return "", rather than "/x" and "?a=true&b=false" respectively. See bug 1310483.Firefox for Android: Before Firefox for Android 53, pathname and search returned wrong values for custom protocols. Given protocol:host/x?a=true&b=false, pathname would return "/x?a=true&b=false" and search would return "", rather than "/x" and "?a=true&b=false" respectively. See bug 1310483. |
| api.URL.port π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| api.URL.protocol π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| api.URL.revokeObjectURL_static π | Safari | 7/25/2012 | Firefox | 2/19/2013 | 209 | Firefox: revokeObjectURL() is no longer available within the context of a ServiceWorker.Firefox for Android: revokeObjectURL() is no longer available within the context of a ServiceWorker. |
| api.URL.search π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | Firefox: Before Firefox 53, pathname and search returned wrong values for custom protocols. Given protocol:host/x?a=true&b=false, pathname would return "/x?a=true&b=false" and search would return "", rather than "/x" and "?a=true&b=false" respectively. See bug 1310483.Firefox for Android: Before Firefox for Android 53, pathname and search returned wrong values for custom protocols. Given protocol:host/x?a=true&b=false, pathname would return "/x?a=true&b=false" and search would return "", rather than "/x" and "?a=true&b=false" respectively. See bug 1310483. |
| api.URL.searchParams π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | Node.js: An object matching the URLSearchParams interface is returned, but it contains no data. |
| api.URL.toJSON π | Firefox | 6/13/2017 | Safari | 9/19/2017 | 98 | |
| api.URL.toString π | Safari | 10/22/2013 | Firefox | 6/13/2017 | 1330 | |
| api.URL.username π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| api.URLSearchParams π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | Firefox: Before version 57 single quotes in URLs were escaped (see bug 1386683).Firefox for Android: Before version 57 single quotes in URLs were escaped (see bug 1386683).Node.js: Available as a part of the url module.Node.js: Only available as an internal instance, but can be accessed via the searchParams property of the URL interface.Node.js: Available as a part of the url module. |
| api.URLSearchParams.@@iterator π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.URLSearchParams.URLSearchParams π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.URLSearchParams.URLSearchParams.USVString | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.URLSearchParams.URLSearchParams.record | Firefox | 6/13/2017 | Safari | 9/19/2017 | 98 | |
| api.URLSearchParams.URLSearchParams.sequence | Firefox | 4/19/2017 | Safari | 9/19/2017 | 153 | |
| api.URLSearchParams.append π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.URLSearchParams.delete π | Firefox | 4/29/2014 | Safari | 9/16/2020 | 2332 | Safari: Removing a non-existent query parameter doesn't remove ? from the URL. See bug 193022.Safari on iOS: Removing a non-existent query parameter doesn't remove ? from the URL. See bug 193022.WebView on iOS: Removing a non-existent query parameter doesn't remove ? from the URL. See bug 193022. |
| api.URLSearchParams.delete.value_parameter | Firefox | 7/4/2023 | Safari | 9/18/2023 | 76 | |
| api.URLSearchParams.entries π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.URLSearchParams.forEach π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.URLSearchParams.get π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.URLSearchParams.getAll π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.URLSearchParams.has π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.URLSearchParams.has.value_parameter | Firefox | 7/4/2023 | Safari | 9/18/2023 | 76 | |
| api.URLSearchParams.keys π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.URLSearchParams.set π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.URLSearchParams.size π | Firefox | 4/11/2023 | Safari | 9/18/2023 | 160 | |
| api.URLSearchParams.sort π | Firefox | 6/13/2017 | Safari | 9/19/2017 | 98 | |
| api.URLSearchParams.toString π | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| api.URLSearchParams.values π | Firefox | 1/26/2016 | Safari | 3/27/2017 | 426 | |
| api.UserActivation π | Safari | 3/27/2023 | Firefox | 11/21/2023 | 239 | |
| api.UserActivation.hasBeenActive π | Safari | 3/27/2023 | Firefox | 11/21/2023 | 239 | |
| api.UserActivation.isActive π | Safari | 3/27/2023 | Firefox | 11/21/2023 | 239 | |
| api.VTTCue π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.VTTCue.VTTCue π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| api.VTTCue.align π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.VTTCue.getCueAsHTML π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.VTTCue.line π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.VTTCue.lineAlign π | Firefox | 7/22/2014 | Safari | 4/26/2021 | 2470 | |
| api.VTTCue.position π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.VTTCue.positionAlign π | Firefox | 7/22/2014 | Safari | 4/26/2021 | 2470 | |
| api.VTTCue.region π | Firefox | 3/13/2018 | Safari | 4/26/2021 | 1140 | |
| api.VTTCue.size π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.VTTCue.snapToLines π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.VTTCue.text π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.VTTCue.text.all_html_character_references | Safari | 5/13/2024 | Firefox | 6/11/2024 | 29 | |
| api.VTTCue.vertical π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| api.VTTRegion π | Safari | 10/22/2013 | Firefox | 3/13/2018 | 1603 | |
| api.VTTRegion.VTTRegion π | Safari | 10/22/2013 | Firefox | 3/13/2018 | 1603 | |
| api.VTTRegion.id π | Safari | 10/22/2013 | Firefox | 3/13/2018 | 1603 | |
| api.VTTRegion.lines π | Firefox | 3/13/2018 | Safari | 3/25/2019 | 377 | |
| api.VTTRegion.regionAnchorX π | Safari | 10/22/2013 | Firefox | 3/13/2018 | 1603 | |
| api.VTTRegion.regionAnchorY π | Safari | 10/22/2013 | Firefox | 3/13/2018 | 1603 | |
| api.VTTRegion.scroll π | Safari | 10/22/2013 | Firefox | 3/13/2018 | 1603 | |
| api.VTTRegion.viewportAnchorX π | Safari | 10/22/2013 | Firefox | 3/13/2018 | 1603 | |
| api.VTTRegion.viewportAnchorY π | Safari | 10/22/2013 | Firefox | 3/13/2018 | 1603 | |
| api.VTTRegion.width π | Safari | 10/22/2013 | Firefox | 3/13/2018 | 1603 | |
| api.ValidityState π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.ValidityState.badInput π | Safari | 10/22/2013 | Firefox | 4/29/2014 | 189 | |
| api.ValidityState.customError π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.ValidityState.patternMismatch π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.ValidityState.rangeOverflow π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.ValidityState.rangeUnderflow π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.ValidityState.stepMismatch π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.ValidityState.tooLong π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Edge: Not supported in the unlikely case of the value being initially set too long, and then changed by the user to a still incorrect state. Per caniuse.com.Firefox: Not supported in the unlikely case of the value being initially set too long, and then changed by the user to a still incorrect state. Per caniuse.com. |
| api.ValidityState.tooShort π | Safari | 9/20/2016 | Firefox | 1/24/2017 | 126 | |
| api.ValidityState.typeMismatch π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.ValidityState.valid π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.ValidityState.valueMissing π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| api.VideoColorSpace π | Safari | 3/14/2022 | Firefox | 9/3/2024 | 904 | |
| api.VideoColorSpace.VideoColorSpace π | Safari | 9/18/2023 | Firefox | 9/3/2024 | 351 | |
| api.VideoColorSpace.fullRange π | Safari | 3/14/2022 | Firefox | 9/3/2024 | 904 | |
| api.VideoColorSpace.matrix π | Safari | 3/14/2022 | Firefox | 9/3/2024 | 904 | |
| api.VideoColorSpace.primaries π | Safari | 3/14/2022 | Firefox | 9/3/2024 | 904 | |
| api.VideoColorSpace.toJSON π | Safari | 3/14/2022 | Firefox | 9/3/2024 | 904 | |
| api.VideoColorSpace.transfer π | Safari | 3/14/2022 | Firefox | 9/3/2024 | 904 | |
| api.VideoDecoder π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.VideoDecoder π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.close π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.configure π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.decode π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.decodeQueueSize π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.dequeue_event π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.flush π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.isConfigSupported_static π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.reset π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoDecoder.state π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.VideoEncoder π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.close π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.configure π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.dequeue_event π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.encode π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.encodeQueueSize π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.flush π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.isConfigSupported_static π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.reset π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoEncoder.state π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.VideoFrame π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.allocationSize π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.clone π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.close π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.codedHeight π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.codedRect π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.codedWidth π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.colorSpace π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.copyTo π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.displayHeight π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.displayWidth π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.duration π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.format π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.timestamp π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoFrame.visibleRect π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| api.VideoPlaybackQuality π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+. |
| api.VideoPlaybackQuality.creationTime π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+. |
| api.VideoPlaybackQuality.droppedVideoFrames π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+. |
| api.VideoPlaybackQuality.totalVideoFrames π | Safari | 10/16/2014 | Firefox | 11/3/2015 | 383 | Internet Explorer: Only works on Windows 8+. |
| api.VideoTrack π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrack.id π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrack.kind π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrack.label π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrack.language π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrack.selected π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrackList π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrackList.addtrack_event π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrackList.change_event π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrackList.getTrackById π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrackList.length π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrackList.removetrack_event π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VideoTrackList.selectedIndex π | Safari | 10/22/2013 | Firefox | 10/14/2014 | 357 | |
| api.VisualViewport π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | |
| api.VisualViewport.height π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | |
| api.VisualViewport.offsetLeft π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | |
| api.VisualViewport.offsetTop π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | |
| api.VisualViewport.pageLeft π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | |
| api.VisualViewport.pageTop π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | |
| api.VisualViewport.resize_event π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | Chrome: The onresize event handler property is not supported.Chrome Android: The onresize event handler property is not supported.Quest Browser: The onresize event handler property is not supported.Opera: The onresize event handler property is not supported.Opera Android: The onresize event handler property is not supported.WebView Android: The onresize event handler property is not supported. |
| api.VisualViewport.scale π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | |
| api.VisualViewport.scroll_event π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | Chrome: The onscroll event handler property is not supported.Chrome Android: The onscroll event handler property is not supported.Quest Browser: The onscroll event handler property is not supported.Opera: The onscroll event handler property is not supported.Opera Android: The onscroll event handler property is not supported.WebView Android: The onscroll event handler property is not supported. |
| api.VisualViewport.width π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | |
| api.WEBGL_color_buffer_float π | Firefox | 6/10/2014 | Safari | 9/16/2020 | 2290 | |
| api.WEBGL_compressed_texture_astc π | Firefox | 4/19/2017 | Safari | 9/17/2018 | 516 | |
| api.WEBGL_compressed_texture_astc.getSupportedProfiles π | Firefox | 4/19/2017 | Safari | 9/17/2018 | 516 | |
| api.WEBGL_compressed_texture_s3tc π | Firefox | 6/25/2013 | Safari | 10/16/2014 | 478 | |
| api.WEBGL_compressed_texture_s3tc_srgb π | Firefox | 8/8/2017 | Safari | 4/26/2021 | 1357 | |
| api.WEBGL_debug_renderer_info π | Safari | 3/21/2016 | Firefox | 4/19/2017 | 394 | Firefox: Deprecated, and may be removed in a future release (see bug 1722782).Firefox for Android: Deprecated, and may be removed in a future release (see bug 1722782). |
| api.WEBGL_debug_shaders π | Firefox | 9/28/2017 | Safari | 9/16/2020 | 1084 | |
| api.WEBGL_debug_shaders.getTranslatedShaderSource π | Firefox | 9/28/2017 | Safari | 9/16/2020 | 1084 | |
| api.WEBGL_depth_texture π | Firefox | 6/25/2013 | Safari | 10/16/2014 | 478 | |
| api.WEBGL_draw_buffers π | Firefox | 3/18/2014 | Safari | 9/30/2015 | 561 | |
| api.WEBGL_draw_buffers.drawBuffersWEBGL π | Firefox | 3/18/2014 | Safari | 9/30/2015 | 561 | |
| api.WEBGL_lose_context π | Firefox | 6/25/2013 | Safari | 10/16/2014 | 478 | |
| api.WEBGL_lose_context.loseContext π | Firefox | 6/25/2013 | Safari | 10/16/2014 | 478 | |
| api.WEBGL_lose_context.restoreContext π | Firefox | 6/25/2013 | Safari | 10/16/2014 | 478 | |
| api.WakeLock π | Safari | 3/27/2023 | Firefox | 5/14/2024 | 414 | Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545. |
| api.WakeLock.request π | Safari | 3/27/2023 | Firefox | 5/14/2024 | 414 | Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545. |
| api.WakeLockSentinel π | Safari | 3/27/2023 | Firefox | 5/14/2024 | 414 | Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545. |
| api.WakeLockSentinel.release π | Safari | 3/27/2023 | Firefox | 5/14/2024 | 414 | Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545. |
| api.WakeLockSentinel.release_event π | Safari | 3/27/2023 | Firefox | 5/14/2024 | 414 | Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545. |
| api.WakeLockSentinel.released π | Safari | 3/27/2023 | Firefox | 5/14/2024 | 414 | Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545. |
| api.WakeLockSentinel.type π | Safari | 3/27/2023 | Firefox | 5/14/2024 | 414 | Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545. |
| api.WaveShaperNode π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.WaveShaperNode.WaveShaperNode π | Firefox | 4/19/2017 | Safari | 4/26/2021 | 1468 | |
| api.WaveShaperNode.curve π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| api.WaveShaperNode.oversample π | Safari | 7/25/2012 | Firefox | 12/10/2013 | 503 | |
| api.WebGL2RenderingContext π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.activeTexture π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.attachShader π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.beginQuery π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.beginTransformFeedback π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindAttribLocation π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindBuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindBufferBase π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindBufferRange π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindFramebuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindRenderbuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindSampler π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindTexture π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindTransformFeedback π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bindVertexArray π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.blendColor π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.blendEquation π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.blendEquationSeparate π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.blendFunc π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.blendFuncSeparate π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.blitFramebuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bufferData π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.bufferSubData π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.canvas π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.checkFramebufferStatus π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.clear π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.clearBufferfi π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.clearBufferfv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.clearBufferiv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.clearBufferuiv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.clearColor π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.clearDepth π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.clearStencil π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.clientWaitSync π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.colorMask π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.compileShader π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.compressedTexImage2D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.compressedTexImage3D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.compressedTexSubImage2D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.compressedTexSubImage3D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.copyBufferSubData π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.copyTexImage2D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.copyTexSubImage2D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.copyTexSubImage3D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createBuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createFramebuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createProgram π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createQuery π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createRenderbuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createSampler π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createShader π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createTexture π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createTransformFeedback π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.createVertexArray π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.cullFace π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteBuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteFramebuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteProgram π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteQuery π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteRenderbuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteSampler π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteShader π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteSync π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteTexture π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteTransformFeedback π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.deleteVertexArray π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.depthFunc π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.depthMask π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.depthRange π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.detachShader π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.disable π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.disableVertexAttribArray π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.drawArrays π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.drawArraysInstanced π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.drawBuffers π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.drawElements π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.drawElementsInstanced π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.drawRangeElements π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.drawingBufferColorSpace π | Safari | 3/27/2023 | Firefox | 10/29/2024 | 582 | Firefox: Accidental early exposure with no functionality.Firefox for Android: Accidental early exposure with no functionality. |
| api.WebGL2RenderingContext.drawingBufferHeight π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.drawingBufferWidth π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.enable π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.enableVertexAttribArray π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.endQuery π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.endTransformFeedback π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.fenceSync π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.finish π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.flush π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.framebufferRenderbuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.framebufferTexture2D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.framebufferTextureLayer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.frontFace π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.generateMipmap π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getActiveAttrib π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getActiveUniform π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getActiveUniformBlockName π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getActiveUniformBlockParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getActiveUniforms π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getAttachedShaders π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getAttribLocation π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getBufferParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getBufferSubData π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getContextAttributes π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getError π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getExtension π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getFragDataLocation π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getFramebufferAttachmentParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getIndexedParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getInternalformatParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getProgramInfoLog π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getProgramParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getQuery π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getQueryParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getRenderbufferParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getSamplerParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getShaderInfoLog π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getShaderParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getShaderPrecisionFormat π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getShaderSource π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getSupportedExtensions π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getSyncParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getTexParameter π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getTransformFeedbackVarying π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getUniform π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getUniformBlockIndex π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getUniformIndices π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getUniformLocation π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getVertexAttrib π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.getVertexAttribOffset π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.hint π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.invalidateFramebuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.invalidateSubFramebuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isBuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isContextLost π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isEnabled π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isFramebuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isProgram π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isQuery π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isRenderbuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isSampler π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isShader π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isSync π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isTexture π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isTransformFeedback π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.isVertexArray π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.lineWidth π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.linkProgram π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.pauseTransformFeedback π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.pixelStorei π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.polygonOffset π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.readBuffer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.readPixels π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.renderbufferStorage π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.renderbufferStorageMultisample π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.resumeTransformFeedback π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.sampleCoverage π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.samplerParameterf π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.samplerParameteri π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.scissor π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.shaderSource π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.stencilFunc π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.stencilFuncSeparate π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.stencilMask π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.stencilMaskSeparate π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.stencilOp π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.stencilOpSeparate π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.texImage2D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | Firefox for Android: Textures from video elements are not supported. See bug 1884282. |
| api.WebGL2RenderingContext.texImage3D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.texParameterf π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.texParameteri π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.texStorage2D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.texStorage3D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.texSubImage2D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | Firefox for Android: Textures from video elements are not supported. See bug 1884282. |
| api.WebGL2RenderingContext.texSubImage3D π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.transformFeedbackVaryings π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform1f π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform1fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform1i π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform1iv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform1ui π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform1uiv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform2f π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform2fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform2i π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform2iv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform2ui π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform2uiv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform3f π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform3fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform3i π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform3iv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform3ui π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform3uiv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform4f π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform4fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform4i π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform4iv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform4ui π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniform4uiv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformBlockBinding π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformMatrix2fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformMatrix2x3fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformMatrix2x4fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformMatrix3fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformMatrix3x2fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformMatrix3x4fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformMatrix4fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformMatrix4x2fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.uniformMatrix4x3fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.useProgram π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.validateProgram π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttrib1f π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttrib1fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttrib2f π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttrib2fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttrib3f π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttrib3fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttrib4f π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttrib4fv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttribDivisor π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttribI4i π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttribI4iv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttribI4ui π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttribI4uiv π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttribIPointer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.vertexAttribPointer π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.viewport π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGL2RenderingContext.waitSync π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGLActiveInfo π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLActiveInfo.name π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLActiveInfo.size π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLActiveInfo.type π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLBuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLContextEvent π | Safari | 7/20/2011 | Firefox | 9/20/2016 | 1889 | |
| api.WebGLContextEvent.WebGLContextEvent π | Safari | 7/25/2012 | Firefox | 9/20/2016 | 1518 | |
| api.WebGLContextEvent.statusMessage π | Safari | 7/20/2011 | Firefox | 9/20/2016 | 1889 | |
| api.WebGLFramebuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLProgram π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLQuery π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGLRenderbuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Edge: To access the WebGL context, use experimental-webgl rather than the standard webgl identifier.Internet Explorer: To access the WebGL context, use experimental-webgl rather than the standard webgl identifier. |
| api.WebGLRenderingContext.activeTexture π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.attachShader π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.bindAttribLocation π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.bindBuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.bindFramebuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.bindRenderbuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.bindTexture π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.blendColor π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.blendEquation π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.blendEquationSeparate π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.blendFunc π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.blendFuncSeparate π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.bufferData π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.bufferSubData π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.canvas π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.checkFramebufferStatus π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.clear π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.clearColor π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.clearDepth π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.clearStencil π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.colorMask π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.compileShader π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.compressedTexImage2D π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.compressedTexSubImage2D π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.copyTexImage2D π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.copyTexSubImage2D π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.createBuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.createFramebuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.createProgram π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.createRenderbuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.createShader π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.createTexture π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.cullFace π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.deleteBuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.deleteFramebuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.deleteProgram π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.deleteRenderbuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.deleteShader π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.deleteTexture π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.depthFunc π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.depthMask π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.depthRange π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.detachShader π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.disable π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.disableVertexAttribArray π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.drawArrays π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.drawElements π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.drawingBufferColorSpace π | Safari | 3/27/2023 | Firefox | 10/29/2024 | 582 | Firefox: Accidental early exposure with no functionality.Firefox for Android: Accidental early exposure with no functionality. |
| api.WebGLRenderingContext.drawingBufferHeight π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.drawingBufferWidth π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.enable π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.enableVertexAttribArray π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.finish π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.flush π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.framebufferRenderbuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.framebufferTexture2D π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.frontFace π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.generateMipmap π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getActiveAttrib π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getActiveUniform π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getAttachedShaders π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getAttribLocation π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getBufferParameter π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getContextAttributes π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getError π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getExtension π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getFramebufferAttachmentParameter π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getParameter π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getProgramInfoLog π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getProgramParameter π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getRenderbufferParameter π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getShaderInfoLog π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getShaderParameter π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getShaderPrecisionFormat π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getShaderSource π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getSupportedExtensions π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getTexParameter π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getUniform π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getUniformLocation π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getVertexAttrib π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.getVertexAttribOffset π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.hint π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.isBuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.isContextLost π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.isEnabled π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.isFramebuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.isProgram π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.isRenderbuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.isShader π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.isTexture π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.lineWidth π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.linkProgram π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.pixelStorei π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.polygonOffset π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.readPixels π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.renderbufferStorage π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.sampleCoverage π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.scissor π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.shaderSource π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.stencilFunc π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.stencilFuncSeparate π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.stencilMask π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.stencilMaskSeparate π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.stencilOp π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.stencilOpSeparate π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.texImage2D π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Firefox for Android: Textures from video elements are not supported. See bug 1884282. |
| api.WebGLRenderingContext.texParameterf π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.texParameteri π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.texSubImage2D π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Firefox for Android: Textures from video elements are not supported. See bug 1884282. |
| api.WebGLRenderingContext.uniform1f π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform1fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform1i π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform1iv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform2f π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform2fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform2i π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform2iv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform3f π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform3fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform3i π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform3iv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform4f π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform4fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform4i π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniform4iv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniformMatrix2fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniformMatrix3fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.uniformMatrix4fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.useProgram π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.validateProgram π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.vertexAttrib1f π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.vertexAttrib1fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.vertexAttrib2f π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.vertexAttrib2fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.vertexAttrib3f π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.vertexAttrib3fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.vertexAttrib4f π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.vertexAttrib4fv π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.vertexAttribPointer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLRenderingContext.viewport π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLSampler π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGLShader π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLShaderPrecisionFormat π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLShaderPrecisionFormat.precision π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLShaderPrecisionFormat.rangeMax π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLShaderPrecisionFormat.rangeMin π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLSync π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGLTexture π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLTransformFeedback π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGLUniformLocation π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| api.WebGLVertexArrayObject π | Firefox | 1/24/2017 | Safari | 9/20/2021 | 1700 | |
| api.WebGLVertexArrayObjectOES π | Safari | 7/20/2011 | Firefox | 10/29/2013 | 832 | |
| api.WebSocket π | Safari | 6/7/2010 | Firefox | 3/13/2012 | 645 | Firefox: Message size limited to 16 MB (see bug 711205).Firefox for Android: Message size limited to 16 MB (see bug 711205). |
| api.WebSocket.WebSocket π | Safari | 6/7/2010 | Firefox | 3/13/2012 | 645 | |
| api.WebSocket.WebSocket.url_parameter_http_https_relative | Safari | 1/22/2024 | Firefox | 3/19/2024 | 57 | |
| api.WebSocket.binaryType π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| api.WebSocket.bufferedAmount π | Safari | 6/7/2010 | Firefox | 9/27/2011 | 477 | |
| api.WebSocket.close π | Safari | 6/7/2010 | Firefox | 9/27/2011 | 477 | |
| api.WebSocket.close_event π | Safari | 6/7/2010 | Firefox | 9/27/2011 | 477 | |
| api.WebSocket.error_event π | Safari | 6/7/2010 | Firefox | 9/27/2011 | 477 | |
| api.WebSocket.extensions π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| api.WebSocket.message_event π | Safari | 6/7/2010 | Firefox | 9/27/2011 | 477 | |
| api.WebSocket.open_event π | Safari | 6/7/2010 | Firefox | 9/27/2011 | 477 | |
| api.WebSocket.protocol π | Firefox | 9/27/2011 | Safari | 7/25/2012 | 302 | |
| api.WebSocket.protocol_rfc_6455 | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| api.WebSocket.readyState π | Safari | 6/7/2010 | Firefox | 9/27/2011 | 477 | |
| api.WebSocket.send π | Safari | 6/7/2010 | Firefox | 1/8/2013 | 946 | Firefox: Only parameter of type ArrayBuffer and String supported.Firefox: Only parameter of type String supported.Firefox: Only parameter of type String supported. Returns boolean.Firefox for Android: Only parameter of type ArrayBuffer and String supported.Firefox for Android: Only parameter of type String supported.Firefox for Android: Only parameter of type String supported. Returns boolean. |
| api.WebSocket.url π | Firefox | 9/27/2011 | Safari | 7/25/2012 | 302 | |
| api.WebSocket.worker_support | Safari | 6/7/2010 | Firefox | 3/31/2015 | 1758 | |
| api.WheelEvent π | Safari | 10/26/2007 | Firefox | 11/20/2012 | 1852 | |
| api.WheelEvent.WheelEvent π | Firefox | 11/20/2012 | Safari | 10/22/2013 | 336 | |
| api.WheelEvent.deltaMode π | Firefox | 11/20/2012 | Safari | 10/22/2013 | 336 | |
| api.WheelEvent.deltaX π | Firefox | 11/20/2012 | Safari | 10/16/2014 | 695 | Internet Explorer: IE9 supports an old draft of the spec where this value was a long instead of a double. |
| api.WheelEvent.deltaY π | Firefox | 11/20/2012 | Safari | 10/16/2014 | 695 | Internet Explorer: IE9 supports an old draft of the spec where this value was a long instead of a double. |
| api.WheelEvent.deltaZ π | Firefox | 11/20/2012 | Safari | 10/16/2014 | 695 | Internet Explorer: IE9 supports an old draft of the spec where this value was a long instead of a double. |
| api.WheelEvent.pinch_to_zoom_support | Firefox | 8/8/2017 | Safari | 9/20/2021 | 1504 | |
| api.WheelEvent.wheelDelta | Safari | 10/26/2007 | Firefox | 7/13/2021 | 5009 | |
| api.WheelEvent.wheelDeltaX | Safari | 10/26/2007 | Firefox | 7/13/2021 | 5009 | |
| api.WheelEvent.wheelDeltaY | Safari | 10/26/2007 | Firefox | 7/13/2021 | 5009 | |
| api.Window π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.DOMContentLoaded_event π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.Window.afterprint_event π | Firefox | 8/16/2011 | Safari | 9/19/2019 | 2956 | |
| api.Window.alert π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Chrome Android: Starting with Chrome Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Quest Browser: Starting with Quest Browser 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera Android: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Samsung Internet: Starting with Samsung Internet 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.WebView Android: Starting with WebView Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals. |
| api.Window.beforeprint_event π | Firefox | 8/16/2011 | Safari | 9/19/2019 | 2956 | |
| api.Window.beforeunload_event π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.beforeunload_event.event_returnvalue_activation | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | Chrome: Before Chrome 119, an empty string incorrectly activated the confirmation dialog.Chrome Android: Before Chrome Android 119, an empty string incorrectly activated the confirmation dialog.Edge: Before Edge 119, an empty string incorrectly activated the confirmation dialog.Quest Browser: Before Quest Browser false, an empty string incorrectly activated the confirmation dialog.Opera: Before Opera 105, an empty string incorrectly activated the confirmation dialog.Opera Android: Before Opera Android 79, an empty string incorrectly activated the confirmation dialog.Samsung Internet: Before Samsung Internet 25.0, an empty string incorrectly activated the confirmation dialog.WebView Android: Before WebView Android 119, an empty string incorrectly activated the confirmation dialog. |
| api.Window.beforeunload_event.generic_string_displayed | Firefox | 1/26/2016 | Safari | 3/21/2016 | 55 | |
| api.Window.beforeunload_event.preventdefault_activation | Firefox | 8/16/2011 | Safari | 9/19/2017 | 2226 | |
| api.Window.beforeunload_event.return_string_activation | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.blur π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.blur_event π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | Firefox: Apart from firing the event on window as other browsers do, Firefox also fires the event on the document object. See bug 1228802.Firefox: Before Firefox 24, the interface for this event is a plain Event, not FocusEvent.Firefox for Android: Apart from firing the event on window as other browsers do, Firefox for Android also fires the event on the document object. See bug 1228802.Firefox for Android: Before Firefox for Android 24, the interface for this event is a plain Event, not FocusEvent. |
| api.Window.cancelAnimationFrame π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| api.Window.captureEvents π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.close π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: Before Edge 79, scripts can close windows that weren't opened by the same script.Firefox: Before Firefox 46, scripts can close windows that weren't opened by the same script.Firefox for Android: Before Firefox for Android 46, scripts can close windows that weren't opened by the same script. |
| api.Window.closed π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.confirm π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Chrome Android: Starting with Chrome Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Quest Browser: Starting with Quest Browser 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera Android: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Samsung Internet: Starting with Samsung Internet 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.WebView Android: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals. |
| api.Window.customElements π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | |
| api.Window.devicePixelRatio π | Safari | 10/26/2007 | Firefox | 1/8/2013 | 1901 | Safari: In Safari, the devicePixelRatio does not change when the page is zoomed. See bug 124862.Safari on iOS: In Safari on iOS, the devicePixelRatio does not change when the page is zoomed. See bug 124862.WebView on iOS: In WebView on iOS, the devicePixelRatio does not change when the page is zoomed. See bug 124862. |
| api.Window.devicemotion_event π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.Window.deviceorientation_event π | Firefox | 8/16/2011 | Safari | 9/18/2023 | 4416 | |
| api.Window.document π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.error_event π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.Window.event π | Safari | 10/24/2003 | Firefox | 3/19/2019 | 5625 | |
| api.Window.find | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.focus π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Starting in Chrome 66, opening a popup in fullscreen mode and calling this function will end fullscreen mode. |
| api.Window.focus_event π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | Firefox: Apart from firing the event on window as other browsers do, Firefox also fires the event on the document object. See bug 1228802.Firefox: Before Firefox 24, the interface for this event is a plain Event, not FocusEvent.Firefox for Android: Apart from firing the event on window as other browsers do, Firefox for Android also fires the event on the document object. See bug 1228802.Firefox for Android: Before Firefox for Android 24, the interface for this event is a plain Event, not FocusEvent. |
| api.Window.frameElement π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.frames π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.gamepadconnected_event π | Firefox | 6/1/2021 | Safari | 9/12/2022 | 468 | Chrome: The ongamepadconnected event handler property is not supported. See bug 40175074.Chrome Android: The ongamepadconnected event handler property is not supported. See bug 40175074.Edge: The ongamepadconnected event handler property is not supported. See bug 40175074.Firefox: The ongamepadconnected event handler property is not supported. See bug 1697093.Firefox for Android: The ongamepadconnected event handler property is not supported. See bug 1697093.Quest Browser: The ongamepadconnected event handler property is not supported. See bug 40175074.Opera: The ongamepadconnected event handler property is not supported. See bug 40175074.Opera Android: The ongamepadconnected event handler property is not supported. See bug 40175074.Safari: The ongamepadconnected event handler property is not supported. See bug 223860.Safari on iOS: The ongamepadconnected event handler property is not supported. See bug 223860.Samsung Internet: The ongamepadconnected event handler property is not supported. See bug 40175074.WebView Android: The ongamepadconnected event handler property is not supported. See bug 40175074.WebView on iOS: The ongamepadconnected event handler property is not supported. See bug 223860. |
| api.Window.gamepaddisconnected_event π | Firefox | 6/1/2021 | Safari | 9/12/2022 | 468 | Chrome: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Chrome Android: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Edge: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Firefox: The ongamepaddisconnected event handler property is not supported. See bug 1697093.Firefox for Android: The ongamepaddisconnected event handler property is not supported. See bug 1697093.Quest Browser: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Opera: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Opera Android: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Safari: The ongamepaddisconnected event handler property is not supported. See bug 223860.Safari on iOS: The ongamepaddisconnected event handler property is not supported. See bug 223860.Samsung Internet: The ongamepaddisconnected event handler property is not supported. See bug 40175074.WebView Android: The ongamepaddisconnected event handler property is not supported. See bug 40175074.WebView on iOS: The ongamepaddisconnected event handler property is not supported. See bug 223860. |
| api.Window.getComputedStyle π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Firefox: Before version 62 this function returned null when called on a Window with no presentation (e.g. an iframe with display: none; set). Since 62 it returns a CSSStyleDeclaration object with length 0, containing empty strings (bug 1467722; also see bug 1471231 for further work).Firefox for Android: Before version 62 this function returned null when called on a Window with no presentation (e.g. an iframe with display: none; set). Since 62 it returns a CSSStyleDeclaration object with length 0, containing empty strings (bug 1467722; also see bug 1471231 for further work). |
| api.Window.getComputedStyle.pseudo_element_support | Firefox | 6/30/2009 | Safari | 7/20/2011 | 750 | |
| api.Window.getSelection π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.hashchange_event π | Firefox | 1/21/2010 | Safari | 6/7/2010 | 137 | Chrome: A regular Event object is fired, rather than a HashChangeEvent object. |
| api.Window.history π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.innerHeight π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Firefox: From version 4 to 24, this property could give a wrong value before page load in certain circumstances (see bug 641188).Firefox for Android: Before version 24, this property could give a wrong value before page load in certain circumstances (see bug 641188).Safari on iOS: This property returns the height of the visual viewport instead of the layout viewport. See bug 174362 for details.WebView on iOS: This property returns the height of the visual viewport instead of the layout viewport. See bug 174362 for details. |
| api.Window.innerWidth π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Firefox: From version 4 to 24, this property could give a wrong value before page load in certain circumstances (see bug 641188).Firefox for Android: Before version 24, this property could give a wrong value before page load in certain circumstances (see bug 641188).Safari on iOS: This property returns the width of the visual viewport instead of the layout viewport. See bug 174362 for details.WebView on iOS: This property returns the width of the visual viewport instead of the layout viewport. See bug 174362 for details. |
| api.Window.languagechange_event π | Firefox | 9/2/2014 | Safari | 3/27/2017 | 937 | |
| api.Window.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.load_event π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Window.localStorage π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Deno: The key used for the Web Storage bucket is based on various factors. See the Deno manual. |
| api.Window.location π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 57, single quotes contained in URLs were escaped when accessed via URL APIs. See bug 1386683.Firefox for Android: Before Firefox for Android 57, single quotes contained in URLs were escaped when accessed via URL APIs. See bug 1386683. |
| api.Window.locationbar π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.matchMedia π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.Window.menubar π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.message_event π | Safari | 6/8/2009 | Firefox | 12/20/2011 | 925 | |
| api.Window.messageerror_event π | Firefox | 11/14/2017 | Safari | 3/27/2023 | 1959 | |
| api.Window.moveBy π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.moveTo π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.moveTo.relative-multi-screen | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Chrome Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Edge: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Firefox: Multi-screen coordinates are used, but windows are clamped to their existing displays.Firefox for Android: Multi-screen coordinates are used, but windows are clamped to their existing displays.Quest Browser: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Opera: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Opera Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.Samsung Internet: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.WebView Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.WebView on iOS: Coordinate origin used is inconsistent/unreliable. |
| api.Window.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 86, if a new page from another domain is loaded into a tab, then window.name is not set to an empty string, which can allow some cross-site attacks. See bug 1685089 and bug 444222.Firefox for Android: Before Firefox for Android 86, if a new page from another domain is loaded into a tab, then window.name is not set to an empty string, which can allow some cross-site attacks. See bug 1685089 and bug 444222. |
| api.Window.navigator π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.offline_event π | Safari | 6/8/2009 | Firefox | 12/20/2011 | 925 | |
| api.Window.online_event π | Safari | 6/8/2009 | Firefox | 12/20/2011 | 925 | |
| api.Window.open π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Safari on iOS: This method will not function if the target parameter is unspecified or set to _blank.WebView on iOS: This method will not function if the target parameter is unspecified or set to _blank. |
| api.Window.open.once_per_event | Safari | 9/19/2017 | Firefox | 1/29/2019 | 497 | |
| api.Window.open.relative-multi-screen | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Chrome Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Edge: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Quest Browser: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Opera: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Opera Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.Samsung Internet: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.WebView Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.WebView on iOS: Coordinate origin used is inconsistent/unreliable. |
| api.Window.opener π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.outerHeight π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.outerWidth π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.pagehide_event π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.Window.pageshow_event π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| api.Window.parent π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.Window.personalbar π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.popstate_event π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Chrome: Before version 34, Chrome would fire a popstate event on page load.Chrome Android: Before version 34, Chrome Android would fire a popstate event on page load.Quest Browser: Before version 5.0, Quest Browser would fire a popstate event on page load.Safari: Before version 10, Safari would fire a popstate event on page load.Safari on iOS: Before version 10, Safari on iOS would fire a popstate event on page load.Samsung Internet: Before version 2.0, Samsung Internet would fire a popstate event on page load.WebView Android: Before version 37, WebView would fire a popstate event on page load.WebView on iOS: Before version 10, WebView on iOS would fire a popstate event on page load. |
| api.Window.postMessage π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | Firefox: Firefox 8 and up supports sending File and FileList objects between windows. This is only allowed if the recipient's principal is contained within the sender's principal for security reasons.Firefox: Before Firefox 6, the message parameter must be a string. Since Firefox 6, the message parameter is serialized using the structured clone algorithm. This means you can pass a broad variety of data objects safely to the destination window without having to serialize them yourself.Firefox for Android: Firefox for Android 8 and up supports sending File and FileList objects between windows. This is only allowed if the recipient's principal is contained within the sender's principal for security reasons.Firefox for Android: Before Firefox for Android 6, the message parameter must be a string. Since Firefox for Android 6, the message parameter is serialized using the structured clone algorithm. This means you can pass a broad variety of data objects safely to the destination window without having to serialize them yourself.Internet Explorer: IE10 had an important limitation: see this article for details.Internet Explorer: Support only for <frame> and <iframe>. |
| api.Window.postMessage.transfer_parameter | Safari | 6/7/2010 | Firefox | 4/2/2013 | 1030 | |
| api.Window.print π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | Chrome: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Chrome Android: Starting with Chrome Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Quest Browser: Starting with Quest Browser 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera Android: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Samsung Internet: Starting with Samsung Internet 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.WebView Android: Starting with WebView Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals. |
| api.Window.prompt π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Chrome Android: Starting with Chrome Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Firefox: Firefox strips newline characters from the prompt response; see bug 1716229.Firefox for Android: Firefox for Android strips newline characters from the prompt response; see bug 1716229.Internet Explorer: This function has no effect in the Modern UI/Metro version of Internet Explorer for Windows 8. It does not display a prompt to the user, and always returns undefined. It is not clear whether this is a bug or intended behavior. Desktop versions of IE do implement this function.Quest Browser: Starting with Quest Browser 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera Android: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Samsung Internet: Starting with Samsung Internet 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.WebView Android: Starting with WebView Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals. |
| api.Window.rejectionhandled_event π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.Window.releaseEvents π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.requestAnimationFrame π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | Edge: Before version 17, Edge does not reliably fire requestAnimationFrame before the paint cycle.Firefox: Callback parameter is a DOMHighResTimestamp. This means ten microsecond precision and zero time as performance.now().Firefox: Callback parameter is a DOMTimestamp. This means millisecond precision and zero time as Date.now().Firefox: Could be called with no input parameters.Internet Explorer: Internet Explorer does not reliably fire requestAnimationFrame before the paint cycle. |
| api.Window.resizeBy π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Since Firefox 7, it's no longer possible for a web site to change the default size of a window in a browser if the window wasn't created by window.open or contains more than one tab. See here for more details. |
| api.Window.resizeTo π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Since Firefox 7, it's no longer possible for a web site to change the default size of a window in a browser if the window wasn't created by window.open or contains more than one tab. See here for more details. |
| api.Window.resize_event π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | Chrome: Chrome does not fire a resize event on page load.Chrome Android: Chrome Android does not fire a resize event on page load.Edge: Before Edge 79, Edge fired a resize event on page load. This is no longer the case.Firefox: Before Firefox 68, Firefox fired a resize event on page load. This is no longer the case.Firefox for Android: Before Firefox for Android 68, Firefox for Android fired a resize event on page load. This is no longer the case.Quest Browser: Quest Browser does not fire a resize event on page load.Opera: Opera does not fire a resize event on page load.Opera Android: Opera does not fire a resize event on page load.Samsung Internet: Samsung Internet does not fire a resize event on page load.WebView Android: WebView does not fire a resize event on page load. |
| api.Window.screen π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.screenLeft π | Safari | 6/23/2003 | Firefox | 12/11/2018 | 5650 | |
| api.Window.screenLeft.relative-multi-screen | Safari | 6/23/2003 | Firefox | 12/11/2018 | 5650 | Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable. |
| api.Window.screenTop π | Safari | 6/23/2003 | Firefox | 12/11/2018 | 5650 | |
| api.Window.screenTop.relative-multi-screen | Safari | 6/23/2003 | Firefox | 12/11/2018 | 5650 | Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable. |
| api.Window.screenX π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 28, Gecko was using device pixels instead of CSS pixels; in other words, it was assuming a value of screenPixelsPerCSSPixel of 1 for any device.Firefox for Android: Before Firefox for Android 28, Gecko was using device pixels instead of CSS pixels; in other words, it was assuming a value of screenPixelsPerCSSPixel of 1 for any device. |
| api.Window.screenX.relative-multi-screen | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable. |
| api.Window.screenY π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 28, Gecko was using device pixels instead of CSS pixels; in other words, it was assuming a value of screenPixelsPerCSSPixel of 1 for any device.Firefox for Android: Before Firefox for Android 28, Gecko was using device pixels instead of CSS pixels; in other words, it was assuming a value of screenPixelsPerCSSPixel of 1 for any device. |
| api.Window.screenY.relative-multi-screen | Safari | 6/23/2003 | Firefox | 12/11/2018 | 5650 | Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable. |
| api.Window.scroll π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.scroll.options_behavior_parameter | Firefox | 2/24/2015 | Safari | 9/16/2020 | 2031 | Safari: Safari does not have support for the smooth scroll behavior.Safari on iOS: Safari on iOS does not have support for the smooth scroll behavior.WebView on iOS: WebView on iOS does not have support for the smooth scroll behavior. |
| api.Window.scroll.options_left_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Window.scroll.options_top_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Window.scrollBy π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.scrollBy.options_behavior_parameter | Firefox | 2/24/2015 | Safari | 9/16/2020 | 2031 | Safari: Safari does not have support for the smooth scroll behavior.Safari on iOS: Safari on iOS does not have support for the smooth scroll behavior.WebView on iOS: WebView on iOS does not have support for the smooth scroll behavior. |
| api.Window.scrollBy.options_left_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Window.scrollBy.options_top_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Window.scrollTo π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.scrollTo.options_behavior_parameter | Firefox | 2/24/2015 | Safari | 9/16/2020 | 2031 | Safari: Before version 15.4, Safari did not have support for the smooth scroll behavior.Safari on iOS: Before version 15.4, Safari on iOS did not have support for the smooth scroll behavior.WebView on iOS: Before version 15.4, WebView on iOS did not have support for the smooth scroll behavior. |
| api.Window.scrollTo.options_left_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Window.scrollTo.options_top_parameter | Firefox | 2/24/2015 | Safari | 3/27/2017 | 762 | |
| api.Window.scrollX π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.scrollY π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.scrollbars π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.self π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.sessionStorage π | Firefox | 10/24/2006 | Safari | 6/8/2009 | 958 | |
| api.Window.speechSynthesis π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| api.Window.status π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.Window.statusbar π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.stop π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.storage_event π | Safari | 6/8/2009 | Firefox | 3/8/2016 | 2465 | |
| api.Window.toolbar π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.top π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Firefox: Starting in Firefox 6, this property is read only, as defined by the standard. |
| api.Window.unhandledrejection_event π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | Firefox: event.preventDefault() does not prevent Firefox from logging the error message in the console, see bug 1642147.Firefox for Android: event.preventDefault() does not prevent Firefox for Android from logging the error message in the console, see bug 1642147. |
| api.Window.unload_event π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.Window.visualViewport π | Safari | 9/19/2019 | Firefox | 8/10/2021 | 691 | |
| api.Window.window π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.WindowClient π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.WindowClient.focus π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.WindowClient.focused π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.WindowClient.navigate π | Firefox | 11/15/2016 | Safari | 9/12/2022 | 2127 | Safari: This method exists, but always throws NotSupportedError.Safari on iOS: This method exists, but always throws NotSupportedError. |
| api.WindowClient.visibilityState π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| api.Worker π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Node.js: Inherits from a Node EventEmitter instead of DOM EventTarget.Node.js: Also supports CommonJS modules, enabled for files ending with .cjs and for files ending with .js when the nearest parent package.json file contains a top-level field "type" with a value not of "commonjs".Node.js: Available as a part of the worker_threads module. |
| api.Worker.Worker π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Node.js: Takes entirely different options parameters. |
| api.Worker.Worker.ecmascript_modules | Safari | 9/20/2021 | Firefox | 6/6/2023 | 624 | Node.js: ECMAScript modules are enabled for files ending with .mjs and for files ending with .js when the nearest parent package.json file contains a top-level field "type" with a value of "module".Safari: Nested workers support was introduced in Safari 15.5.Safari: Script loading in nested workers was introduced in Safari 16.4.Safari on iOS: Nested workers support was introduced in Safari on iOS 15.5.Safari on iOS: Script loading in nested workers was introduced in Safari on iOS 16.4.WebView on iOS: Nested workers support was introduced in WebView on iOS 15.5.WebView on iOS: Script loading in nested workers was introduced in WebView on iOS 16.4. |
| api.Worker.Worker.mime_checks | Firefox | 9/22/2020 | Safari | 9/12/2022 | 720 | |
| api.Worker.Worker.options_name_parameter | Firefox | 8/8/2017 | Safari | 3/25/2019 | 594 | |
| api.Worker.Worker.options_type_parameter | Safari | 9/20/2021 | Firefox | 6/6/2023 | 624 | Deno: Only supports module |
| api.Worker.error_event π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Node.js: Supports the event, but only via Node EventEmitter. |
| api.Worker.message_event π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Node.js: Supports the event, but only via Node EventEmitter. |
| api.Worker.messageerror_event π | Firefox | 11/14/2017 | Safari | 3/27/2023 | 1959 | Node.js: Supports the event, but only via Node EventEmitter.Node.js: Supports the event, but only via Node EventEmitter. |
| api.Worker.postMessage π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Deno: The message parameter does not support cloning Blob values.Deno: The message parameter does not support cloning Blob values.Deno: The transfer parameter does not accept ArrayBuffer items. Passing an ArrayBuffer results in an error being thrown.Deno: The message parameter does not support SharedArrayBuffer.Deno: The transfer parameter is not supported, and results in an error being thrown.Deno: Data passed in the message parameter is serialized with JSON, not the structured clone algorithm.Deno: The transfer parameter is not supported, and results in an error being thrown.Internet Explorer: Internet Explorer does not support Transferable objects.Node.js: Only accepts an array of transfer objects as the second parameter, not an options object with a transfer property.Node.js: Only supports transferring ArrayBuffer and MessagePort objects. |
| api.Worker.terminate π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Node.js: Returns a Promise.Node.js: Takes an optional callback parameter to be executed when the worker has terminated. |
| api.Worker.worker_support | Firefox | 12/1/2014 | Safari | 3/27/2023 | 3038 | Chrome: Not available in Shared Workers. See bug 40695450.Chrome Android: Not available in Shared Workers. See bug 40695450.Edge: Not available in Shared Workers. See bug 40695450.Quest Browser: Not available in Shared Workers. See bug 40695450.Opera: Not available in Shared Workers. See bug 40695450.Opera Android: Not available in Shared Workers. See bug 40695450.Safari: Not available in Shared Workers. See bug 265263.Safari on iOS: Not available in Shared Workers. See bug 265263.Samsung Internet: Not available in Shared Workers. See bug 40695450.WebView Android: Not available in Shared Workers. See bug 40695450.WebView on iOS: Not available in Shared Workers. See bug 265263. |
| api.WorkerGlobalScope π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerGlobalScope.error_event π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerGlobalScope.fonts π | Safari | 9/20/2021 | Firefox | 9/20/2022 | 365 | |
| api.WorkerGlobalScope.importScripts π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| api.WorkerGlobalScope.importScripts.mime_checks | Firefox | 5/21/2019 | Safari | 9/12/2022 | 1210 | |
| api.WorkerGlobalScope.location π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerGlobalScope.navigator π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerGlobalScope.offline_event π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| api.WorkerGlobalScope.online_event π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| api.WorkerGlobalScope.rejectionhandled_event π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.WorkerGlobalScope.securitypolicyviolation_event π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| api.WorkerGlobalScope.self π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerGlobalScope.unhandledrejection_event π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| api.WorkerLocation π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerLocation.hash π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerLocation.host π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerLocation.hostname π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerLocation.href π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerLocation.origin π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| api.WorkerLocation.pathname π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerLocation.port π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerLocation.protocol π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerLocation.search π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerLocation.toString π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerNavigator π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerNavigator.appCodeName π | Firefox | 6/30/2009 | Safari | 9/20/2016 | 2639 | |
| api.WorkerNavigator.appName π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerNavigator.appVersion π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.WorkerNavigator.hardwareConcurrency π | Firefox | 8/2/2016 | Safari | 3/14/2022 | 2050 | Safari: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.Safari on iOS: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.WebView on iOS: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381. |
| api.WorkerNavigator.language π | Firefox | 6/30/2009 | Safari | 9/20/2016 | 2639 | Firefox: Before Firefox 4, this property's value was also part of the user agent string, as reported by navigator.userAgent. Starting in Firefox 5, this property's value is based on the value of the Accept-Language HTTP header.Internet Explorer: Closest available (non-standard) properties are userLanguage and browserLanguage. |
| api.WorkerNavigator.languages π | Firefox | 9/2/2014 | Safari | 3/27/2017 | 937 | Chrome: Before Chrome 65, navigator.languages[0] is not guaranteed to equal navigator.language.Chrome Android: Before Chrome Android 65, navigator.languages[0] is not guaranteed to equal navigator.language.Firefox: In Firefox, the navigator.languages property's value is taken from the intl.accept_languages preference.Firefox for Android: In Firefox for Android, the navigator.languages property's value is taken from the intl.accept_languages preference.Internet Explorer: Closest available (non-standard) properties are userLanguage and browserLanguage.Quest Browser: Before Quest Browser 5.0, navigator.languages[0] is not guaranteed to equal navigator.language.WebView Android: Before version 65, navigator.languages[0] is not guaranteed to equal navigator.language. |
| api.WorkerNavigator.locks π | Firefox | 1/11/2022 | Safari | 3/14/2022 | 62 | |
| api.WorkerNavigator.mediaCapabilities π | Firefox | 10/23/2018 | Safari | 3/14/2022 | 1238 | |
| api.WorkerNavigator.onLine π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Firefox: Since Firefox 4 the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity. Since Firefox 41, on OS X and Windows, the returned values follow the actual network connectivity, unless 'Work offline' mode is selected (where it will always return false).Opera: From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity.Opera Android: From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity.WebView Android: Can incorrectly return true, see bug 41369933. |
| api.WorkerNavigator.permissions π | Safari | 3/27/2023 | Firefox | 11/26/2024 | 610 | |
| api.WorkerNavigator.platform π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Firefox: Before Firefox 69, platform would report running on a 32-bit CPU if running the 32-bit version of Firefox on a 64-bit system.Firefox: You can override the value returned by platform by setting the preference general.platform.override to the string you wish to be returned instead. |
| api.WorkerNavigator.product π | Firefox | 6/30/2009 | Safari | 9/20/2016 | 2639 | |
| api.WorkerNavigator.serviceWorker π | Safari | 4/12/2018 | Firefox | 11/26/2024 | 2420 | |
| api.WorkerNavigator.storage π | Firefox | 11/14/2017 | Safari | 12/13/2021 | 1490 | |
| api.WorkerNavigator.userAgent π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.Worklet π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.Worklet.addModule π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.Worklet.ecmascript_modules | Safari | 9/20/2021 | Firefox | 6/6/2023 | 624 | Safari: Nested workers support was introduced in Safari 15.5.Safari: Script loading in nested workers was introduced in Safari 16.4.Safari on iOS: Nested workers support was introduced in Safari on iOS 15.5.Safari on iOS: Script loading in nested workers was introduced in Safari on iOS 16.4.WebView on iOS: Nested workers support was introduced in WebView on iOS 15.5.WebView on iOS: Script loading in nested workers was introduced in WebView on iOS 16.4. |
| api.WorkletGlobalScope π | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| api.WritableStream π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | Node.js: Available as a part of the stream/web module. |
| api.WritableStream.WritableStream π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStream.abort π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStream.close π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStream.getWriter π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStream.locked π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStreamDefaultController π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | Node.js: Available as a part of the stream/web module. |
| api.WritableStreamDefaultController.error π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStreamDefaultController.signal π | Firefox | 5/3/2022 | Safari | 3/27/2023 | 328 | |
| api.WritableStreamDefaultWriter π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | Node.js: Available as a part of the stream/web module. |
| api.WritableStreamDefaultWriter.WritableStreamDefaultWriter π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStreamDefaultWriter.abort π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStreamDefaultWriter.close π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStreamDefaultWriter.closed π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStreamDefaultWriter.desiredSize π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStreamDefaultWriter.ready π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStreamDefaultWriter.releaseLock π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.WritableStreamDefaultWriter.write π | Safari | 4/26/2021 | Firefox | 5/3/2022 | 372 | |
| api.XMLDocument π | Firefox | 11/9/2004 | Safari | 9/20/2016 | 4333 | Chrome: Implemented as an alias for Document.Chrome Android: Implemented as an alias for Document.Opera: Implemented as an alias for Document.Opera Android: Implemented as an alias for Document.Safari: Implemented as an alias for Document.Safari on iOS: Implemented as an alias for Document.Samsung Internet: Implemented as an alias for Document.WebView Android: Implemented as an alias for Document.WebView on iOS: Implemented as an alias for Document. |
| api.XMLHttpRequest π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Internet Explorer: Implemented via ActiveXObject('Microsoft.XMLHTTP') |
| api.XMLHttpRequest.XMLHttpRequest π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XMLHttpRequest.abort π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| api.XMLHttpRequest.abort_event π | Safari | 4/15/2005 | Firefox | 6/30/2009 | 1537 | |
| api.XMLHttpRequest.authorization_removed_cross_origin π | Safari | 10/24/2022 | Firefox | 3/14/2023 | 141 | |
| api.XMLHttpRequest.error_event π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.XMLHttpRequest.getAllResponseHeaders π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Firefox: Starting from Firefox 49, empty headers are returned as empty strings in case the preference network.http.keep_empty_response_headers_as_empty_string is set to true, defaulting to false. Before Firefox 49 empty headers had been ignored. Since Firefox 50 the preference defaults to true.Firefox for Android: Starting from Firefox for Android 49, empty headers are returned as empty strings in case the preference network.http.keep_empty_response_headers_as_empty_string is set to true, defaulting to false. Before Firefox for Android 49 empty headers had been ignored. Since Firefox for Android 50 the preference defaults to true. |
| api.XMLHttpRequest.getAllResponseHeaders.header_names_lowercase | Safari | 9/19/2017 | Firefox | 12/11/2018 | 448 | |
| api.XMLHttpRequest.getResponseHeader π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Firefox: Starting from Firefox 49, empty headers are returned as empty strings in case the preference network.http.keep_empty_response_headers_as_empty_string is set to true, defaulting to false. Before Firefox 49 empty headers had been ignored. Since Firefox 50 the preference defaults to true.Firefox for Android: Starting from Firefox for Android 49, empty headers are returned as empty strings in case the preference network.http.keep_empty_response_headers_as_empty_string is set to true, defaulting to false. Before Firefox for Android 49 empty headers had been ignored. Since Firefox for Android 50 the preference defaults to true. |
| api.XMLHttpRequest.load_event π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| api.XMLHttpRequest.loadend_event π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| api.XMLHttpRequest.loadstart_event π | Safari | 4/15/2005 | Firefox | 6/30/2009 | 1537 | |
| api.XMLHttpRequest.open π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Firefox: Starting in Firefox 30, synchronous requests on the main thread have been deprecated due to their negative impact on performance and the user experience. Therefore, the async parameter may not be false except in a Worker.Firefox for Android: Starting in Firefox for Android 30, synchronous requests on the main thread have been deprecated due to their negative impact on performance and the user experience. Therefore, the async parameter may not be false except in a Worker. |
| api.XMLHttpRequest.overrideMimeType π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Internet Explorer: Implemented via ActiveXObject |
| api.XMLHttpRequest.progress_event π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XMLHttpRequest.readyState π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| api.XMLHttpRequest.readystatechange_event π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| api.XMLHttpRequest.response π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.XMLHttpRequest.responseText π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Internet Explorer: Before Internet Explorer 10, the value of XMLHttpRequest.responseText could be read only once the request was complete. |
| api.XMLHttpRequest.responseType π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.XMLHttpRequest.responseType.arraybuffer_value | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.XMLHttpRequest.responseType.blob_value | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| api.XMLHttpRequest.responseType.document_value | Firefox | 3/13/2012 | Safari | 10/22/2013 | 588 | |
| api.XMLHttpRequest.responseType.json_value | Firefox | 1/31/2012 | Safari | 10/22/2013 | 630 | |
| api.XMLHttpRequest.responseURL π | Firefox | 9/2/2014 | Safari | 10/16/2014 | 44 | |
| api.XMLHttpRequest.responseXML π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Firefox: Before Firefox 51, an error parsing the received data added a <parsererror> node to the top of the Document and then returned the Document in whatever state it happens to be in. This was inconsistent with the specification. Starting with Firefox 51, this scenario now correctly returns null as per the spec.Firefox for Android: Before Firefox for Android 51, an error parsing the received data added a <parsererror> node to the top of the Document and then returned the Document in whatever state it happens to be in. This was inconsistent with the specification. Starting with Firefox for Android 51, this scenario now correctly returns null as per the spec. |
| api.XMLHttpRequest.send π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| api.XMLHttpRequest.send.body_ArrayBufferView_type | Firefox | 4/2/2013 | Safari | 10/22/2013 | 203 | |
| api.XMLHttpRequest.send.body_ArrayBuffer_type | Firefox | 12/20/2011 | Safari | 7/25/2012 | 218 | |
| api.XMLHttpRequest.send.body_Blob_type | Firefox | 10/24/2006 | Safari | 7/25/2012 | 2101 | |
| api.XMLHttpRequest.send.body_FormData_type | Firefox | 10/24/2006 | Safari | 7/25/2012 | 2101 | |
| api.XMLHttpRequest.send.body_URLSearchParams_type | Firefox | 1/26/2016 | Safari | 9/20/2021 | 2064 | Safari: Doesn't send the correct Content-Type header by default. See bug 227477.Safari on iOS: Doesn't send the correct Content-Type header by default. See bug 227477.WebView on iOS: Doesn't send the correct Content-Type header by default. See bug 227477. |
| api.XMLHttpRequest.setRequestHeader π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| api.XMLHttpRequest.status π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Internet Explorer: Internet Explorer version 5 and 6 supported ajax calls using ActiveXObject() |
| api.XMLHttpRequest.statusText π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Internet Explorer: Internet Explorer version 5 and 6 supported ajax calls using ActiveXObject() |
| api.XMLHttpRequest.timeout π | Firefox | 4/24/2012 | Safari | 10/22/2013 | 546 | |
| api.XMLHttpRequest.timeout_event π | Firefox | 4/24/2012 | Safari | 10/22/2013 | 546 | |
| api.XMLHttpRequest.upload π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.XMLHttpRequest.withCredentials π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | Firefox: Starting with Firefox 11, it's no longer supported to use the withCredentials attribute when performing synchronous requests. Attempting to do so throws an NS_ERROR_DOM_INVALID_ACCESS_ERR exception.Firefox for Android: Starting with Firefox for Android 14, it's no longer supported to use the withCredentials attribute when performing synchronous requests. Attempting to do so throws an NS_ERROR_DOM_INVALID_ACCESS_ERR exception.Internet Explorer: Internet Explorer versions 8 and 9 supported cross-domain requests (CORS) using XDomainRequest. |
| api.XMLHttpRequest.worker_support | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.XMLHttpRequestEventTarget π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| api.XMLHttpRequestUpload π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.XMLHttpRequestUpload.abort_event π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.XMLHttpRequestUpload.error_event π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.XMLHttpRequestUpload.load_event π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.XMLHttpRequestUpload.loadend_event π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| api.XMLHttpRequestUpload.loadstart_event π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.XMLHttpRequestUpload.progress_event π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.XMLHttpRequestUpload.timeout_event π | Firefox | 4/24/2012 | Safari | 10/22/2013 | 546 | |
| api.XMLSerializer π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XMLSerializer.XMLSerializer π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XMLSerializer.serializeToString π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathEvaluator π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathEvaluator.XPathEvaluator π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathEvaluator.createExpression π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathEvaluator.createNSResolver π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathEvaluator.evaluate π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathExpression π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathExpression.evaluate π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult.booleanValue π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult.invalidIteratorState π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult.iterateNext π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult.numberValue π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult.resultType π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult.singleNodeValue π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult.snapshotItem π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult.snapshotLength π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XPathResult.stringValue π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.XSLTProcessor π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.XSLTProcessor.XSLTProcessor π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.XSLTProcessor.clearParameters π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.XSLTProcessor.getParameter π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | Chrome: Chrome only supports string values.Chrome Android: Chrome Android only supports string values.Edge: Edge only supports string values.Quest Browser: Quest Browser only supports string values.Opera: Opera only supports string values.Opera Android: Opera only supports string values.Safari: Safari only supports string values.Safari on iOS: Safari on iOS only supports string values.Samsung Internet: Samsung Internet only supports string values.WebView Android: WebView only supports string values.WebView on iOS: WebView on iOS only supports string values. |
| api.XSLTProcessor.importStylesheet π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.XSLTProcessor.removeParameter π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.XSLTProcessor.reset π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| api.XSLTProcessor.setParameter π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | Chrome: Chrome only supports string values.Chrome Android: Chrome Android only supports string values.Edge: Edge only supports string values.Quest Browser: Quest Browser only supports string values.Opera: Opera only supports string values.Opera Android: Opera only supports string values.Safari: Safari only supports string values.Safari on iOS: Safari on iOS only supports string values.Samsung Internet: Samsung Internet only supports string values.WebView Android: WebView only supports string values.WebView on iOS: WebView on iOS only supports string values. |
| api.XSLTProcessor.transformToDocument π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | Chrome: Chrome returns null if an error occurs.Chrome Android: Chrome Android returns null if an error occurs.Edge: Edge returns null if an error occurs.Firefox: Firefox throws an exception if an error occurs.Firefox for Android: Firefox for Android throws an exception if an error occurs.Quest Browser: Quest Browser returns null if an error occurs.Opera: Opera 12.1 and earlier throws an exception if an error occurs.Opera: Opera 15 and later returns null if an error occurs.Opera Android: Opera Android 12.1 and earlier throws an exception if an error occurs.Opera Android: Opera Android 14 and later returns null if an error occurs.Safari: Safari returns null if an error occurs.Safari on iOS: Safari on iOS returns null if an error occurs.Samsung Internet: Samsung Internet returns null if an error occurs.WebView Android: WebView returns null if an error occurs.WebView on iOS: WebView on iOS returns null if an error occurs. |
| api.XSLTProcessor.transformToFragment π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | Chrome: Chrome returns null if an error occurs.Chrome Android: Chrome Android returns null if an error occurs.Edge: Edge returns null if an error occurs.Firefox: Firefox throws an exception if an error occurs.Firefox for Android: Firefox for Android throws an exception if an error occurs.Quest Browser: Quest Browser returns null if an error occurs.Opera: Opera 12.1 and earlier throws an exception if an error occurs.Opera: Opera 15 and later returns null if an error occurs.Opera Android: Opera Android 12.1 and earlier throws an exception if an error occurs.Opera Android: Opera Android 14 and later returns null if an error occurs.Safari: Safari returns null if an error occurs.Safari on iOS: Safari on iOS returns null if an error occurs.Samsung Internet: Samsung Internet returns null if an error occurs.WebView Android: WebView returns null if an error occurs.WebView on iOS: WebView on iOS returns null if an error occurs. |
| api.atob π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.atob.worker_support | Firefox | 3/22/2011 | Safari | 9/20/2016 | 2009 | |
| api.btoa π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| api.btoa.worker_support | Firefox | 3/22/2011 | Safari | 9/20/2016 | 2009 | |
| api.caches π | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | |
| api.caches.secure_context_required | Safari | 4/12/2018 | Firefox | 7/26/2022 | 1566 | |
| api.caches.worker_support | Firefox | 9/22/2015 | Safari | 4/12/2018 | 933 | |
| api.clearInterval π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: From Internet Explorer 4 through 8, clearInterval is an Object rather than a Function. This behavior was fixed in Internet Explorer 9.Node.js: Takes a Timeout object instead of the intervalID. |
| api.clearInterval.worker_support | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.clearTimeout π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Internet Explorer: From Internet Explorer 4 through 8, clearTimeout is an Object rather than a Function. This behavior was fixed in Internet Explorer 9.Node.js: Takes a Timeout object instead of the timeoutID. |
| api.clearTimeout.worker_support | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.console π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | Internet Explorer: In Internet Explorer 8 and 9, the console object is undefined when the developer tools are not open. This behavior was fixed in Internet Explorer 10. |
| api.console.assert_static π | Safari | 6/8/2009 | Firefox | 3/18/2014 | 1744 | Node.js: Throws error when assertion fails. |
| api.console.clear_static π | Safari | 10/22/2013 | Firefox | 7/2/2015 | 618 | |
| api.console.countReset_static π | Firefox | 9/5/2018 | Safari | 9/19/2019 | 379 | |
| api.console.count_static π | Safari | 6/8/2009 | Firefox | 6/10/2014 | 1828 | |
| api.console.debug_static π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | Node.js: Since Node.js 8.10.0, this method is an alias for console.log. |
| api.console.dir_static π | Safari | 6/8/2009 | Firefox | 11/8/2011 | 883 | |
| api.console.dirxml_static π | Safari | 6/8/2009 | Firefox | 7/2/2015 | 2215 | Node.js: Does not use Logger to log data. |
| api.console.error_static π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.console.groupCollapsed_static π | Safari | 7/20/2011 | Firefox | 12/20/2011 | 153 | Node.js: Alias for console.group |
| api.console.groupEnd_static π | Safari | 6/8/2009 | Firefox | 12/20/2011 | 925 | |
| api.console.group_static π | Safari | 6/8/2009 | Firefox | 12/20/2011 | 925 | |
| api.console.info_static π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | Node.js: Alias for console.log |
| api.console.log_static π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| api.console.substitution_strings | Safari | 10/26/2007 | Firefox | 12/20/2011 | 1516 | Chrome: In version 28, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1.Chrome Android: In version 28, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1.Deno: Before Deno 1.4, %c is not supported.Deno: %c only supports CSS properties color, background-color, font-weight, font-style, text-decoration-color, and text-decoration-line.Edge: Before Edge 79, %c is not supported.Edge: Before Edge 79, %d outputs a 0 if the specified value isn't a number.Internet Explorer: %c is not supported.Internet Explorer: %d outputs a 0 if the specified value isn't a number.Quest Browser: In version 5.0, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1.Samsung Internet: In Samsung Internet 1.5, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1.WebView Android: In version 28, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1. |
| api.console.table_static π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| api.console.timeEnd_static π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| api.console.timeLog_static π | Firefox | 9/5/2018 | Safari | 9/19/2019 | 379 | |
| api.console.timeStamp_static | Safari | 7/25/2012 | Firefox | 7/2/2015 | 1072 | |
| api.console.time_static π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| api.console.trace_static π | Safari | 6/8/2009 | Firefox | 8/16/2011 | 799 | |
| api.console.warn_static π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | Node.js: Alias for console.error |
| api.console.worker_support | Safari | 10/22/2013 | Firefox | 4/29/2014 | 189 | |
| api.createImageBitmap π | Firefox | 11/3/2015 | Safari | 9/20/2021 | 2148 | |
| api.createImageBitmap.options_colorSpaceConversion_parameter | Safari | 9/20/2021 | Firefox | 3/8/2022 | 169 | |
| api.createImageBitmap.options_imageOrientation_parameter | Safari | 9/20/2021 | Firefox | 10/5/2021 | 15 | |
| api.createImageBitmap.options_imageOrientation_parameter.from-image | Safari | 9/12/2022 | Firefox | 3/14/2023 | 183 | |
| api.createImageBitmap.options_premultiplyAlpha_parameter | Firefox | 10/5/2021 | Safari | 9/18/2023 | 713 | Safari: If the source image is an ImageData object, then the premultiplyAlpha option does nothing. See bug 237082.Safari on iOS: If the source image is an ImageData object, then the premultiplyAlpha option does nothing. See bug 237082.WebView on iOS: If the source image is an ImageData object, then the premultiplyAlpha option does nothing. See bug 237082. |
| api.createImageBitmap.options_resizeHeight_parameter | Safari | 9/20/2021 | Firefox | 3/8/2022 | 169 | |
| api.createImageBitmap.options_resizeWidth_parameter | Safari | 9/20/2021 | Firefox | 3/8/2022 | 169 | |
| api.createImageBitmap.svgimageelement_as_source_image | Firefox | 1/29/2019 | Safari | 12/11/2023 | 1777 | |
| api.crossOriginIsolated π | Firefox | 1/7/2020 | Safari | 12/13/2021 | 706 | |
| api.crypto π | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | Node.js: Available as a part of the crypto module. |
| api.crypto.worker_support | Firefox | 8/2/2016 | Safari | 3/27/2017 | 237 | |
| api.fetch π | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | Deno: Fetching with a "manual" redirect mode does not result in a "opaqueredirect" response, but a regular response. |
| api.fetch.authorization_removed_cross_origin π | Safari | 10/24/2022 | Firefox | 3/14/2023 | 141 | |
| api.fetch.blob_data_support | Firefox | 7/2/2015 | Safari | 3/27/2017 | 634 | |
| api.fetch.init_keepalive_parameter | Safari | 9/19/2019 | Firefox | 11/26/2024 | 1895 | |
| api.fetch.init_referrerPolicy_parameter | Firefox | 3/7/2017 | Safari | 4/12/2018 | 401 | |
| api.fetch.init_signal_parameter | Firefox | 11/14/2017 | Safari | 4/12/2018 | 149 | |
| api.indexedDB π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| api.indexedDB.worker_support | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| api.isSecureContext π | Firefox | 9/20/2016 | Safari | 4/12/2018 | 569 | |
| api.isSecureContext.worker_support | Firefox | 3/7/2017 | Safari | 4/12/2018 | 401 | |
| api.origin π | Firefox | 6/13/2017 | Safari | 9/19/2017 | 98 | |
| api.performance π | Firefox | 9/27/2011 | Safari | 10/16/2014 | 1115 | Node.js: Available as a part of the perf_hooks module. |
| api.performance.worker_support | Firefox | 12/1/2014 | Safari | 9/19/2017 | 1023 | Node.js: Available as a part of the perf_hooks module. |
| api.queueMicrotask π | Safari | 3/25/2019 | Firefox | 9/3/2019 | 162 | |
| api.reportError π | Firefox | 10/5/2021 | Safari | 3/14/2022 | 160 | |
| api.setInterval π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Node.js: Returns a Timeout object instead of the intervalID.Node.js: Does not support passing a code string and throws when the first parameter is not a function. |
| api.setInterval.supports_parameters_for_callback | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| api.setInterval.worker_support | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.setTimeout π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Node.js: Returns a Timeout object instead of the timeoutID.Node.js: Does not support passing a code string and throws when the first parameter is not a function. |
| api.setTimeout.supports_parameters_for_callback | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| api.setTimeout.worker_support | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| api.structuredClone π | Firefox | 11/2/2021 | Safari | 3/14/2022 | 132 | Deno: The message parameter does not support cloning Blob values.Deno: The message parameter does not support cloning Blob values.Deno: The transfer parameter does not accept ArrayBuffer items. Passing an ArrayBuffer results in an error being thrown. |
| API | First Browser | Date | Last Browser | Date | Days | Notes |
|---|---|---|---|---|---|---|
| css.at-rules.charset π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | Firefox: Firefox 1 supported an invalid syntax where the character encoding is not between single or double quotes.Internet Explorer: From Internet Explorer 5.5 to IE 7 (inclusive), Internet Explorer supported an invalid syntax where the character encoding is not between single or double quotes. |
| css.at-rules.container π | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| css.at-rules.counter-style π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| css.at-rules.counter-style.additive-symbols π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| css.at-rules.counter-style.fallback π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| css.at-rules.counter-style.negative π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| css.at-rules.counter-style.pad π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| css.at-rules.counter-style.prefix π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| css.at-rules.counter-style.range π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| css.at-rules.counter-style.suffix π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| css.at-rules.counter-style.symbols π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | Chrome: Does not support <image> as a value for the symbols descriptor.Chrome Android: Does not support <image> as a value for the symbols descriptor.Edge: Does not support <image> as a value for the symbols descriptor.Firefox: Does not support <image> as a value for the symbols descriptor.Firefox for Android: Does not support <image> as a value for the symbols descriptor.Quest Browser: Does not support <image> as a value for the symbols descriptor.Opera: Does not support <image> as a value for the symbols descriptor.Opera Android: Does not support <image> as a value for the symbols descriptor.Samsung Internet: Does not support <image> as a value for the symbols descriptor.WebView Android: Does not support <image> as a value for the symbols descriptor. |
| css.at-rules.counter-style.system π | Firefox | 10/14/2014 | Safari | 9/18/2023 | 3261 | |
| css.at-rules.font-face π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.at-rules.font-face.OpenType_COLRv0 | Firefox | 7/22/2014 | Safari | 4/12/2018 | 1360 | |
| css.at-rules.font-face.OpenType_SVG | Firefox | 7/22/2014 | Safari | 3/25/2019 | 1707 | |
| css.at-rules.font-face.WOFF π | Firefox | 6/30/2009 | Safari | 7/20/2011 | 750 | |
| css.at-rules.font-face.WOFF_2 π | Firefox | 7/2/2015 | Safari | 9/20/2016 | 446 | Safari: Supported only on macOS 10.12 (Sierra) and later. |
| css.at-rules.font-face.font-display π | Firefox | 1/23/2018 | Safari | 4/12/2018 | 79 | |
| css.at-rules.font-face.font-family π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.at-rules.font-face.font-feature-settings π | Firefox | 12/1/2014 | Safari | 9/20/2016 | 659 | Firefox: The ISO/IEC CD 14496-22 3rd edition suggests using the ssty feature to provide glyph variants more suitable for use in scripts (for example primes used as superscripts). Starting with Firefox 29, this is done automatically by the MathML rendering engine. The ISO/IEC CD 14496-22 3rd edition also suggests applying the dtls feature to letters when placing mathematical accents to get dotless forms (for example dotless i, j with a hat). Starting with Firefox 35, this is done automatically by the MathML rendering engine. You can override the default values determined by the MathML rendering engine with CSS.Firefox: From Firefox 4 to Firefox 14 (inclusive), Firefox supported an older, slightly different syntax. See OpenType Font Feature support in Firefox 4.Firefox for Android: The ISO/IEC CD 14496-22 3rd edition suggests using the ssty feature to provide glyph variants more suitable for use in scripts (for example primes used as superscripts). Starting with Firefox for Android 29, this is done automatically by the MathML rendering engine. The ISO/IEC CD 14496-22 3rd edition also suggests applying the dtls feature to letters when placing mathematical accents to get dotless forms (for example dotless i, j with a hat). Starting with Firefox for Android 35, this is done automatically by the MathML rendering engine. You can override the default values determined by the MathML rendering engine with CSS.Firefox for Android: From Firefox for Android 4 to Firefox for Android 14 (inclusive), Firefox for Android supported an older, slightly different syntax. See OpenType Font Feature support in Firefox for Android 4. |
| css.at-rules.font-face.font-stretch π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.at-rules.font-face.font-style π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.at-rules.font-face.font-variant | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.at-rules.font-face.font-weight π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.at-rules.font-face.size-adjust π | Firefox | 9/7/2021 | Safari | 9/18/2023 | 741 | |
| css.at-rules.font-face.src π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.at-rules.font-face.src.format_variations | Safari | 9/19/2017 | Firefox | 9/5/2018 | 351 | |
| css.at-rules.font-face.src.tech_keyword | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.at-rules.font-face.unicode-range π | Safari | 3/18/2008 | Firefox | 2/24/2015 | 2534 | |
| css.at-rules.font-feature-values π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.at-rules.font-feature-values.annotation | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.at-rules.font-feature-values.character-variant | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.at-rules.font-feature-values.historical-forms | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.at-rules.font-feature-values.ornaments | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.at-rules.font-feature-values.styleset | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.at-rules.font-feature-values.stylistic | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.at-rules.font-feature-values.swash | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.at-rules.font-palette-values π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| css.at-rules.font-palette-values.base-palette π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| css.at-rules.font-palette-values.font-family π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| css.at-rules.font-palette-values.override-colors π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| css.at-rules.import π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.at-rules.import.layer π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| css.at-rules.keyframes π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.at-rules.keyframes.ignore_important_declarations | Firefox | 2/19/2013 | Safari | 3/27/2017 | 1497 | |
| css.at-rules.layer π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| css.at-rules.media π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.at-rules.media.-webkit-device-pixel-ratio π | Safari | 10/26/2007 | Firefox | 10/23/2018 | 4015 | Firefox: Implemented as an alias for -moz-device-pixel-ratio.Firefox for Android: Implemented as an alias for -moz-device-pixel-ratio. |
| css.at-rules.media.-webkit-max-device-pixel-ratio π | Safari | 10/26/2007 | Firefox | 10/23/2018 | 4015 | Firefox: Implemented as an alias for max--moz-device-pixel-ratio.Firefox for Android: Implemented as an alias for max--moz-device-pixel-ratio. |
| css.at-rules.media.-webkit-min-device-pixel-ratio π | Safari | 10/26/2007 | Firefox | 10/23/2018 | 4015 | Firefox: Implemented as an alias for min--moz-device-pixel-ratio.Firefox for Android: Implemented as an alias for min--moz-device-pixel-ratio. |
| css.at-rules.media.-webkit-transform-3d π | Safari | 6/8/2009 | Firefox | 9/20/2016 | 2661 | |
| css.at-rules.media.any-hover π | Safari | 9/30/2015 | Firefox | 12/11/2018 | 1168 | |
| css.at-rules.media.any-pointer π | Safari | 9/30/2015 | Firefox | 12/11/2018 | 1168 | |
| css.at-rules.media.aspect-ratio π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| css.at-rules.media.calc π | Firefox | 3/13/2018 | Safari | 9/17/2018 | 188 | |
| css.at-rules.media.color π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| css.at-rules.media.color-gamut π | Safari | 9/20/2016 | Firefox | 2/14/2023 | 2338 | |
| css.at-rules.media.device-aspect-ratio π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| css.at-rules.media.device-height π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| css.at-rules.media.device-width π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| css.at-rules.media.display-mode π | Firefox | 6/7/2016 | Safari | 9/19/2019 | 1199 | Firefox: Firefox 47 and later support display-mode values fullscreen and browser. Firefox 57 added support for minimal-ui and standalone values.Firefox for Android: Only supports the browser value, which always reports true. |
| css.at-rules.media.dynamic-range π | Safari | 3/24/2020 | Firefox | 5/3/2022 | 770 | |
| css.at-rules.media.forced-colors π | Firefox | 6/1/2021 | Safari | 9/12/2022 | 468 | |
| css.at-rules.media.grid π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| css.at-rules.media.height π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| css.at-rules.media.hover π | Safari | 9/30/2015 | Firefox | 12/11/2018 | 1168 | Chrome: Before Chrome 41, the implementation was buggy and reported (hover: none) on non-touch-based computers with a mouse/trackpad. See bug 40397980.Opera: Before Opera 28, the implementation was buggy and reported (hover: none) on non-touch-based computers with a mouse/trackpad. See bug 40397980. |
| css.at-rules.media.inverted-colors π | Safari | 3/21/2016 | Firefox | 6/6/2023 | 2633 | |
| css.at-rules.media.media_features | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.at-rules.media.monochrome π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| css.at-rules.media.nested-queries | Firefox | 3/13/2012 | Safari | 10/22/2013 | 588 | |
| css.at-rules.media.or_syntax | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | |
| css.at-rules.media.orientation π | Firefox | 10/24/2006 | Safari | 6/7/2010 | 1322 | |
| css.at-rules.media.overflow-block π | Firefox | 3/19/2019 | Safari | 9/18/2023 | 1644 | |
| css.at-rules.media.overflow-inline π | Firefox | 3/19/2019 | Safari | 9/18/2023 | 1644 | |
| css.at-rules.media.pointer π | Safari | 9/30/2015 | Firefox | 12/11/2018 | 1168 | |
| css.at-rules.media.prefers-color-scheme π | Safari | 3/25/2019 | Firefox | 5/21/2019 | 57 | |
| css.at-rules.media.prefers-contrast π | Safari | 4/26/2021 | Firefox | 5/31/2022 | 400 | |
| css.at-rules.media.prefers-reduced-motion π | Safari | 3/27/2017 | Firefox | 10/23/2018 | 575 | |
| css.at-rules.media.range_syntax | Firefox | 6/28/2022 | Safari | 3/27/2023 | 272 | Firefox: Only supports range notations where the feature name comes before any value (width > 500px)Firefox for Android: Only supports range notations where the feature name comes before any value (width > 500px) |
| css.at-rules.media.resolution π | Firefox | 11/8/2011 | Safari | 9/12/2022 | 3961 | |
| css.at-rules.media.scripting π | Firefox | 5/9/2023 | Safari | 9/18/2023 | 132 | |
| css.at-rules.media.update π | Firefox | 6/28/2022 | Safari | 9/18/2023 | 447 | |
| css.at-rules.media.width π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| css.at-rules.namespace π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.at-rules.page π | Firefox | 2/19/2013 | Safari | 12/11/2024 | 4313 | |
| css.at-rules.page.size π | Firefox | 12/7/2021 | Safari | 12/11/2024 | 1100 | |
| css.at-rules.page.size.jis-b4 π | Firefox | 12/7/2021 | Safari | 12/11/2024 | 1100 | |
| css.at-rules.page.size.jis-b5 π | Firefox | 12/7/2021 | Safari | 12/11/2024 | 1100 | |
| css.at-rules.property π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| css.at-rules.property.inherits π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| css.at-rules.property.initial-value π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| css.at-rules.property.syntax π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| css.at-rules.scope π | Safari | 3/5/2024 | Firefox | 7/9/2024 | 126 | |
| css.at-rules.starting-style π | Safari | 5/13/2024 | Firefox | 8/6/2024 | 85 | Firefox: Does not yet support animating from display: noneFirefox for Android: Does not yet support animating from display: none |
| css.at-rules.supports π | Firefox | 6/25/2013 | Safari | 9/30/2015 | 827 | |
| css.at-rules.supports.font-format | Firefox | 10/18/2022 | Safari | 9/18/2023 | 335 | |
| css.at-rules.supports.font-tech | Firefox | 10/18/2022 | Safari | 9/18/2023 | 335 | |
| css.at-rules.supports.selector | Firefox | 9/3/2019 | Safari | 4/26/2021 | 601 | |
| css.properties.-webkit-mask-position-x | Safari | 3/18/2008 | Firefox | 9/20/2016 | 3108 | |
| css.properties.-webkit-mask-position-y | Safari | 3/18/2008 | Firefox | 9/20/2016 | 3108 | |
| css.properties.-webkit-text-fill-color π | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.-webkit-text-security | Safari | 10/26/2007 | Firefox | 6/6/2023 | 5702 | |
| css.properties.-webkit-text-stroke π | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.-webkit-text-stroke-color π | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.-webkit-text-stroke-width π | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.accent-color π | Firefox | 9/7/2021 | Safari | 3/14/2022 | 188 | Safari: Safari does not adjust the color of glyphs (such as checkmarks) on form controls to maintain contrast. See bug 244233.Safari on iOS: Safari on iOS does not adjust the color of glyphs (such as checkmarks) on form controls to maintain contrast. See bug 244233.WebView on iOS: WebView on iOS does not adjust the color of glyphs (such as checkmarks) on form controls to maintain contrast. See bug 244233. |
| css.properties.accent-color.auto | Firefox | 9/7/2021 | Safari | 3/14/2022 | 188 | |
| css.properties.align-content π | Firefox | 3/18/2014 | Safari | 9/30/2015 | 561 | |
| css.properties.align-content.block_context π | Safari | 3/5/2024 | Firefox | 4/16/2024 | 42 | |
| css.properties.align-content.flex_context π | Firefox | 3/18/2014 | Safari | 9/30/2015 | 561 | |
| css.properties.align-content.flex_context.baseline | Safari | 9/30/2015 | Firefox | 3/8/2016 | 160 | |
| css.properties.align-content.flex_context.first_baseline | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| css.properties.align-content.flex_context.last_baseline | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | Safari: This value is recognized, but has no effect. See bug 235005.Safari on iOS: This value is recognized, but has no effect. See bug 235005.WebView on iOS: This value is recognized, but has no effect. See bug 235005. |
| css.properties.align-content.flex_context.safe_unsafe | Firefox | 10/23/2018 | Safari | 7/29/2024 | 2106 | Chrome: Before version 115, this value is recognized, but has no effect.Chrome Android: Before version 115, this value is recognized, but has no effect.Edge: Before version 115, this value is recognized, but has no effect.Opera: Before version 101, this value is recognized, but has no effect.Opera Android: Before version 77, this value is recognized, but has no effect.Samsung Internet: Before version 23.0, this value is recognized, but has no effect.WebView Android: Before version 115, this value is recognized, but has no effect. |
| css.properties.align-content.flex_context.space-evenly | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| css.properties.align-content.flex_context.start_end | Firefox | 3/8/2016 | Safari | 7/20/2022 | 2325 | Opera: Before version 79, this value is recognized, but has no effect.Opera Android: This value is recognized, but has no effect. |
| css.properties.align-content.flex_context.stretch | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | |
| css.properties.align-content.grid_context π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.align-items π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | |
| css.properties.align-items.flex_context π | Firefox | 4/2/2013 | Safari | 10/22/2013 | 203 | Chrome: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome implements the new behavior beginning with Chrome 52.Chrome Android: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome Android implements the new behavior beginning with Chrome Android 52.Firefox: Multi-line flexbox has been supported since Firefox 28.Firefox for Android: Multi-line flexbox has been supported since Firefox for Android 28.Internet Explorer: In Internet Explorer 10 and 11, if column flex items have align-items: center; set on them and their content is too large, then they will overflow the bounds of their container. See Flexbug #2.Opera: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Opera implements the new behavior beginning with Opera 39.Opera Android: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Opera Android implements the new behavior beginning with Opera Android 41.Samsung Internet: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Samsung Internet implements the new behavior beginning with Samsung Internet 6.0.WebView Android: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. WebView Android implements the new behavior beginning with WebView Android 52. |
| css.properties.align-items.flex_context.baseline | Safari | 10/22/2013 | Firefox | 3/18/2014 | 147 | |
| css.properties.align-items.flex_context.first_baseline | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| css.properties.align-items.flex_context.last_baseline | Firefox | 3/7/2017 | Safari | 12/13/2022 | 2107 | |
| css.properties.align-items.flex_context.safe_unsafe | Firefox | 10/23/2018 | Safari | 7/29/2024 | 2106 | Chrome: Before version 115, this value is recognized, but has no effect.Chrome Android: Before version 115, this value is recognized, but has no effect.Edge: Before version 115, this value is recognized, but has no effect.Opera: Before version 101, this value is recognized, but has no effect.Opera Android: Before version 77, this value is recognized, but has no effect.Samsung Internet: Before version 23.0, this value is recognized, but has no effect.WebView Android: Before version 115, this value is recognized, but has no effect. |
| css.properties.align-items.flex_context.start_end | Firefox | 3/8/2016 | Safari | 3/14/2022 | 2197 | |
| css.properties.align-items.grid_context π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.align-items.grid_context.start_end | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| css.properties.align-self π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | |
| css.properties.align-self.flex_context π | Firefox | 4/2/2013 | Safari | 10/22/2013 | 203 | Chrome: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome implements the new behavior beginning with Chrome 52.Chrome Android: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome Android implements the new behavior beginning with Chrome Android 52.Firefox: Before Firefox 27, only single-line flexbox is supported.Firefox for Android: Before Firefox for Android 27, only single-line flexbox is supported.Samsung Internet: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Samsung Internet implements the new behavior beginning with Samsung Internet 6.0.WebView Android: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. WebView Android implements the new behavior beginning with WebView Android 52. |
| css.properties.align-self.flex_context.baseline | Safari | 10/22/2013 | Firefox | 3/18/2014 | 147 | |
| css.properties.align-self.flex_context.first_baseline | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| css.properties.align-self.flex_context.last_baseline | Firefox | 3/7/2017 | Safari | 12/13/2022 | 2107 | |
| css.properties.align-self.flex_context.safe_unsafe | Firefox | 10/23/2018 | Safari | 7/29/2024 | 2106 | Chrome: Before version 115, this value is recognized, but has no effect.Chrome Android: Before version 115, this value is recognized, but has no effect.Edge: Before version 115, this value is recognized, but has no effect.Opera: Before version 101, this value is recognized, but has no effect.Opera Android: Before version 77, this value is recognized, but has no effect.Samsung Internet: Before version 23.0, this value is recognized, but has no effect.WebView Android: Before version 115, this value is recognized, but has no effect. |
| css.properties.align-self.flex_context.start_end | Firefox | 3/8/2016 | Safari | 3/14/2022 | 2197 | Opera: Before version 79, this value is recognized, but has no effect. |
| css.properties.align-self.flex_context.stretch | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | |
| css.properties.align-self.grid_context π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | Internet Explorer: Internet Explorer 10 and 11 have the property -ms-grid-row-align, which acts in a similar way to align-self. |
| css.properties.all π | Firefox | 2/4/2014 | Safari | 3/21/2016 | 776 | |
| css.properties.animation π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | WebView Android: The animation-fill-mode property is not supported in Android browsers below 2.3. |
| css.properties.animation-composition π | Safari | 9/12/2022 | Firefox | 7/4/2023 | 295 | |
| css.properties.animation-delay π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | Firefox: Before Firefox 57, Firefox does not repaint elements outside the viewport that are animated into the viewport with a delay. This bug affects only some platforms, such as Windows. |
| css.properties.animation-direction π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.animation-direction.alternate π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| css.properties.animation-direction.alternate-reverse π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| css.properties.animation-direction.normal π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| css.properties.animation-direction.reverse π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| css.properties.animation-duration π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | Internet Explorer: Once the element has loaded, changing the value of this property has no effect. |
| css.properties.animation-fill-mode π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.animation-fill-mode.backwards π | Safari | 6/7/2010 | Firefox | 6/21/2011 | 379 | |
| css.properties.animation-fill-mode.both π | Safari | 6/7/2010 | Firefox | 6/21/2011 | 379 | |
| css.properties.animation-fill-mode.forwards π | Safari | 6/7/2010 | Firefox | 6/21/2011 | 379 | |
| css.properties.animation-fill-mode.none π | Safari | 6/7/2010 | Firefox | 6/21/2011 | 379 | |
| css.properties.animation-iteration-count π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.animation-iteration-count.infinite π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| css.properties.animation-name π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.animation-name.none π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| css.properties.animation-play-state π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.animation-play-state.paused π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| css.properties.animation-play-state.running π | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | |
| css.properties.animation-timing-function π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.animation-timing-function.jump | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | |
| css.properties.appearance π | Firefox | 8/25/2020 | Safari | 3/14/2022 | 566 | |
| css.properties.appearance.auto π | Firefox | 8/25/2020 | Safari | 3/14/2022 | 566 | |
| css.properties.appearance.button π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.appearance.checkbox π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.appearance.listbox π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.appearance.menulist π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.appearance.menulist-button π | Safari | 10/26/2007 | Firefox | 8/25/2020 | 4687 | Firefox: See bug 1481615.Firefox for Android: See bug 1481615. |
| css.properties.appearance.meter π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.appearance.none π | Safari | 10/26/2007 | Firefox | 6/13/2017 | 3518 | Firefox: Doesn't work with <input type="checkbox"> and <input type="radio">.Firefox for Android: Doesn't work with <input type="checkbox"> and <input type="radio">. |
| css.properties.appearance.progress-bar π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.appearance.radio π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.appearance.searchfield π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.appearance.textarea π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.appearance.textfield π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.aspect-ratio π | Firefox | 6/1/2021 | Safari | 9/20/2021 | 111 | |
| css.properties.aspect-ratio.auto π | Firefox | 6/1/2021 | Safari | 9/20/2021 | 111 | |
| css.properties.backdrop-filter π | Firefox | 7/26/2022 | Safari | 9/16/2024 | 783 | |
| css.properties.backface-visibility π | Firefox | 10/9/2012 | Safari | 3/14/2022 | 3443 | |
| css.properties.background π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background.SVG_image_as_background | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| css.properties.background.background-clip | Safari | 7/20/2011 | Firefox | 6/25/2013 | 706 | |
| css.properties.background.background-origin | Safari | 7/20/2011 | Firefox | 6/25/2013 | 706 | |
| css.properties.background.background-size | Safari | 7/20/2011 | Firefox | 12/20/2011 | 153 | |
| css.properties.background.multiple_backgrounds | Safari | 4/15/2005 | Firefox | 1/21/2010 | 1742 | |
| css.properties.background-attachment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background-attachment.fixed π | Firefox | 10/24/2006 | Safari | 3/14/2022 | 5620 | Safari: local is recognized but has no effect. See bug 219324.Safari on iOS: fixed is recognized but has no effect. See bug 219324.WebView on iOS: fixed is recognized but has no effect. See bug 219324. |
| css.properties.background-attachment.local π | Firefox | 10/29/2013 | Safari | 3/14/2022 | 3058 | Safari: local is recognized but has no effect. See bug 219324.Safari on iOS: local is recognized but has no effect. See bug 219324.Safari on iOS: If -webkit-overflow-scrolling: touch is set, then local has no effect.WebView on iOS: local is recognized but has no effect. See bug 219324.WebView on iOS: If -webkit-overflow-scrolling: touch is set, then local has no effect. |
| css.properties.background-attachment.multiple_backgrounds | Safari | 4/15/2005 | Firefox | 1/21/2010 | 1742 | |
| css.properties.background-attachment.scroll π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background-blend-mode π | Firefox | 6/10/2014 | Safari | 10/16/2014 | 128 | |
| css.properties.background-clip π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Chrome: Chrome accepts alternate synonyms to its values: padding, border, and content.Chrome Android: Chrome Android accepts alternate synonyms to its values: padding, border, and content.Edge: Since Edge 79, accepts alternate synonyms to its values: padding, border, and content.Firefox: Used the -moz-background-clip: padding | border syntax.Internet Explorer: In IE 7 and IE 8 of Internet Explorer, this property always behaved like background-clip: padding-box when overflow was hidden, auto, or scroll.Quest Browser: Quest Browser accepts alternate synonyms to its values: padding, border, and content.Opera: Opera accepts alternate synonyms to its values: padding, border, and content.Opera Android: Opera accepts alternate synonyms to its values: padding, border, and content.Safari: Safari accepts alternate synonyms to its values: padding, border, and content.Safari on iOS: Safari accepts alternate synonyms to its values: padding, border, and content.Samsung Internet: Samsung Internet accepts alternate synonyms to its values: padding, border, and content.WebView Android: WebView Android accepts alternate synonyms to its values: padding, border, and content.WebView on iOS: Safari accepts alternate synonyms to its values: padding, border, and content. |
| css.properties.background-clip.border-box π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| css.properties.background-clip.content-box π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | Internet Explorer: In IE 7 and IE 9 of Internet Explorer, it always behaved like background-clip: padding-box if overflow: hidden | auto | scroll |
| css.properties.background-clip.padding-box π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| css.properties.background-clip.text π | Firefox | 9/20/2016 | Safari | 9/16/2020 | 1457 | Chrome: The text value is only supported by -webkit-background-clip (and not by background-clip; see bug 40229927).Chrome Android: The text value is only supported by -webkit-background-clip (and not by background-clip; see bug 40229927).Edge: The text value is only supported by -webkit-background-clip (and not by background-clip; see bug 40229927).Edge: Before Edge 15, this value was supported with the prefixed version of the property only.Firefox: Does not work with background-attachment: fixed (bug 1313757), in multi-layer backgrounds with other values (bug 1481498), and in some other special cases (see bug 1656784).Firefox for Android: Does not work with background-attachment: fixed (bug 1313757), in multi-layer backgrounds with other values (bug 1481498), and in some other special cases (see bug 1656784).Quest Browser: The text value is only supported by -webkit-background-clip (and not by background-clip; see bug 40229927).Opera: The text value is only supported by -webkit-background-clip (and not by background-clip; see bug 40229927).Opera Android: The text value is only supported by -webkit-background-clip (and not by background-clip; see bug 40229927).Safari: The text value is only supported by -webkit-background-clip (and not by background-clip).Safari on iOS: The text value is only supported by -webkit-background-clip (and not by background-clip).Samsung Internet: The text value is only supported by -webkit-background-clip (and not by background-clip; see bug 40229927).WebView Android: The text value is only supported by -webkit-background-clip (and not by background-clip; see bug 40229927).WebView on iOS: The text value is only supported by -webkit-background-clip (and not by background-clip). |
| css.properties.background-color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: In Internet Explorer 8 and 9, there is a bug where a computed background-color of transparent causes click events to not get fired on overlaid elements. |
| css.properties.background-image π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: If the browser.display.use_document_colors user preference in about:config is set to false, background images will not be displayed.Firefox for Android: If the browser.display.use_document_colors user preference in about:config is set to false, background images will not be displayed. |
| css.properties.background-image.gradients π | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | Chrome: Some versions support only experimental gradients prefixed with -webkit.Chrome Android: Some versions support only experimental gradients prefixed with -webkit.Firefox: Some versions support only experimental gradients prefixed with -moz.Firefox for Android: Some versions support only experimental gradients prefixed with -moz.Quest Browser: Some versions support only experimental gradients prefixed with -webkit.Opera: Some versions support only experimental gradients prefixed with -o.Opera Android: Some versions support only experimental gradients prefixed with -webkit.Safari: Some versions support only experimental gradients prefixed with -webkit.Safari on iOS: Some versions support only experimental gradients prefixed with -webkit.Samsung Internet: Some versions support only experimental gradients prefixed with -webkit.WebView Android: Some versions support only experimental gradients prefixed with -webkit.WebView on iOS: Some versions support only experimental gradients prefixed with -webkit. |
| css.properties.background-image.image-set π | Firefox | 6/1/2021 | Safari | 9/18/2023 | 839 | Chrome: Support for url images only and x is the only supported resolution unit.Chrome Android: Support for url images only and x is the only supported resolution unit.Edge: Support for url images only and x is the only supported resolution unit.Firefox: The type() function is not supported as an argument to image-set().Firefox for Android: The type() function is not supported as an argument to image-set().Quest Browser: Support for url images only and x is the only supported resolution unit.Opera: Support for url images only and x is the only supported resolution unit.Opera Android: Support for url images only and x is the only supported resolution unit.Safari: The type() function is not supported as an argument to image-set().Safari: The type() function is not supported as an argument to image-set().Safari: Support for url images only and x is the only supported resolution unit.Safari: Support for url images only and x is the only supported resolution unit.Safari on iOS: The type() function is not supported as an argument to image-set().Safari on iOS: The type() function is not supported as an argument to image-set().Safari on iOS: Support for url images only and x is the only supported resolution unit.Safari on iOS: Support for url images only and x is the only supported resolution unit.Samsung Internet: Support for url images only and x is the only supported resolution unit.WebView Android: Support for url images only and x is the only supported resolution unit.WebView on iOS: The type() function is not supported as an argument to image-set().WebView on iOS: The type() function is not supported as an argument to image-set().WebView on iOS: Support for url images only and x is the only supported resolution unit.WebView on iOS: Support for url images only and x is the only supported resolution unit. |
| css.properties.background-image.multiple_backgrounds | Safari | 4/15/2005 | Firefox | 1/21/2010 | 1742 | |
| css.properties.background-image.none π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background-image.svg_images | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Safari: Support of SVG in CSS background is incomplete.Safari on iOS: Support of SVG in CSS background is incomplete.WebView on iOS: Support of SVG in CSS background is incomplete. |
| css.properties.background-origin π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | Chrome: Chrome accepts alternate synonyms to its values: padding, border, and content.Chrome Android: Chrome Android accepts alternate synonyms to its values: padding, border, and content.Edge: Since Edge 79, accepts alternate synonyms to its values: padding, border, and content.Firefox: Used the -moz-background-clip: padding | border syntax.Internet Explorer: In IE 7 and before, Internet explorer was behaving as if background-origin: border-box was set. In Internet Explorer 8, as if background-origin: padding-box, the regular default value, was set.Quest Browser: Quest Browser accepts alternate synonyms to its values: padding, border, and content.Opera: Opera accepts alternate synonyms to its values: padding, border, and content.Opera Android: Opera accepts alternate synonyms to its values: padding, border, and content.Safari: Webkit accepts alternate synonyms to its values: padding, border, and content.Safari on iOS: Webkit accepts alternate synonyms to its values: padding, border, and content.Samsung Internet: Samsung Internet accepts alternate synonyms to its values: padding, border, and content.WebView Android: WebView accepts alternate synonyms to its values: padding, border, and content.WebView on iOS: Webkit accepts alternate synonyms to its values: padding, border, and content. |
| css.properties.background-origin.border-box π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| css.properties.background-origin.content-box π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | Internet Explorer: In IE 7 and IE 9 of Internet Explorer, it always behaved like background-clip: padding if overflow: hidden | auto | scroll. |
| css.properties.background-origin.padding-box π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| css.properties.background-position π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background-position.bottom π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.background-position.center π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.background-position.left π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.background-position.multiple_backgrounds | Safari | 4/15/2005 | Firefox | 1/21/2010 | 1742 | |
| css.properties.background-position.right π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.background-position.side-relative_values | Firefox | 6/5/2012 | Safari | 10/22/2013 | 504 | |
| css.properties.background-position.top π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.background-position-x π | Safari | 6/23/2003 | Firefox | 9/20/2016 | 4838 | |
| css.properties.background-position-x.side-relative_values | Firefox | 9/20/2016 | Safari | 3/14/2022 | 2001 | |
| css.properties.background-position-y π | Safari | 6/23/2003 | Firefox | 9/20/2016 | 4838 | |
| css.properties.background-position-y.side-relative_values | Firefox | 9/20/2016 | Safari | 3/14/2022 | 2001 | |
| css.properties.background-repeat π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background-repeat.2-value | Safari | 6/7/2010 | Firefox | 6/5/2012 | 729 | |
| css.properties.background-repeat.multiple_backgrounds | Safari | 4/15/2005 | Firefox | 1/21/2010 | 1742 | |
| css.properties.background-repeat.no-repeat π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background-repeat.repeat π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background-repeat.repeat-x π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background-repeat.repeat-y π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.background-repeat.round π | Safari | 10/16/2014 | Firefox | 9/20/2016 | 705 | |
| css.properties.background-repeat.space π | Safari | 10/16/2014 | Firefox | 9/20/2016 | 705 | |
| css.properties.background-size π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Chrome: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords.Chrome Android: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords.Quest Browser: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords.Opera: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords.Opera: Opera 9.5's computation of the background positioning area is incorrect for fixed backgrounds. Opera 9.5 also interprets the two-value form as a horizontal scaling factor and, from appearances, a vertical clipping dimension. This has been fixed in Opera 10.Opera Android: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords.Opera Android: Opera 9.5's computation of the background positioning area is incorrect for fixed backgrounds. Opera 9.5 also interprets the two-value form as a horizontal scaling factor and, from appearances, a vertical clipping dimension. This has been fixed in Opera 10.Safari: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords.Safari on iOS: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords.Samsung Internet: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords.WebView Android: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords.WebView on iOS: WebKit-based browsers originally implemented an older draft of CSS3 background-size in which an omitted second value is treated as duplicating the first value; this draft does not include the contain or cover keywords. |
| css.properties.background-size.auto π | Safari | 10/26/2007 | Firefox | 1/21/2010 | 818 | |
| css.properties.background-size.contain π | Firefox | 1/21/2010 | Safari | 6/7/2010 | 137 | |
| css.properties.background-size.cover π | Firefox | 1/21/2010 | Safari | 6/7/2010 | 137 | |
| css.properties.block-size π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.block-size.fit-content | Safari | 3/25/2019 | Firefox | 11/2/2021 | 953 | |
| css.properties.block-size.max-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.block-size.min-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.border π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-block π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.border-block-color π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.border-block-end π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-block-end-color π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-block-end-style π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-block-end-width π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-block-start π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-block-start-color π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-block-start-style π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-block-start-width π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-block-style π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.border-block-width π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.border-bottom π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-bottom-color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-bottom-left-radius π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox 50.Firefox for Android: Before Firefox for Android 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox for Android 50. |
| css.properties.border-bottom-left-radius.elliptical_corners | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.border-bottom-left-radius.percentages | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 4, the <percentage> was relative to the width of the box even when specifying the radius for a height. This implied that -moz-border-radius-bottomright was always drawing an arc of circle, and never an ellipse, when followed by a single value. |
| css.properties.border-bottom-right-radius π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox 50.Firefox for Android: Before Firefox for Android 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox for Android 50. |
| css.properties.border-bottom-right-radius.elliptical_corners | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.border-bottom-right-radius.percentages | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 4, the <percentage> was relative to the width of the box even when specifying the radius for a height. This implied that -moz-border-radius-bottomright was always drawing an arc of circle, and never an ellipse, when followed by a single value. |
| css.properties.border-bottom-style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 50, border styles of rounded corners (with border-radius) were always rendered as if border-bottom-style was solid. This has been fixed in Firefox 50.Firefox for Android: Before Firefox for Android 50, border styles of rounded corners (with border-radius) were always rendered as if border-bottom-style was solid. This has been fixed in Firefox for Android 50. |
| css.properties.border-bottom-width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-collapse π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.border-collapse.collapse | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.border-collapse.separate | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.border-color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-end-end-radius π | Firefox | 3/19/2019 | Safari | 9/20/2021 | 916 | |
| css.properties.border-end-start-radius π | Firefox | 3/19/2019 | Safari | 9/20/2021 | 916 | |
| css.properties.border-image π | Safari | 7/25/2012 | Firefox | 8/28/2012 | 34 | Chrome: Before Chrome 112, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Chrome Android: Before Chrome Android 112, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Edge: Before Edge 112, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Firefox: Small SVGs are incorrectly stretched, because percentages in border-image-slice are computed to integers instead of floats (bug 1284797).Firefox: Until Firefox 47, SVGs without viewport were not sliced correctly (bug 619500).Firefox: From Firefox 48 until Firefox 49, SVGs without viewport are displayed the same as SVGs with viewport, but if the slices are not exactly 50%, they are incorrectly stretched (bug 1264809).Firefox: Until Firefox 57, an issue persisted for SVGs without viewport when e10s was disabled (bug 1290782).Firefox: Before Firefox 15, an earlier version of the specification was implemented, prefixed.Firefox for Android: Small SVGs are incorrectly stretched, because percentages in border-image-slice are computed to integers instead of floats (bug 1284797).Firefox for Android: Until Firefox for Android 47, SVGs without viewport were not sliced correctly (bug 619500).Firefox for Android: From Firefox for Android 48 until Firefox for Android 49, SVGs without viewport are displayed the same as SVGs with viewport, but if the slices are not exactly 50%, they are incorrectly stretched (bug 1264809).Firefox for Android: Until Firefox for Android 57, an issue persisted for SVGs without viewport when e10s was disabled (bug 1290782).Firefox for Android: Before Firefox for Android 15, an earlier version of the specification was implemented, prefixed.Quest Browser: Before Quest Browser false, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Opera: Before Opera 98, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Opera Android: A border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Samsung Internet: Before Samsung Internet 23.0, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).WebView Android: Before WebView 112, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033). |
| css.properties.border-image.fill | Safari | 7/25/2012 | Firefox | 8/28/2012 | 34 | |
| css.properties.border-image.gradient | Safari | 6/8/2009 | Firefox | 4/29/2014 | 1786 | |
| css.properties.border-image.optional_border_image_slice | Safari | 7/25/2012 | Firefox | 8/28/2012 | 34 | |
| css.properties.border-image-outset π | Safari | 7/25/2012 | Firefox | 8/28/2012 | 34 | |
| css.properties.border-image-repeat π | Safari | 7/25/2012 | Firefox | 8/28/2012 | 34 | |
| css.properties.border-image-repeat.repeat π | Safari | 7/25/2012 | Firefox | 1/7/2020 | 2722 | |
| css.properties.border-image-repeat.round π | Firefox | 8/28/2012 | Safari | 3/21/2016 | 1301 | |
| css.properties.border-image-repeat.space π | Safari | 3/21/2016 | Firefox | 11/15/2016 | 239 | |
| css.properties.border-image-repeat.stretch π | Safari | 7/25/2012 | Firefox | 1/7/2020 | 2722 | |
| css.properties.border-image-slice π | Safari | 7/25/2012 | Firefox | 8/28/2012 | 34 | Firefox: Small SVGs are incorrectly stretched, because percentages in border-image-slice are computed to integers instead of floats (bug 1284797).Firefox: Until Firefox 47, SVGs without viewport were not sliced correctly (bug 619500).Firefox: From Firefox 48 until Firefox 49, SVGs without viewport are displayed the same as SVGs with viewport, but if the slices are not exactly 50%, they are incorrectly stretched (bug 1264809).Firefox: Until Firefox 57, an issue persisted for SVGs without viewport when e10s was disabled (bug 1290782).Firefox for Android: Small SVGs are incorrectly stretched, because percentages in border-image-slice are computed to integers instead of floats (bug 1284797).Firefox for Android: Until Firefox for Android 47, SVGs without viewport were not sliced correctly (bug 619500).Firefox for Android: From Firefox for Android 48 until Firefox for Android 49, SVGs without viewport are displayed the same as SVGs with viewport, but if the slices are not exactly 50%, they are incorrectly stretched (bug 1264809).Firefox for Android: Until Firefox for Android 57, an issue persisted for SVGs without viewport when e10s was disabled (bug 1290782). |
| css.properties.border-image-source π | Safari | 7/25/2012 | Firefox | 8/28/2012 | 34 | |
| css.properties.border-image-width π | Firefox | 6/5/2012 | Safari | 7/25/2012 | 50 | Chrome: Before Chrome 112, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Chrome Android: Before Chrome Android 112, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Edge: Before Edge 112, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Quest Browser: Before Quest Browser false, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Opera: Before Opera 98, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Opera Android: Before Opera Android 75, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).Samsung Internet: Before Samsung Internet 23.0, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033).WebView Android: Before WebView Android 112, a border image's absolute or percentage length width may not take precedence over a narrower border-width (bug 40541033). |
| css.properties.border-image-width.auto π | Safari | 7/25/2012 | Firefox | 8/28/2012 | 34 | |
| css.properties.border-inline π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.border-inline-color π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.border-inline-end π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-inline-end-color π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-inline-end-style π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-inline-end-width π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-inline-start π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-inline-start-color π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-inline-start-style π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-inline-start-width π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.border-inline-style π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.border-inline-width π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.border-left π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-left-color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-left-style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 50, border styles of rounded corners (with border-radius) were always rendered as if border-bottom-style was solid. This has been fixed in Firefox 50.Firefox for Android: Before Firefox 50, border styles of rounded corners (with border-radius) were always rendered as if border-bottom-style was solid. This has been fixed in Firefox 50. |
| css.properties.border-left-width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-radius π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Chrome: Chrome ignores border-radius on <select> elements unless -webkit-appearance is overridden to an appropriate value.Firefox: Before Firefox 50, border styles of rounded corners (with border-radius) were always rendered as if border-style was solid. This has been fixed in Firefox 50.Firefox: To conform to the CSS3 standard, Firefox 4 changes the handling of <percentage> values to match the specification. You can specify an ellipse as a border on an arbitrary sized element with border-radius: 50%;. Firefox 4 also makes rounded corners clip content and images if overflow: visible is not set.Firefox for Android: Before Firefox 50, border styles of rounded corners (with border-radius) were always rendered as if border-style was solid. This has been fixed in Firefox 50.Opera: Before Opera 11.60, replaced elements with border-radius do not have rounded corners.Safari: Safari ignores border-radius on <select> elements unless -webkit-appearance is overridden to an appropriate value.Safari on iOS: Safari ignores border-radius on <select> elements unless -webkit-appearance is overridden to an appropriate value.WebView on iOS: Safari ignores border-radius on <select> elements unless -webkit-appearance is overridden to an appropriate value. |
| css.properties.border-radius.4_values_for_4_corners | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| css.properties.border-radius.elliptical_borders | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | Chrome: Before Chrome 4, the slash / notation is unsupported. If two values are specified, then an elliptical border is drawn on all four corners. -webkit-border-radius: 40px 10px; is equivalent to border-radius: 40px / 10px;.Safari: Before Safari 5, the slash / notation is unsupported. If two values are specified, then an elliptical border is drawn on all four corners. -webkit-border-radius: 40px 10px; is equivalent to border-radius: 40px / 10px;. |
| css.properties.border-radius.percentages | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Firefox: Before Firefox 4, <percentage> values are implemented in a non-standard way. Both horizontal and vertical radii were relative to the width of the border box.Opera: Before Opera 11.5, the implementation of <percentage> values was buggy. |
| css.properties.border-right π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-right-color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-right-style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 50, border styles of rounded corners (with border-radius) were always rendered as if border-bottom-style was solid. This has been fixed in Firefox 50.Firefox for Android: Before Firefox 50, border styles of rounded corners (with border-radius) were always rendered as if border-bottom-style was solid. This has been fixed in Firefox 50. |
| css.properties.border-right-width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-spacing π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-start-end-radius π | Firefox | 3/19/2019 | Safari | 9/20/2021 | 916 | |
| css.properties.border-start-start-radius π | Firefox | 3/19/2019 | Safari | 9/20/2021 | 916 | |
| css.properties.border-style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox 50.Firefox for Android: Before Firefox for Android 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox for Android 50. |
| css.properties.border-style.dashed π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-style.dotted π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-style.double π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-style.groove π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-style.hidden π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-style.inset π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-style.none π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-style.outset π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-style.ridge π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-style.solid π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-top π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-top-color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-top-left-radius π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox 50.Firefox for Android: Before Firefox for Android 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox for Android 50. |
| css.properties.border-top-left-radius.elliptical_corners | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.border-top-left-radius.percentages | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 4, the <percentage> was relative to the width of the box even when specifying the radius for a height. This implied that -moz-border-radius-bottomright was always drawing an arc of circle, and never an ellipse, when followed by a single value. |
| css.properties.border-top-right-radius π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox 50.Firefox for Android: Before Firefox for Android 50, border styles of rounded corners were always rendered as if border-style was solid. This has been fixed in Firefox for Android 50. |
| css.properties.border-top-right-radius.elliptical_corners | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.border-top-right-radius.percentages | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Firefox: Before Firefox 4, the <percentage> was relative to the width of the box even when specifying the radius for a height. This implied that -moz-border-radius-bottomright was always drawing an arc of circle, and never an ellipse, when followed by a single value. |
| css.properties.border-top-style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 50, border styles of rounded corners (with border-radius) were always rendered as if border-top-style was solid. This has been fixed in Firefox 50.Firefox for Android: Before Firefox for Android 50, border styles of rounded corners (with border-radius) were always rendered as if border-top-style was solid. This has been fixed in Firefox for Android 50. |
| css.properties.border-top-width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.border-width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.bottom π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: In Internet Explorer versions before 7, when both top and bottom are specified, the element position is overconstrained and the top property has precedence; the computed value of bottom is set to -top, while its specified value is ignored. |
| css.properties.bottom.auto π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.box-align | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.box-decoration-break π | Safari | 10/22/2013 | Firefox | 9/2/2014 | 315 | Chrome: This property is only supported for inline elements.Chrome Android: This property is only supported for inline elements.Edge: This property is only supported for inline elements.Quest Browser: This property is only supported for inline elements.Safari: This property is only supported for inline elements.Safari on iOS: This property is only supported for inline elements.Samsung Internet: This property is only supported for inline elements.WebView Android: This property is only supported for inline elements.WebView on iOS: This property is only supported for inline elements. |
| css.properties.box-decoration-break.clone π | Safari | 10/22/2013 | Firefox | 9/2/2014 | 315 | Chrome: This value was only supported with the -webkit- prefix.Chrome Android: This value was only supported with the -webkit- prefix.Edge: This value was only supported with the -webkit- prefix.Quest Browser: This value was only supported with the -webkit- prefix.Opera: This value was only supported with the -webkit- prefix.Opera Android: This value was only supported with the -webkit- prefix.Samsung Internet: This value was only supported with the -webkit- prefix.WebView Android: This value was only supported with the -webkit- prefix. |
| css.properties.box-decoration-break.slice π | Safari | 10/22/2013 | Firefox | 9/2/2014 | 315 | Chrome: This value was only supported with the -webkit- prefix.Chrome Android: This value was only supported with the -webkit- prefix.Edge: This value was only supported with the -webkit- prefix.Quest Browser: This value was only supported with the -webkit- prefix.Opera: This value was only supported with the -webkit- prefix.Opera Android: This value was only supported with the -webkit- prefix.Samsung Internet: This value was only supported with the -webkit- prefix.WebView Android: This value was only supported with the -webkit- prefix. |
| css.properties.box-direction | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.box-flex | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.box-ordinal-group | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.box-orient | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.box-pack | Safari | 10/26/2007 | Firefox | 9/20/2016 | 3252 | |
| css.properties.box-shadow π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Chrome: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.Chrome Android: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.Firefox: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.Firefox for Android: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.Internet Explorer: To use box-shadow in Internet Explorer 9 or later, you must set border-collapse to separate.Internet Explorer: Since version 5.5, Internet Explorer supports Microsoft's DropShadow and Shadow Filter. You can use this proprietary extension to cast a drop shadow (though the syntax and the effect are different from CSS3)Quest Browser: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.Opera: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.Opera Android: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.Safari: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.Safari on iOS: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.Samsung Internet: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.WebView Android: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar.WebView on iOS: Shadows affect layout in this browser. For example, if you cast an outer shadow to a box with a width of 100%, then you'll see a scrollbar. |
| css.properties.box-shadow.inset | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | Internet Explorer: inset must be the last keyword in the declaration. |
| css.properties.box-shadow.multiple_shadows | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.box-shadow.spread_radius | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| css.properties.box-sizing π | Safari | 7/20/2011 | Firefox | 4/29/2014 | 1014 | Chrome: box-sizing is not respected when the height is calculated from window.getComputedStyle().Chrome Android: box-sizing is not respected when the height is calculated from window.getComputedStyle().Firefox: Before Firefox 23, box-sizing is not respected when the height is calculated from window.getComputedStyle().Firefox for Android: Before Firefox for Android 23, box-sizing is not respected when the height is calculated from window.getComputedStyle().Internet Explorer: box-sizing is not respected when the height is calculated from window.getComputedStyle().Quest Browser: box-sizing is not respected when the height is calculated from window.getComputedStyle().Opera Android: box-sizing is not respected when the height is calculated from window.getComputedStyle().Samsung Internet: box-sizing is not respected when the height is calculated from window.getComputedStyle().WebView Android: box-sizing is not respected when the height is calculated from window.getComputedStyle(). |
| css.properties.box-sizing.border-box π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.box-sizing.content-box π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.break-after π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| css.properties.break-after.auto | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-after.avoid | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-after.left | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-after.page | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-after.paged_context π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| css.properties.break-after.paged_context.page | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| css.properties.break-after.right | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-before π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| css.properties.break-before.auto | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-before.avoid | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-before.left | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-before.page | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-before.paged_context π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| css.properties.break-before.paged_context.page | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| css.properties.break-before.right | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-inside π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| css.properties.break-inside.auto | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-inside.avoid | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.break-inside.avoid-column | Safari | 3/24/2020 | Firefox | 9/7/2021 | 532 | |
| css.properties.break-inside.avoid-page | Safari | 3/24/2020 | Firefox | 9/7/2021 | 532 | |
| css.properties.break-inside.multicol_context π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| css.properties.break-inside.multicol_context.avoid-column | Safari | 9/20/2016 | Firefox | 9/7/2021 | 1813 | |
| css.properties.break-inside.paged_context π | Safari | 9/20/2016 | Firefox | 1/29/2019 | 861 | |
| css.properties.caption-side π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.caption-side.bottom | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.caption-side.top | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.caret-color π | Firefox | 4/19/2017 | Safari | 4/12/2018 | 358 | |
| css.properties.clear π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.clear.both π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.clear.inline-end π | Firefox | 8/8/2017 | Safari | 9/20/2021 | 1504 | |
| css.properties.clear.inline-start π | Firefox | 8/8/2017 | Safari | 9/20/2021 | 1504 | |
| css.properties.clear.left π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.clear.right π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.clip π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: Before Internet Explorer 7, Internet Explorer incorrectly interprets clip: auto as clip: rect(auto, auto, auto, auto).Safari: Safari incorrectly interprets clip: auto as clip: rect(auto, auto, auto, auto).Safari on iOS: Safari on iOS incorrectly interprets clip: auto as clip: rect(auto, auto, auto, auto).WebView on iOS: WebView on iOS incorrectly interprets clip: auto as clip: rect(auto, auto, auto, auto). |
| css.properties.clip.auto | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.clip-path π | Firefox | 6/30/2009 | Safari | 3/21/2016 | 2456 | Edge: Only supports clip paths defined by url().Internet Explorer: Only supports clip paths defined by url(). |
| css.properties.clip-path.basic_shape π | Safari | 10/22/2013 | Firefox | 6/13/2017 | 1330 | |
| css.properties.clip-path.fill-box π | Firefox | 1/24/2017 | Safari | 3/24/2020 | 1155 | Firefox: This value was supported before Firefox 51, but as an alias to border-box.Firefox for Android: This value was supported before Firefox for Android 51, but as an alias to border-box. |
| css.properties.clip-path.html_elements | Firefox | 6/30/2009 | Safari | 10/22/2013 | 1575 | |
| css.properties.clip-path.path | Firefox | 12/10/2019 | Safari | 3/24/2020 | 105 | |
| css.properties.clip-path.stroke-box π | Firefox | 1/24/2017 | Safari | 3/24/2020 | 1155 | Firefox: This value was supported before Firefox 51, but as an alias to border-box.Firefox for Android: This value was supported before Firefox for Android 51, but as an alias to border-box. |
| css.properties.clip-path.svg_elements | Safari | 10/22/2013 | Firefox | 3/7/2017 | 1232 | |
| css.properties.clip-path.view-box π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.clip-rule π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| css.properties.clip-rule.evenodd π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| css.properties.clip-rule.nonzero π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| css.properties.color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.color-adjust π | Firefox | 1/7/2020 | Safari | 3/14/2022 | 797 | |
| css.properties.color-interpolation π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | Chrome: Only the default value of sRGB is implementedChrome Android: Only the default value of sRGB is implementedEdge: Only the default value of sRGB is implementedQuest Browser: Only the default value of sRGB is implementedOpera: Only the default value of sRGB is implementedOpera Android: Only the default value of sRGB is implementedSafari: Only the default value of sRGB is implementedSafari on iOS: Only the default value of sRGB is implementedSamsung Internet: Only the default value of sRGB is implementedWebView Android: Only the default value of sRGB is implementedWebView on iOS: Only the default value of sRGB is implemented |
| css.properties.color-interpolation.sRGB | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.color-interpolation-filters π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| css.properties.color-interpolation-filters.auto π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | |
| css.properties.color-interpolation-filters.linearRGB π | Firefox | 6/25/2013 | Safari | 9/30/2015 | 827 | |
| css.properties.color-interpolation-filters.sRGB π | Firefox | 6/25/2013 | Safari | 9/30/2015 | 827 | |
| css.properties.color-scheme π | Safari | 9/19/2019 | Firefox | 1/11/2022 | 845 | |
| css.properties.color-scheme.dark | Safari | 9/19/2019 | Firefox | 1/11/2022 | 845 | |
| css.properties.color-scheme.light | Safari | 9/19/2019 | Firefox | 1/11/2022 | 845 | |
| css.properties.color-scheme.normal | Safari | 9/19/2019 | Firefox | 1/11/2022 | 845 | |
| css.properties.color-scheme.only_dark | Safari | 9/19/2019 | Firefox | 1/11/2022 | 845 | |
| css.properties.color-scheme.only_light | Safari | 9/19/2019 | Firefox | 1/11/2022 | 845 | |
| css.properties.column-count π | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | Firefox: Before version 37, multiple columns didn't work with display: table-caption elements.Firefox for Android: Before version 37, multiple columns didn't work with display: table-caption elements. |
| css.properties.column-count.auto π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| css.properties.column-fill π | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | |
| css.properties.column-fill.auto π | Firefox | 11/20/2012 | Safari | 10/16/2014 | 695 | |
| css.properties.column-fill.balance π | Firefox | 11/20/2012 | Safari | 10/16/2014 | 695 | |
| css.properties.column-gap π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| css.properties.column-gap.flex_context π | Firefox | 10/23/2018 | Safari | 4/26/2021 | 916 | |
| css.properties.column-gap.grid_context π | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | |
| css.properties.column-gap.multicol_context π | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | Firefox: Before Firefox 3, the default value for the normal keyword was 0 and not 1em. |
| css.properties.column-gap.multicol_context.calc_values | Firefox | 6/26/2018 | Safari | 3/25/2019 | 272 | |
| css.properties.column-gap.multicol_context.percentage_values | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | |
| css.properties.column-rule π | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | Firefox: Before Firefox 3, the default value for the normal keyword was 0 and not 1em. |
| css.properties.column-rule-color π | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | |
| css.properties.column-rule-style π | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | |
| css.properties.column-rule-width π | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | |
| css.properties.column-span π | Safari | 9/30/2015 | Firefox | 12/10/2019 | 1532 | |
| css.properties.column-span.all π | Safari | 7/20/2011 | Firefox | 12/10/2019 | 3065 | |
| css.properties.column-span.none π | Safari | 7/20/2011 | Firefox | 12/10/2019 | 3065 | |
| css.properties.column-width π | Safari | 9/30/2015 | Firefox | 11/15/2016 | 412 | Firefox: Before version 37, multiple columns didn't work with display: table-caption elements.Firefox for Android: Before version 37, multiple columns didn't work with display: table-caption elements. |
| css.properties.column-width.auto | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| css.properties.columns π | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | Firefox: Before version 37, multiple columns didn't work with display: table-caption elements.Firefox for Android: Before version 37, multiple columns didn't work with display: table-caption elements. |
| css.properties.contain π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| css.properties.contain.content π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| css.properties.contain.inline-size π | Firefox | 5/31/2022 | Safari | 9/12/2022 | 104 | |
| css.properties.contain.layout π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| css.properties.contain.none π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| css.properties.contain.paint π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| css.properties.contain.size π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| css.properties.contain.strict π | Firefox | 9/3/2019 | Safari | 3/14/2022 | 923 | |
| css.properties.contain.style π | Safari | 3/14/2022 | Firefox | 7/26/2022 | 134 | Chrome: Before Chrome 115, style containment did not affect quotes, see bug 40592922.Chrome Android: Before Chrome Android 115, style containment did not affect quotes, see bug 40592922.Edge: Before Edge 115, style containment did not affect quotes, see bug 40592922.Quest Browser: Before Quest Browser false, style containment did not affect quotes, see bug 40592922.Opera: Before Opera 101, style containment did not affect quotes, see bug 40592922.Opera Android: Before Opera Android 77, style containment did not affect quotes, see bug 40592922.Safari: Style containment does not affect quotes, see bug 232083.Safari on iOS: Style containment does not affect quotes, see bug 232083.Samsung Internet: Before Samsung Internet 23.0, style containment did not affect quotes, see bug 40592922.WebView Android: Before WebView Android 115, style containment did not affect quotes, see bug 40592922.WebView on iOS: Style containment does not affect quotes, see bug 232083. |
| css.properties.contain-intrinsic-block-size π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.contain-intrinsic-block-size.none π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.contain-intrinsic-height π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.contain-intrinsic-height.none π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.contain-intrinsic-inline-size π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.contain-intrinsic-inline-size.none π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.contain-intrinsic-size π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.contain-intrinsic-size.auto_none | Firefox | 8/29/2023 | Safari | 9/18/2023 | 20 | |
| css.properties.contain-intrinsic-size.none π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.contain-intrinsic-width π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.contain-intrinsic-width.none π | Firefox | 11/15/2022 | Safari | 9/18/2023 | 307 | |
| css.properties.container π | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| css.properties.container-name π | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| css.properties.container-name.none π | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| css.properties.container-type π | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| css.properties.container-type.inline-size π | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| css.properties.container-type.normal π | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| css.properties.container-type.size π | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| css.properties.content π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.content.alt_text | Safari | 3/5/2024 | Firefox | 7/9/2024 | 126 | |
| css.properties.content.element_replacement | Safari | 9/30/2015 | Firefox | 10/23/2018 | 1119 | |
| css.properties.content.gradient π | Safari | 10/22/2013 | Firefox | 5/9/2023 | 3486 | Firefox: content: <gradient> doesn't paint on ::before/::after pseudo elements. See bug 1832901.Firefox for Android: content: <gradient> doesn't paint on ::before/::after pseudo elements. See bug 1832901. |
| css.properties.content.image-set π | Firefox | 6/1/2021 | Safari | 9/18/2023 | 839 | Chrome: Support for url images only and x is the only supported resolution unit.Chrome Android: Support for url images only and x is the only supported resolution unit.Edge: Support for url images only and x is the only supported resolution unit.Firefox: The type() function is not supported as an argument to image-set().Firefox for Android: The type() function is not supported as an argument to image-set().Quest Browser: Support for url images only and x is the only supported resolution unit.Opera: Support for url images only and x is the only supported resolution unit.Opera Android: Support for url images only and x is the only supported resolution unit.Safari: The type() function is not supported as an argument to image-set().Safari: The type() function is not supported as an argument to image-set().Safari: Support for url images only and x is the only supported resolution unit.Safari: Support for url images only and x is the only supported resolution unit.Safari on iOS: The type() function is not supported as an argument to image-set().Safari on iOS: The type() function is not supported as an argument to image-set().Safari on iOS: Support for url images only and x is the only supported resolution unit.Safari on iOS: Support for url images only and x is the only supported resolution unit.Samsung Internet: Support for url images only and x is the only supported resolution unit.WebView Android: Support for url images only and x is the only supported resolution unit.WebView on iOS: The type() function is not supported as an argument to image-set().WebView on iOS: The type() function is not supported as an argument to image-set().WebView on iOS: Support for url images only and x is the only supported resolution unit.WebView on iOS: Support for url images only and x is the only supported resolution unit. |
| css.properties.content.none π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.content.normal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.content.url π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.content-visibility π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| css.properties.content-visibility.auto π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | Safari: Skipped content is not findable via find-in-page.Safari on iOS: Skipped content is not findable via find-in-page.WebView on iOS: Skipped content is not findable via find-in-page. |
| css.properties.content-visibility.hidden π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| css.properties.content-visibility.visible π | Firefox | 4/16/2024 | Safari | 9/16/2024 | 153 | |
| css.properties.counter-increment π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.counter-increment.list-item π | Firefox | 11/9/2004 | Safari | 9/30/2015 | 3977 | |
| css.properties.counter-increment.none π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.counter-reset π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.counter-reset.list-item π | Firefox | 11/9/2004 | Safari | 9/30/2015 | 3977 | Chrome: Overriding the initial value of the implicit list-item counter has no effect when the default marker string for list items (::marker) is generated; see bug 338233131.Chrome Android: Overriding the initial value of the implicit list-item counter has no effect when the default marker string for list items (::marker) is generated; see bug 338233131.Quest Browser: Overriding the initial value of the implicit list-item counter has no effect when the default marker string for list items (::marker) is generated; see bug 338233131.Opera: Overriding the initial value of the implicit list-item counter has no effect when the default marker string for list items (::marker) is generated; see bug 338233131.Opera Android: Overriding the initial value of the implicit list-item counter has no effect when the default marker string for list items (::marker) is generated; see bug 338233131.Safari: Overriding the initial value of the implicit list-item counter results in incorrect values for the counter() function used to generate content, as it is not fully implemented; see bug 260436.Safari on iOS: Overriding the initial value of the implicit list-item counter results in incorrect values for the counter() function used to generate content, as it is not fully implemented; see bug 260436.Samsung Internet: Overriding the initial value of the implicit list-item counter has no effect when the default marker string for list items (::marker) is generated; see bug 338233131.WebView Android: Overriding the initial value of the implicit list-item counter has no effect when the default marker string for list items (::marker) is generated; see bug 338233131.WebView on iOS: Overriding the initial value of the implicit list-item counter results in incorrect values for the counter() function used to generate content, as it is not fully implemented; see bug 260436. |
| css.properties.counter-reset.none π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.counter-set π | Firefox | 7/9/2019 | Safari | 12/11/2023 | 1616 | |
| css.properties.counter-set.list-item π | Firefox | 7/9/2019 | Safari | 12/11/2023 | 1616 | |
| css.properties.counter-set.none π | Firefox | 7/9/2019 | Safari | 12/11/2023 | 1616 | |
| css.properties.cursor π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Firefox: Starting in Firefox 67, the maximum size allowed for custom cursors is 32x32 pixels due to cursors being misused by certain malicious sites.Internet Explorer: In Internet Explorer 11, when cursor is applied to an element and this element is underneath an open <select> menu and the user hovers over a <select> menu item that's on top of said element, the cursor for said element will be displayed rather than the <select>'s normal cursor. See bug 817822.Safari on iOS: This property is only supported on iPads with an external pointing device.Safari on iOS: Unsupported values use the default pointer as a fallback.WebView on iOS: This property is only supported on iPads with an external pointing device.WebView on iOS: Unsupported values use the default pointer as a fallback. |
| css.properties.cursor.alias π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.all-scroll π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.auto π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.cursor.cell π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| css.properties.cursor.col-resize π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.context-menu π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Chrome: This cursor is only supported on macOS and Linux.Chrome Android: This cursor is only supported on macOS and Linux.Firefox: This cursor is only supported on macOS and Linux.Quest Browser: This cursor is only supported on macOS and Linux.Opera Android: This cursor is only supported on macOS and Linux.Safari on iOS: If this value is used, the iPad will display the default pointer instead.Samsung Internet: This cursor is only supported on macOS and Linux.WebView Android: This cursor is only supported on macOS and Linux.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.copy π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.crosshair π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.default π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.e-resize π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.ew-resize π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.grab | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | Chrome: Chrome also continues to support the prefixed versions.Chrome: Chrome 22 added Windows support.Chrome Android: Chrome Android also continues to support the prefixed versions.Chrome Android: Chrome Android 25 added Windows support.Quest Browser: Quest Browser also continues to support the prefixed versions.Quest Browser: Quest Browser 5.0 added Windows support.Opera: Opera also continues to support the prefixed versions.Opera: Opera 22 added Windows support.Opera Android: Opera also continues to support the prefixed versions.Opera Android: Opera 22 added Windows support.Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView Android: WebView Android also continues to support the prefixed versions.WebView Android: WebView Android 4.4 added Windows support.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.grabbing π | Firefox | 2/4/2014 | Safari | 9/19/2017 | 1323 | Chrome: Chrome 22 added Windows support.Chrome Android: Chrome Android 25 added Windows support.Edge: Edge 79 added Windows support.Quest Browser: Quest Browser 5.0 added Windows support.Opera: Opera 15 added Windows support.Opera Android: Opera Android 14 added Windows support.Safari on iOS: If this value is used, the iPad will display the default pointer instead.Samsung Internet: Samsung Internet 1.5 added Windows support.WebView Android: WebView Android 4.4 added Windows support.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.help π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.move π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.n-resize π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.ne-resize π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.nesw-resize π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.no-drop π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.none π | Firefox | 6/17/2008 | Safari | 6/7/2010 | 720 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.not-allowed π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.ns-resize π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.nw-resize π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.nwse-resize π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.pointer π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.progress π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.row-resize π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.s-resize π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.se-resize π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.sw-resize π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.text π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.cursor.url | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Firefox: Firefox 4 added macOS support. |
| css.properties.cursor.url_positioning_syntax | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Firefox: Firefox 4 added macOS support.Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.vertical-text π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.w-resize π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.wait π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.zoom-in π | Firefox | 9/17/2013 | Safari | 9/30/2015 | 743 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.cursor.zoom-out π | Firefox | 9/17/2013 | Safari | 9/30/2015 | 743 | Safari on iOS: If this value is used, the iPad will display the default pointer instead.WebView on iOS: If this value is used, the iPad will display the default pointer instead. |
| css.properties.custom-property π | Firefox | 7/22/2014 | Safari | 3/21/2016 | 608 | |
| css.properties.custom-property.env π | Safari | 4/12/2018 | Firefox | 1/29/2019 | 292 | |
| css.properties.custom-property.env.safe-area-inset-bottom π | Safari | 9/19/2017 | Firefox | 1/29/2019 | 497 | |
| css.properties.custom-property.env.safe-area-inset-left π | Safari | 9/19/2017 | Firefox | 1/29/2019 | 497 | |
| css.properties.custom-property.env.safe-area-inset-right π | Safari | 9/19/2017 | Firefox | 1/29/2019 | 497 | |
| css.properties.custom-property.env.safe-area-inset-top π | Safari | 9/19/2017 | Firefox | 1/29/2019 | 497 | |
| css.properties.custom-property.var π | Firefox | 7/22/2014 | Safari | 3/21/2016 | 608 | |
| css.properties.cx π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.cy π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.direction π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.direction.ltr π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.direction.rtl π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.direction.vertical_slider_direction | Safari | 5/18/2023 | Firefox | 11/21/2023 | 187 | Firefox: Only supported for vertical range sliders.Firefox for Android: Only supported for vertical range sliders.Safari: Only supported for vertical range sliders.Safari on iOS: Only supported for vertical range sliders.WebView on iOS: Only supported for vertical range sliders. |
| css.properties.display π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.block π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.contents π | Firefox | 3/31/2015 | Safari | 4/12/2018 | 1108 | |
| css.properties.display.flex | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | Firefox: Firefox 28 added multi-line flexbox support.Firefox for Android: Firefox for Android 28 added multi-line flexbox support.Internet Explorer: IE incorrectly positions inline block content inside flex containers. See the discussion on Microsoft Answers.Internet Explorer: IE incorrectly positions inline block content inside flex containers. See the discussion on Microsoft Answers. |
| css.properties.display.flow-root | Firefox | 4/19/2017 | Safari | 9/19/2019 | 883 | |
| css.properties.display.grid | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | Internet Explorer: Internet Explorer implements an older version of the specification.Samsung Internet: Samsung Internet added this earlier than the corresponding Chrome version would indicate. |
| css.properties.display.inline π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.inline-block | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: Until Internet Explorer 8, inline-block is only for natural inline elements. |
| css.properties.display.inline-flex | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | Firefox: Firefox 28 added multi-line flexbox support.Firefox for Android: Firefox for Android 28 added multi-line flexbox support. |
| css.properties.display.inline-grid | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | Internet Explorer: Internet Explorer implements an older version of the specification.Samsung Internet: Samsung Internet added this earlier than the corresponding Chrome version would indicate. |
| css.properties.display.inline-table | Safari | 6/23/2003 | Firefox | 6/17/2008 | 1821 | |
| css.properties.display.list-item π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.multi-keyword_values | Firefox | 10/22/2019 | Safari | 9/20/2021 | 699 | |
| css.properties.display.none π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Chrome 65 stopped creating layout objects for elements inside an <iframe> with display:none applied.Chrome Android: Chrome Android 65 stopped creating layout objects for elements inside an <iframe> with display:none applied.Quest Browser: Quest Browser 5.0 stopped creating layout objects for elements inside an <iframe> with display:none applied.Opera: Opera 52 stopped creating layout objects for elements inside an <iframe> with display:none applied.Opera Android: Opera Android 47 stopped creating layout objects for elements inside an <iframe> with display:none applied.Samsung Internet: Chrome 65 stopped creating layout objects for elements inside an <iframe> with display:none applied.WebView Android: WebView Android 65 stopped creating layout objects for elements inside an <iframe> with display:none applied. |
| css.properties.display.table | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.table-caption | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.display.table-cell | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.table-column | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.table-column-group | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.table-footer-group | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.table-header-group | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.table-row | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.display.table-row-group | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.dominant-baseline π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.dominant-baseline.alphabetic π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.dominant-baseline.auto π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.dominant-baseline.central π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.dominant-baseline.hanging π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.dominant-baseline.ideographic π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.dominant-baseline.mathematical π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.dominant-baseline.middle π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.empty-cells π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.fill π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.fill-opacity π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.fill-rule π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.fill-rule.evenodd π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.fill-rule.nonzero π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.filter π | Firefox | 1/13/2015 | Safari | 3/21/2016 | 433 | Chrome: In Chrome 18 to 19, the saturate() function only takes integers instead of decimal or percentage values. From Chrome 20, this bug is fixed.Internet Explorer: Internet Explorer 4 to 9 implemented a non-standard filter property. The syntax was completely different from this one and is not documented here. |
| css.properties.flex π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | Firefox: Since Firefox 28, multi-line flexbox is supported.Firefox: Before Firefox 32, Firefox wasn't able to animate values starting or stopping at 0.Firefox: Until Firefox 61, flex items that are sized according to their content are sized using fit-content, not max-content.Firefox for Android: Since Firefox for Android 28, multi-line flexbox is supported.Firefox for Android: Before Firefox for Android 32, Firefox for Android wasn't able to animate values starting or stopping at 0.Firefox for Android: Until Firefox for Android 61, flex items that are sized according to their content are sized using fit-content, not max-content.Internet Explorer: Internet Explorer 11 ignores uses of calc() in the flex-basis part of the flex syntax. This can be worked around by using the longhand properties instead of the shorthand. See Flexbug #8 for more info.Internet Explorer: Internet Explorer 11 considers a unitless value in the flex-basis part to be syntactically invalid (and will thus be ignored). A workaround is to always include a unit in the flex-basis part of the flex shorthand value. See Flexbug #4 for more info.Internet Explorer: Internet Explorer 10 and 11 ignore uses of calc() in the flex-basis part of the flex syntax. This can be worked around by using the longhand properties instead of the shorthand. See Flexbug #8 for more info.Internet Explorer: Internet Explorer 10 and 11 consider a unitless value in the flex-basis part to be syntactically invalid (and will thus be ignored). A workaround is to always include a unit in the flex-basis part of the flex shorthand value. See Flexbug #4 for more info. |
| css.properties.flex.none π | Safari | 10/22/2013 | Firefox | 1/7/2020 | 2268 | |
| css.properties.flex-basis π | Firefox | 6/25/2013 | Safari | 9/30/2015 | 827 | Firefox: Since Firefox 28, multi-line flexbox is supported.Firefox for Android: Since Firefox for Android 28, multi-line flexbox is supported.Internet Explorer: When a non- auto flex-basis is specified, Internet Explorer 10 and 11 always uses a content-box box model to calculate the size of a flex item, even if box-sizing: border-box is applied to the element. See Flexbug #7 for more info. |
| css.properties.flex-basis.auto | Firefox | 6/25/2013 | Safari | 9/30/2015 | 827 | |
| css.properties.flex-basis.content | Firefox | 6/26/2018 | Safari | 3/14/2022 | 1357 | |
| css.properties.flex-basis.fit-content | Firefox | 11/2/2021 | Safari | 9/12/2022 | 314 | |
| css.properties.flex-basis.max-content | Firefox | 3/19/2019 | Safari | 9/12/2022 | 1273 | |
| css.properties.flex-basis.min-content | Firefox | 3/19/2019 | Safari | 9/12/2022 | 1273 | |
| css.properties.flex-direction π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | Firefox: Since Firefox 28, multi-line flexbox is supported.Firefox for Android: Since Firefox for Android 28, multi-line flexbox is supported. |
| css.properties.flex-direction.column π | Safari | 10/22/2013 | Firefox | 1/7/2020 | 2268 | |
| css.properties.flex-direction.column-reverse π | Safari | 10/22/2013 | Firefox | 9/22/2020 | 2527 | Firefox: Before Firefox 81, overflow with column-reverse was unsupported. See bug 1042151.Firefox for Android: Before Firefox for Android 81, overflow with column-reverse was unsupported. See bug 1042151. |
| css.properties.flex-direction.row π | Safari | 10/22/2013 | Firefox | 1/7/2020 | 2268 | |
| css.properties.flex-direction.row-reverse π | Safari | 10/22/2013 | Firefox | 9/22/2020 | 2527 | Firefox: Before Firefox 81, overflow with column-reverse was unsupported. See bug 1042151.Firefox for Android: Before Firefox for Android 81, overflow with column-reverse was unsupported. See bug 1042151. |
| css.properties.flex-flow π | Firefox | 3/18/2014 | Safari | 9/30/2015 | 561 | |
| css.properties.flex-grow π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | Firefox: Since Firefox 28, multi-line flexbox is supported.Firefox for Android: Since Firefox for Android 28, multi-line flexbox is supported. |
| css.properties.flex-shrink π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | Firefox: Since Firefox 28, multi-line flexbox is supported.Firefox: Before Firefox 32, Firefox wasn't able to animate values starting or stopping at 0.Firefox for Android: Since Firefox for Android 28, multi-line flexbox is supported.Firefox for Android: Before Firefox for Android 32, Firefox for Android wasn't able to animate values starting or stopping at 0.Internet Explorer: Internet Explorer 10 uses 0 instead of 1 as the initial value for the flex-shrink property. A workaround is to always set an explicit value for flex-shrink. See Flexbug #6 for more info. |
| css.properties.flex-wrap π | Firefox | 3/18/2014 | Safari | 9/30/2015 | 561 | Internet Explorer: Partial support due to large number of bugs present. See Flexbugs. |
| css.properties.flex-wrap.nowrap π | Safari | 10/22/2013 | Firefox | 3/18/2014 | 147 | |
| css.properties.flex-wrap.wrap π | Safari | 10/22/2013 | Firefox | 3/18/2014 | 147 | |
| css.properties.flex-wrap.wrap-reverse π | Safari | 10/22/2013 | Firefox | 3/18/2014 | 147 | |
| css.properties.float π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.float.inline-end π | Firefox | 8/8/2017 | Safari | 9/20/2021 | 1504 | |
| css.properties.float.inline-start π | Firefox | 8/8/2017 | Safari | 9/20/2021 | 1504 | |
| css.properties.float.left π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.float.none π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.float.right π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.flood-color π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| css.properties.flood-opacity π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| css.properties.font π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font.caption | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font.font_stretch_support | Firefox | 12/15/2015 | Safari | 9/19/2017 | 644 | |
| css.properties.font.icon | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font.menu | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font.message-box | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font.small-caption | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font.status-bar | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-family π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Not supported on option elements. See bug 1536148. |
| css.properties.font-family.system-ui | Safari | 9/19/2017 | Firefox | 9/7/2021 | 1449 | Firefox: Supported on macOS only. |
| css.properties.font-feature-settings π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | Firefox: The ISO/IEC CD 14496-22 3rd edition suggests using the ssty feature to provide glyph variants more suitable for use in scripts (for example primes used as superscripts). Starting with Firefox 29, this is done automatically by the MathML rendering engine. The ISO/IEC CD 14496-22 3rd edition also suggests applying the dtls feature to letters when placing mathematical accents to get dotless forms (for example dotless i, j with a hat). Starting with Firefox 35, this is done automatically by the MathML rendering engine. You can override the default values determined by the MathML rendering engine with CSS.Firefox: From Firefox 129 the -webkit-font-feature-settings alias has been added to support sites that are still supporting the vendor prefix.Firefox: From Firefox 4 to Firefox 14 (inclusive), Firefox supported an older, slightly different syntax. See OpenType Font Feature support in Firefox 4.Firefox for Android: The ISO/IEC CD 14496-22 3rd edition suggests using the ssty feature to provide glyph variants more suitable for use in scripts (for example primes used as superscripts). Starting with Firefox for Android 29, this is done automatically by the MathML rendering engine. The ISO/IEC CD 14496-22 3rd edition also suggests applying the dtls feature to letters when placing mathematical accents to get dotless forms (for example dotless i, j with a hat). Starting with Firefox for Android 35, this is done automatically by the MathML rendering engine. You can override the default values determined by the MathML rendering engine with CSS.Firefox for Android: From Firefox for Android 129 the -webkit-font-feature-settings alias has been added to support sites that are still supporting the vendor prefix.Firefox for Android: From Firefox for Android 4 to Firefox for Android 14 (inclusive), Firefox for Android supported an older, slightly different syntax. See OpenType Font Feature support in Firefox for Android 4. |
| css.properties.font-feature-settings.normal π | Firefox | 8/28/2012 | Safari | 3/21/2016 | 1301 | |
| css.properties.font-kerning π | Firefox | 9/2/2014 | Safari | 9/30/2015 | 393 | |
| css.properties.font-optical-sizing π | Firefox | 9/5/2018 | Safari | 3/24/2020 | 566 | |
| css.properties.font-optical-sizing.auto π | Firefox | 9/5/2018 | Safari | 3/24/2020 | 566 | |
| css.properties.font-optical-sizing.none π | Firefox | 9/5/2018 | Safari | 3/24/2020 | 566 | |
| css.properties.font-palette π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| css.properties.font-palette.dark π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| css.properties.font-palette.light π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| css.properties.font-palette.normal π | Safari | 3/14/2022 | Firefox | 11/15/2022 | 246 | |
| css.properties.font-size π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-size.rem_values | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | Firefox: Before Firefox 57, animations using em units are not affected by changes to the font-size of the animated element's parent (bug 1254424).Firefox: Before Firefox 57, some language settings' inherited font-size is smaller than expected (bug 1391341). |
| css.properties.font-size.xxx-large | Firefox | 10/22/2019 | Safari | 3/27/2023 | 1252 | |
| css.properties.font-size-adjust π | Firefox | 6/17/2008 | Safari | 3/27/2023 | 5396 | Firefox: Before Firefox 40, font-size-adjust: 0 was incorrectly interpreted as font-size-adjust: none (bug 1144885).Firefox: Only supported on Windows.Firefox for Android: Before Firefox for Android 40, font-size-adjust: 0 was incorrectly interpreted as font-size-adjust: none (bug 1144885). |
| css.properties.font-size-adjust.from-font π | Safari | 9/18/2023 | Firefox | 9/26/2023 | 8 | |
| css.properties.font-size-adjust.none π | Firefox | 6/17/2008 | Safari | 3/27/2023 | 5396 | |
| css.properties.font-size-adjust.two-values | Firefox | 9/7/2021 | Safari | 9/18/2023 | 741 | |
| css.properties.font-smooth | Safari | 6/8/2009 | Firefox | 10/29/2013 | 1604 | Firefox: Only works on macOS. |
| css.properties.font-stretch π | Firefox | 12/20/2011 | Safari | 9/19/2017 | 2100 | Chrome: A font-stretch definition must be added to the @font-face before this property will function.Chrome Android: A font-stretch definition must be added to the @font-face before this property will function.Quest Browser: A font-stretch definition must be added to the @font-face before this property will function.Opera: A font-stretch definition must be added to the @font-face before this property will function.Opera Android: A font-stretch definition must be added to the @font-face before this property will function.Samsung Internet: A font-stretch definition must be added to the @font-face before this property will function.WebView Android: A font-stretch definition must be added to the @font-face before this property will function. |
| css.properties.font-stretch.percentage | Safari | 4/12/2018 | Firefox | 6/26/2018 | 75 | |
| css.properties.font-style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 44, oblique was not distinguished from italic.Firefox for Android: Before Firefox for Android 44, oblique was not distinguished from italic. |
| css.properties.font-style.italic π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-style.normal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-style.oblique-angle π | Safari | 4/12/2018 | Firefox | 6/26/2018 | 75 | |
| css.properties.font-synthesis π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| css.properties.font-synthesis.small-caps | Safari | 3/27/2017 | Firefox | 10/5/2021 | 1653 | |
| css.properties.font-synthesis.style | Safari | 3/27/2017 | Firefox | 1/7/2020 | 1016 | |
| css.properties.font-synthesis.weight | Safari | 3/27/2017 | Firefox | 1/7/2020 | 1016 | |
| css.properties.font-synthesis-small-caps π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| css.properties.font-synthesis-small-caps.auto π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| css.properties.font-synthesis-small-caps.none π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| css.properties.font-synthesis-style π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| css.properties.font-synthesis-style.auto π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| css.properties.font-synthesis-style.none π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| css.properties.font-synthesis-weight π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| css.properties.font-synthesis-weight.auto π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| css.properties.font-synthesis-weight.none π | Firefox | 3/14/2023 | Safari | 3/27/2023 | 13 | |
| css.properties.font-variant π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: Only supports the small-caps and normal keywords. |
| css.properties.font-variant.css_fonts_shorthand | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant.historical-forms π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant.none π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| css.properties.font-variant.normal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-variant.sub π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant.super π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant.turkic_is | Firefox | 7/17/2012 | Safari | 10/16/2014 | 821 | |
| css.properties.font-variant-alternates π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-alternates.annotation π | Firefox | 12/1/2014 | Safari | 12/13/2022 | 2934 | |
| css.properties.font-variant-alternates.character_variant π | Firefox | 12/1/2014 | Safari | 12/13/2022 | 2934 | |
| css.properties.font-variant-alternates.historical-forms π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.font-variant-alternates.normal π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.font-variant-alternates.ornaments π | Firefox | 12/1/2014 | Safari | 12/13/2022 | 2934 | |
| css.properties.font-variant-alternates.styleset π | Firefox | 12/1/2014 | Safari | 12/13/2022 | 2934 | |
| css.properties.font-variant-alternates.stylistic π | Firefox | 12/1/2014 | Safari | 12/13/2022 | 2934 | |
| css.properties.font-variant-alternates.swash π | Firefox | 12/1/2014 | Safari | 12/13/2022 | 2934 | |
| css.properties.font-variant-caps π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-caps.all-petite-caps π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-caps.all-small-caps π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-caps.normal π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-caps.petite-caps π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-caps.small-caps π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-caps.titling-caps π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-caps.unicase π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.full-width π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.jis04 π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.jis78 π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.jis83 π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.jis90 π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.normal π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.proportional-width π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.ruby π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.simplified π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-east-asian.traditional π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-emoji π | Firefox | 12/13/2022 | Safari | 5/13/2024 | 517 | |
| css.properties.font-variant-ligatures π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-ligatures.common-ligatures π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-ligatures.contextual π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-ligatures.discretionary-ligatures π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-ligatures.historical-ligatures π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-ligatures.no-common-ligatures π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-ligatures.no-contextual π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-ligatures.no-discretionary-ligatures π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-ligatures.no-historical-ligatures π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-ligatures.none π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-ligatures.normal π | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | |
| css.properties.font-variant-numeric π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-numeric.diagonal-fractions π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-numeric.lining-nums π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-numeric.normal π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-numeric.oldstyle-nums π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-numeric.ordinal π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-numeric.proportional-nums π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-numeric.slashed-zero π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-numeric.stacked-fractions π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-numeric.tabular-nums π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| css.properties.font-variant-position π | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | Chrome: The property is recognized, but has no effect.Chrome Android: The property is recognized, but has no effect.Edge: The property is recognized, but has no effect.Quest Browser: The property is recognized, but has no effect.Opera: The property is recognized, but has no effect.Opera Android: The property is recognized, but has no effect.Samsung Internet: The property is recognized, but has no effect.WebView Android: The property is recognized, but has no effect. |
| css.properties.font-variant-position.normal π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | Chrome: The property is recognized, but has no effect.Chrome Android: The property is recognized, but has no effect.Edge: The property is recognized, but has no effect.Quest Browser: The property is recognized, but has no effect.Opera: The property is recognized, but has no effect.Opera Android: The property is recognized, but has no effect.Samsung Internet: The property is recognized, but has no effect.WebView Android: The property is recognized, but has no effect. |
| css.properties.font-variant-position.sub π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | Chrome: The property is recognized, but has no effect.Chrome Android: The property is recognized, but has no effect.Edge: The property is recognized, but has no effect.Quest Browser: The property is recognized, but has no effect.Opera: The property is recognized, but has no effect.Opera Android: The property is recognized, but has no effect.Samsung Internet: The property is recognized, but has no effect.WebView Android: The property is recognized, but has no effect. |
| css.properties.font-variant-position.super π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | Chrome: The property is recognized, but has no effect.Chrome Android: The property is recognized, but has no effect.Edge: The property is recognized, but has no effect.Quest Browser: The property is recognized, but has no effect.Opera: The property is recognized, but has no effect.Opera Android: The property is recognized, but has no effect.Samsung Internet: The property is recognized, but has no effect.WebView Android: The property is recognized, but has no effect. |
| css.properties.font-variation-settings π | Safari | 9/19/2017 | Firefox | 9/5/2018 | 351 | Safari: Requires macOS 10.13 High Sierra or later.Safari on iOS: Requires iOS 11 or later.WebView on iOS: Requires iOS 11 or later. |
| css.properties.font-weight π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-weight.bold π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-weight.bolder π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-weight.lighter π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-weight.normal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.font-weight.number | Safari | 9/19/2017 | Firefox | 6/26/2018 | 280 | |
| css.properties.gap π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.gap.flex_context π | Firefox | 10/23/2018 | Safari | 4/26/2021 | 916 | |
| css.properties.gap.grid_context π | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | |
| css.properties.gap.grid_context.calc_values | Firefox | 3/7/2017 | Safari | 3/25/2019 | 748 | |
| css.properties.gap.grid_context.percentage_values | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| css.properties.gap.multicol_context π | Firefox | 6/26/2018 | Safari | 4/26/2021 | 1035 | |
| css.properties.grid π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | Samsung Internet: This was added early so is out of sync with the equivalent Chromium version. |
| css.properties.grid-area π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-auto-columns π | Safari | 3/27/2017 | Firefox | 10/22/2019 | 939 | Firefox: Does not accept multiple track-size values. See bug 1339672.Firefox for Android: Does not accept multiple track-size values. See bug 1339672. |
| css.properties.grid-auto-flow π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-auto-flow.column π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-auto-flow.dense π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-auto-flow.row π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-auto-rows π | Safari | 3/27/2017 | Firefox | 10/22/2019 | 939 | Firefox: Does not accept multiple track-size values. See bug 1339672.Firefox for Android: Does not accept multiple track-size values. See bug 1339672. |
| css.properties.grid-column π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-column-end π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-column-start π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-row π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-row-end π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-row-start π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template.none π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-areas π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-areas.none π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-columns π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-columns.animation | Firefox | 3/19/2019 | Safari | 9/12/2022 | 1273 | |
| css.properties.grid-template-columns.auto π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-columns.fit-content π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-columns.max-content π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-columns.min-content π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-columns.minmax π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-columns.none π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-columns.repeat π | Safari | 3/27/2017 | Firefox | 5/5/2020 | 1135 | Firefox: repeat(auto-fill, ...) and repeat(auto-fit, ...) only support one repeated column (see bug 1341507).Firefox: calc() doesn't work in repeat() (see bug 1350069).Firefox for Android: repeat(auto-fill, ...) and repeat(auto-fit, ...) only support one repeated column (see bug 1341507).Firefox for Android: calc() doesn't work in repeat() (see bug 1350069). |
| css.properties.grid-template-columns.subgrid π | Firefox | 12/10/2019 | Safari | 9/12/2022 | 1007 | |
| css.properties.grid-template-rows π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-rows.animation | Firefox | 3/19/2019 | Safari | 9/12/2022 | 1273 | |
| css.properties.grid-template-rows.auto π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-rows.fit-content π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-rows.max-content π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-rows.min-content π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-rows.minmax π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-rows.none π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.grid-template-rows.repeat π | Safari | 3/27/2017 | Firefox | 5/5/2020 | 1135 | Firefox: repeat(auto-fill, ...) and repeat(auto-fit, ...) only support one repeated column (see bug 1341507).Firefox: calc() doesn't work in repeat() (see bug 1350069).Firefox for Android: repeat(auto-fill, ...) and repeat(auto-fit, ...) only support one repeated column (see bug 1341507).Firefox for Android: calc() doesn't work in repeat() (see bug 1350069). |
| css.properties.grid-template-rows.subgrid π | Firefox | 12/10/2019 | Safari | 9/12/2022 | 1007 | |
| css.properties.height π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.height.auto π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.height.fit-content π | Safari | 9/19/2017 | Firefox | 11/2/2021 | 1505 | |
| css.properties.height.max-content π | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.height.min-content π | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.hyphenate-character π | Firefox | 3/8/2022 | Safari | 9/18/2023 | 559 | |
| css.properties.hyphenate-character.auto π | Safari | 7/20/2011 | Firefox | 3/8/2022 | 3884 | |
| css.properties.hyphens π | Firefox | 12/15/2015 | Safari | 9/18/2023 | 2834 | Edge: Only works if the specified language is the same as the language of the underlying OS.Internet Explorer: Only works if the specified language is the same as the language of the underlying OS. |
| css.properties.hyphens.auto | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | Chrome: Only supported on macOS.Edge: Only supported on macOS.Opera: Only supported on macOS. |
| css.properties.hyphens.language_catalan | Safari | 7/20/2011 | Firefox | 11/8/2011 | 111 | |
| css.properties.hyphens.language_croatian | Firefox | 11/8/2011 | Safari | 3/21/2016 | 1595 | |
| css.properties.hyphens.language_czech | Safari | 3/21/2016 | Firefox | 9/3/2024 | 3088 | |
| css.properties.hyphens.language_danish | Safari | 7/20/2011 | Firefox | 11/8/2011 | 111 | |
| css.properties.hyphens.language_dutch | Safari | 7/20/2011 | Firefox | 11/8/2011 | 111 | |
| css.properties.hyphens.language_english | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | Firefox: For English, Firefox uses an en-US dictionaryFirefox for Android: For English, Firefox for Android uses an en-US dictionarySafari: For English, Safari uses different en-GB and en-US dictionaries.Safari on iOS: For English, Safari on iOS uses different en-GB and en-US dictionaries.WebView on iOS: For English, WebView on iOS uses different en-GB and en-US dictionaries. |
| css.properties.hyphens.language_finnish | Firefox | 11/8/2011 | Safari | 3/21/2016 | 1595 | |
| css.properties.hyphens.language_french | Safari | 7/20/2011 | Firefox | 11/8/2011 | 111 | |
| css.properties.hyphens.language_german_reformed_orthography | Safari | 7/20/2011 | Firefox | 11/8/2011 | 111 | |
| css.properties.hyphens.language_hungarian | Firefox | 12/20/2011 | Safari | 3/21/2016 | 1553 | |
| css.properties.hyphens.language_italian | Safari | 7/20/2011 | Firefox | 12/20/2011 | 153 | |
| css.properties.hyphens.language_norwegian_no | Safari | 7/20/2011 | Firefox | 11/8/2011 | 111 | |
| css.properties.hyphens.language_polish | Firefox | 7/22/2014 | Safari | 3/21/2016 | 608 | |
| css.properties.hyphens.language_portuguese | Firefox | 11/8/2011 | Safari | 3/21/2016 | 1595 | |
| css.properties.hyphens.language_russian | Safari | 7/20/2011 | Firefox | 11/8/2011 | 111 | |
| css.properties.hyphens.language_spanish | Safari | 7/20/2011 | Firefox | 11/8/2011 | 111 | |
| css.properties.hyphens.language_swedish | Safari | 7/20/2011 | Firefox | 11/8/2011 | 111 | |
| css.properties.hyphens.language_turkish | Safari | 7/20/2011 | Firefox | 12/20/2011 | 153 | |
| css.properties.hyphens.language_ukrainian | Firefox | 12/20/2011 | Safari | 3/21/2016 | 1553 | |
| css.properties.image-orientation π | Firefox | 12/10/2013 | Safari | 3/24/2020 | 2296 | |
| css.properties.image-orientation.from-image π | Firefox | 12/10/2013 | Safari | 3/24/2020 | 2296 | |
| css.properties.image-orientation.none π | Firefox | 12/10/2013 | Safari | 3/24/2020 | 2296 | |
| css.properties.image-rendering π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| css.properties.image-rendering.auto π | Firefox | 1/21/2010 | Safari | 7/25/2012 | 916 | |
| css.properties.image-rendering.crisp-edges π | Safari | 10/22/2013 | Firefox | 1/29/2019 | 1925 | |
| css.properties.image-rendering.optimizeQuality | Firefox | 1/21/2010 | Safari | 10/22/2013 | 1370 | |
| css.properties.image-rendering.optimizeSpeed | Firefox | 1/21/2010 | Safari | 10/22/2013 | 1370 | |
| css.properties.image-rendering.pixelated π | Safari | 9/20/2016 | Firefox | 10/5/2021 | 1841 | |
| css.properties.inline-size π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.inline-size.fit-content | Safari | 3/25/2019 | Firefox | 11/2/2021 | 953 | |
| css.properties.inline-size.max-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.inline-size.min-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.inset π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.inset.auto π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.inset-block π | Firefox | 10/23/2018 | Safari | 4/26/2021 | 916 | |
| css.properties.inset-block.auto π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.inset-block-end π | Firefox | 10/23/2018 | Safari | 4/26/2021 | 916 | |
| css.properties.inset-block-end.auto π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.inset-block-start π | Firefox | 10/23/2018 | Safari | 4/26/2021 | 916 | |
| css.properties.inset-block-start.auto π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.inset-inline π | Firefox | 10/23/2018 | Safari | 4/26/2021 | 916 | |
| css.properties.inset-inline.auto π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.inset-inline-end π | Firefox | 10/23/2018 | Safari | 4/26/2021 | 916 | |
| css.properties.inset-inline-end.auto π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.inset-inline-start π | Firefox | 10/23/2018 | Safari | 4/26/2021 | 916 | |
| css.properties.inset-inline-start.auto π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.isolation π | Safari | 10/16/2014 | Firefox | 2/24/2015 | 131 | |
| css.properties.justify-content π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | |
| css.properties.justify-content.flex_context π | Firefox | 4/2/2013 | Safari | 10/22/2013 | 203 | Chrome: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome implements the new behavior beginning with Chrome 52.Chrome Android: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Chrome Android implements the new behavior beginning with Chrome Android 52.Firefox: Before Firefox 27, Firefox supported only single-line flexbox.Firefox for Android: Before Firefox for Android 27, Firefox for Android supported only single-line flexbox.Samsung Internet: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. Samsung Internet implements the new behavior beginning with Samsung Internet 6.0.WebView Android: Older versions of the specification treat absolute positioned children as though they are a 0 by 0 flex item. Later specification versions take the children out of the flow and set their positions based on align and justify properties. WebView Android implements the new behavior beginning with WebView Android 52. |
| css.properties.justify-content.flex_context.left_right | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | Internet Explorer: This value is recognized, but has no effect.Opera Android: This value is recognized, but has no effect. |
| css.properties.justify-content.flex_context.safe_unsafe | Firefox | 10/23/2018 | Safari | 7/29/2024 | 2106 | Chrome: Before version 115, this value is recognized, but has no effect.Chrome Android: Before version 115, this value is recognized, but has no effect.Edge: Before version 115, this value is recognized, but has no effect.Opera: Before version 101, this value is recognized, but has no effect.Opera Android: Before version 77, this value is recognized, but has no effect.Samsung Internet: Before version 23.0, this value is recognized, but has no effect.WebView Android: Before version 115, this value is recognized, but has no effect. |
| css.properties.justify-content.flex_context.space-evenly | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| css.properties.justify-content.flex_context.start_end | Firefox | 3/8/2016 | Safari | 3/14/2022 | 2197 | |
| css.properties.justify-content.flex_context.stretch | Safari | 9/30/2015 | Firefox | 3/7/2017 | 524 | |
| css.properties.justify-content.grid_context π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.justify-items π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | |
| css.properties.justify-items.flex_context π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | |
| css.properties.justify-items.grid_context π | Firefox | 3/8/2016 | Safari | 3/27/2017 | 384 | |
| css.properties.justify-self π | Firefox | 3/8/2016 | Safari | 3/27/2017 | 384 | |
| css.properties.justify-self.grid_context π | Firefox | 3/8/2016 | Safari | 3/27/2017 | 384 | Internet Explorer: Internet Explorer 10 and 11 have the property -ms-grid-column-align, which acts in a similar way to justify-self. |
| css.properties.left π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.left.auto π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.letter-spacing π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.letter-spacing.normal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.letter-spacing.svg_elements | Safari | 7/20/2011 | Firefox | 1/7/2020 | 3093 | |
| css.properties.lighting-color π | Firefox | 6/17/2008 | Safari | 7/25/2012 | 1499 | |
| css.properties.line-break π | Safari | 9/19/2017 | Firefox | 9/3/2019 | 714 | |
| css.properties.line-break.anywhere π | Firefox | 9/3/2019 | Safari | 9/19/2019 | 16 | |
| css.properties.line-break.auto π | Safari | 10/22/2013 | Firefox | 9/3/2019 | 2142 | |
| css.properties.line-break.loose π | Safari | 10/16/2014 | Firefox | 9/3/2019 | 1783 | |
| css.properties.line-break.normal π | Safari | 4/29/2005 | Firefox | 9/3/2019 | 5240 | |
| css.properties.line-break.strict π | Safari | 10/16/2014 | Firefox | 9/3/2019 | 1783 | |
| css.properties.line-clamp π | Firefox | 7/9/2019 | Safari | 12/11/2024 | 1982 | |
| css.properties.line-clamp.none | Firefox | 7/9/2019 | Safari | 12/11/2024 | 1982 | |
| css.properties.line-height π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.line-height.normal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-image π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 86, this property did not accept an <image> type, and required the URL of an image.Firefox for Android: Before Firefox for Android 86, this property did not accept an <image> type, and required the URL of an image. |
| css.properties.list-style-image.none π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-position π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Safari: In Safari, if a block element is the first child of a list element declared as list-style-position: inside, then the marker box is placed on the same line as the block element.Safari on iOS: In Safari on iOS, if a block element is the first child of a list element declared as list-style-position: inside, then the marker box is placed on the same line as the block element.WebView on iOS: In WebView on iOS, if a block element is the first child of a list element declared as list-style-position: inside, then the marker box is placed on the same line as the block element. |
| css.properties.list-style-position.inside π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-position.outside π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.arabic-indic π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.armenian π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.bengali π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.cambodian π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.circle π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.cjk-decimal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.cjk-earthly-branch π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.cjk-heavenly-stem π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.cjk-ideographic π | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | Opera: Until version 15, only decimal numbers display.Opera Android: Until version 15, only decimal numbers display. |
| css.properties.list-style-type.decimal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.decimal-leading-zero π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.devanagari π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.disc π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.disclosure-closed π | Firefox | 10/14/2014 | Safari | 9/20/2021 | 2533 | |
| css.properties.list-style-type.disclosure-open π | Firefox | 10/14/2014 | Safari | 9/20/2021 | 2533 | |
| css.properties.list-style-type.ethiopic-halehame | Firefox | 11/9/2004 | Safari | 9/18/2023 | 6887 | |
| css.properties.list-style-type.ethiopic-halehame-am | Firefox | 11/9/2004 | Safari | 9/18/2023 | 6887 | |
| css.properties.list-style-type.ethiopic-halehame-ti-er | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | |
| css.properties.list-style-type.ethiopic-halehame-ti-et | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | |
| css.properties.list-style-type.ethiopic-numeric π | Firefox | 10/14/2014 | Safari | 9/20/2021 | 2533 | Firefox: Before Firefox 38, Firefox added a dot as suffix of the number for ethiopic-numeric (for example, α«. instead of α«). The specification later defined the absence of a suffix, which Firefox 38 followed.Firefox for Android: Before Firefox for Android 38, Firefox for Android added a dot as suffix of the number for ethiopic-numeric (for example, α«. instead of α«). The specification later defined the absence of a suffix, which Firefox for Android 38 followed. |
| css.properties.list-style-type.georgian π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.gujarati π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.gurmukhi π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.hangul | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | |
| css.properties.list-style-type.hangul-consonant | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | |
| css.properties.list-style-type.hebrew π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.hiragana π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.hiragana-iroha π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.japanese-formal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.japanese-informal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.kannada π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.katakana π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.katakana-iroha π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.khmer π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.korean-hangul-formal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.korean-hanja-formal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.korean-hanja-informal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.lao π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.lower-alpha π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.lower-armenian π | Safari | 7/20/2011 | Firefox | 10/14/2014 | 1182 | |
| css.properties.list-style-type.lower-greek π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.lower-latin π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.lower-roman π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.malayalam π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.mongolian π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.myanmar π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.none π | Safari | 6/23/2003 | Firefox | 1/7/2020 | 6042 | |
| css.properties.list-style-type.oriya π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.persian π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.simp-chinese-formal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.simp-chinese-informal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.square π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.string | Firefox | 7/2/2015 | Safari | 4/26/2021 | 2125 | |
| css.properties.list-style-type.tamil π | Firefox | 10/14/2014 | Safari | 9/20/2021 | 2533 | |
| css.properties.list-style-type.telugu π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.thai π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.tibetan π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.list-style-type.trad-chinese-formal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.trad-chinese-informal π | Firefox | 3/18/2014 | Safari | 9/20/2021 | 2743 | |
| css.properties.list-style-type.upper-alpha π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.upper-armenian π | Safari | 7/20/2011 | Firefox | 10/14/2014 | 1182 | |
| css.properties.list-style-type.upper-latin π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.upper-roman π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.list-style-type.urdu | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | |
| css.properties.margin π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.margin.auto | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: The auto value is not supported in quirks mode.Internet Explorer: The auto value is not supported in quirks mode. |
| css.properties.margin-block π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.margin-block-end π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.margin-block-start π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.margin-bottom π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.margin-bottom.auto | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: The auto value is not supported in quirks mode.Internet Explorer: The auto value is not supported in quirks mode. |
| css.properties.margin-inline π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.margin-inline-end π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.margin-inline-start π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.margin-left π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.margin-left.auto | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: The auto value is not supported in quirks mode.Internet Explorer: The auto value is not supported in quirks mode. |
| css.properties.margin-right π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.margin-right.auto | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: The auto value is not supported in quirks mode.Internet Explorer: The auto value is not supported in quirks mode. |
| css.properties.margin-top π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.margin-top.auto | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: The auto value is not supported in quirks mode.Internet Explorer: The auto value is not supported in quirks mode. |
| css.properties.marker π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.marker-end π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.marker-mid π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.marker-start π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.mask π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | Chrome: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.Chrome: While the property is recognized, values applied to it don't have any effect.Chrome Android: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.Chrome Android: While the property is recognized, values applied to it don't have any effect.Edge: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.Edge: While the property is recognized, values applied to it don't have any effect.Firefox: Only supports mask: url(file.svg#mask_id) or mask: url(#mask_id), where the URL is a reference to an SVG <mask> element.Firefox for Android: Only supports mask: url(file.svg#mask_id) or mask: url(#mask_id), where the URL is a reference to an SVG <mask> element.Quest Browser: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.Quest Browser: While the property is recognized, values applied to it don't have any effect.Opera: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.Opera: While the property is recognized, values applied to it don't have any effect.Opera Android: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.Opera Android: While the property is recognized, values applied to it don't have any effect.Safari: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.Safari: While the property is recognized, values applied to it don't have any effect.Safari on iOS: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.Safari on iOS: While the property is recognized, values applied to it don't have any effect.Samsung Internet: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.Samsung Internet: While the property is recognized, values applied to it don't have any effect.WebView Android: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.WebView Android: While the property is recognized, values applied to it don't have any effect.WebView on iOS: The prefixed property can be used with SVG and HTML with a slightly different syntax, which allows setting the non-standard -webkit-mask-attachment property.WebView on iOS: While the property is recognized, values applied to it don't have any effect. |
| css.properties.mask-clip π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-composite π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | Chrome: See also -webkit-mask-composite for a similar non-standard property that uses different keywords.Chrome Android: See also -webkit-mask-composite for a similar non-standard property that uses different keywords.Edge: See also -webkit-mask-composite for a similar non-standard property that uses different keywords.Opera: See also -webkit-mask-composite for a similar non-standard property that uses different keywords.Opera Android: See also -webkit-mask-composite for a similar non-standard property that uses different keywords.Safari: See also -webkit-mask-composite for a similar non-standard property that uses different keywords.Safari on iOS: See also -webkit-mask-composite for a similar non-standard property that uses different keywords.Samsung Internet: See also -webkit-mask-composite for a similar non-standard property that uses different keywords.WebView Android: See also -webkit-mask-composite for a similar non-standard property that uses different keywords.WebView on iOS: See also -webkit-mask-composite for a similar non-standard property that uses different keywords. |
| css.properties.mask-composite.add π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-composite.exclude π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-composite.intersect π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-composite.subtract π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-image π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | Chrome: From version 8, Chrome added support for gradient values. Initially, Chrome supported only -webkit- prefixed values for gradients (such as -webkit-linear-gradient()). Later, support for unprefixed values was added.Chrome Android: From version 18, Chrome Android added support for gradient values. Initially, Chrome Android supported only -webkit- prefixed values for gradients (such as -webkit-linear-gradient()). Later, support for unprefixed values was added.Quest Browser: From version 5.0, Quest Browser added support for gradient values. Initially, Quest Browser supported only -webkit- prefixed values for gradients (such as -webkit-linear-gradient()). Later, support for unprefixed values was added.Safari: Initially, Safari supported only -webkit- prefixed values for gradients (such as -webkit-linear-gradient()). Later, support for unprefixed values was added.Safari on iOS: Initially, Safari on iOS supported only -webkit- prefixed values for gradients (such as -webkit-linear-gradient()). Later, support for unprefixed values was added.WebView Android: Initially, Android supported only -webkit- prefixed values for gradients (such as -webkit-linear-gradient()). Later, support for unprefixed values was added.WebView on iOS: Initially, WebView on iOS supported only -webkit- prefixed values for gradients (such as -webkit-linear-gradient()). Later, support for unprefixed values was added. |
| css.properties.mask-image.multiple_mask_images | Safari | 6/8/2009 | Firefox | 4/19/2017 | 2872 | |
| css.properties.mask-image.svg_masks | Safari | 6/8/2009 | Firefox | 4/19/2017 | 2872 | |
| css.properties.mask-mode π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-mode.alpha π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-mode.luminance π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-mode.match-source π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-origin π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-position π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-repeat π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-size π | Firefox | 4/19/2017 | Safari | 3/14/2022 | 1790 | |
| css.properties.mask-type π | Safari | 10/22/2013 | Firefox | 1/13/2015 | 448 | |
| css.properties.mask-type.alpha π | Safari | 10/22/2013 | Firefox | 1/13/2015 | 448 | |
| css.properties.mask-type.luminance π | Safari | 10/22/2013 | Firefox | 1/13/2015 | 448 | |
| css.properties.math-style π | Safari | 4/26/2021 | Firefox | 8/29/2023 | 855 | |
| css.properties.max-block-size π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.max-block-size.fit-content | Safari | 3/25/2019 | Firefox | 11/2/2021 | 953 | |
| css.properties.max-block-size.max-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.max-block-size.min-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.max-height π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.properties.max-height.fit-content π | Safari | 9/19/2017 | Firefox | 11/2/2021 | 1505 | Firefox: Firefox implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing.Firefox for Android: Firefox for Android implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing. |
| css.properties.max-height.max-content π | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.max-height.min-content π | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.max-height.none π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.properties.max-inline-size π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.max-inline-size.fit-content | Safari | 3/25/2019 | Firefox | 11/2/2021 | 953 | |
| css.properties.max-inline-size.max-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.max-inline-size.min-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.max-width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: CSS 2.1 leaves the behavior of max-width with table undefined. Firefox supports applying max-width to table elements.Firefox for Android: CSS 2.1 leaves the behavior of max-width with table undefined. Firefox for Android supports applying max-width to table elements.Opera: CSS 2.1 leaves the behavior of max-width with table undefined. Opera supports applying max-width to table elements. |
| css.properties.max-width.fit-content π | Safari | 9/19/2017 | Firefox | 11/2/2021 | 1505 | Firefox: Firefox implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing.Firefox for Android: Firefox for Android implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing. |
| css.properties.max-width.max-content π | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.max-width.min-content π | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.max-width.none π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.min-block-size π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.min-block-size.fit-content | Safari | 3/25/2019 | Firefox | 11/2/2021 | 953 | |
| css.properties.min-block-size.max-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.min-block-size.min-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.min-height π | Safari | 4/15/2005 | Firefox | 6/17/2008 | 1159 | Firefox: CSS 2.1 leaves the behavior of min-height with table undefined. Firefox supports applying min-height to table elements.Firefox for Android: CSS 2.1 leaves the behavior of min-height with table undefined. Firefox for Android supports applying min-height to table elements.Internet Explorer: In Internet Explorer 10 and 11, a min-height declaration on a column-direction flex container doesn't apply to the container's flex items. See Flexbug #3 for more info.Opera: CSS 2.1 leaves the behavior of min-height with table undefined. Opera supports applying min-height to table elements. |
| css.properties.min-height.auto | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Firefox: Firefox 18 and later used auto as the initial value for min-height.Firefox for Android: Firefox for Android 18 and later used auto as the initial value for min-height. |
| css.properties.min-height.fit-content | Safari | 9/19/2017 | Firefox | 11/2/2021 | 1505 | Firefox: Firefox implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing.Firefox for Android: Firefox for Android implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing. |
| css.properties.min-height.max-content | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.min-height.min-content | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.min-inline-size π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.min-inline-size.fit-content | Safari | 3/25/2019 | Firefox | 11/2/2021 | 953 | |
| css.properties.min-inline-size.max-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.min-inline-size.min-content | Firefox | 3/19/2019 | Safari | 3/25/2019 | 6 | |
| css.properties.min-width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: CSS 2.1 leaves the behavior of min-width with table undefined. Firefox supports applying min-width to table elements.Firefox for Android: CSS 2.1 leaves the behavior of min-width with table undefined. Firefox for Android supports applying min-width to table elements.Opera: CSS 2.1 leaves the behavior of min-width with table undefined. Opera supports applying min-width to table elements. |
| css.properties.min-width.auto | Safari | 10/22/2013 | Firefox | 12/1/2014 | 405 | Chrome: Chrome uses auto as the initial value for min-width.Chrome Android: Chrome Android uses auto as the initial value for min-width.Edge: Edge uses auto as the initial value for min-width.Firefox: Firefox 18 and later (until the value was removed), used auto as the initial value for min-width.Firefox for Android: Firefox for Android 18 and later (until the value was removed), used auto as the initial value for min-width.Quest Browser: Quest Browser uses auto as the initial value for min-width.Opera: Opera uses auto as the initial value for min-width.Opera Android: Opera Android uses auto as the initial value for min-width.Samsung Internet: Samsung Internet uses auto as the initial value for min-width.WebView Android: WebView Android uses auto as the initial value for min-width. |
| css.properties.min-width.fit-content | Safari | 9/19/2017 | Firefox | 11/2/2021 | 1505 | Firefox: Firefox implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing.Firefox for Android: Firefox for Android implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing. |
| css.properties.min-width.max-content | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.min-width.min-content | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.mix-blend-mode π | Firefox | 9/2/2014 | Safari | 10/16/2014 | 44 | |
| css.properties.mix-blend-mode.plus-lighter π | Safari | 3/21/2016 | Firefox | 4/5/2022 | 2206 | |
| css.properties.object-fit π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | Edge: Only supported for <img> elements. |
| css.properties.object-fit.contain π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | |
| css.properties.object-fit.cover π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | |
| css.properties.object-fit.fill π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | |
| css.properties.object-fit.none π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | |
| css.properties.object-fit.scale-down π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | |
| css.properties.object-position π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | Edge: Only supported for <img> elements. |
| css.properties.offset π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-anchor π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-anchor.auto π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-anchor.bottom π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-anchor.center π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-anchor.left π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-anchor.right π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-anchor.top π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-distance π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-path π | Firefox | 1/7/2020 | Safari | 3/14/2022 | 797 | Samsung Internet: path() is the only value type supported. |
| css.properties.offset-path.basic_shape π | Firefox | 1/23/2024 | Safari | 9/16/2024 | 237 | |
| css.properties.offset-path.border-box π | Firefox | 1/23/2024 | Safari | 9/16/2024 | 237 | |
| css.properties.offset-path.content-box π | Firefox | 1/23/2024 | Safari | 9/16/2024 | 237 | |
| css.properties.offset-path.fill-box π | Firefox | 1/23/2024 | Safari | 9/16/2024 | 237 | |
| css.properties.offset-path.none π | Firefox | 1/7/2020 | Safari | 9/16/2024 | 1714 | |
| css.properties.offset-path.padding-box π | Firefox | 1/23/2024 | Safari | 9/16/2024 | 237 | |
| css.properties.offset-path.path | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-path.ray π | Safari | 9/12/2022 | Firefox | 1/23/2024 | 498 | |
| css.properties.offset-path.stroke-box π | Firefox | 1/23/2024 | Safari | 9/16/2024 | 237 | |
| css.properties.offset-path.url π | Safari | 9/18/2023 | Firefox | 1/23/2024 | 127 | |
| css.properties.offset-path.view-box π | Firefox | 1/23/2024 | Safari | 9/16/2024 | 237 | |
| css.properties.offset-position π | Safari | 9/12/2022 | Firefox | 1/23/2024 | 498 | |
| css.properties.offset-position.auto π | Safari | 9/12/2022 | Firefox | 1/23/2024 | 498 | |
| css.properties.offset-position.bottom π | Safari | 9/12/2022 | Firefox | 1/23/2024 | 498 | |
| css.properties.offset-position.center π | Safari | 9/12/2022 | Firefox | 1/23/2024 | 498 | |
| css.properties.offset-position.left π | Safari | 9/12/2022 | Firefox | 1/23/2024 | 498 | |
| css.properties.offset-position.normal π | Safari | 12/11/2023 | Firefox | 1/23/2024 | 43 | |
| css.properties.offset-position.right π | Safari | 9/12/2022 | Firefox | 1/23/2024 | 498 | |
| css.properties.offset-position.top π | Safari | 9/12/2022 | Firefox | 1/23/2024 | 498 | |
| css.properties.offset-rotate π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-rotate.auto π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.offset-rotate.reverse π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.properties.opacity π | Firefox | 11/9/2004 | Safari | 4/29/2005 | 171 | |
| css.properties.opacity.percentages | Firefox | 10/22/2019 | Safari | 3/24/2020 | 154 | |
| css.properties.order π | Firefox | 4/2/2013 | Safari | 9/30/2015 | 911 | Firefox: Since Firefox 28, multi-line flexbox is supported.Firefox for Android: Since Firefox for Android 28, multi-line flexbox is supported. |
| css.properties.outline π | Firefox | 4/19/2021 | Safari | 3/27/2023 | 707 | Chrome: Before Chrome 94, outline does not follow the shape of border-radius.Chrome Android: Before Chrome Android 94, outline does not follow the shape of border-radius.Edge: Before Edge 94, outline does not follow the shape of border-radius.Firefox: Before Firefox 88, outline does not follow the shape of border-radius.Firefox for Android: Before Firefox for Android 88, outline does not follow the shape of border-radius.Quest Browser: Before Quest Browser 18.0, outline does not follow the shape of border-radius.Opera: Before Opera 80, outline does not follow the shape of border-radius.Safari: Before Safari 16.4, outline does not follow the shape of border-radius. See bug 20807.Safari on iOS: Before Safari on iOS 16.4, outline does not follow the shape of border-radius. See bug 20807.WebView Android: Before Chrome 94, outline does not follow the shape of border-radius.WebView on iOS: Before WebView on iOS 16.4, outline does not follow the shape of border-radius. See bug 20807. |
| css.properties.outline-color π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | |
| css.properties.outline-offset π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | Firefox: Before Firefox 88, an outline does not follow the shape of border-radius.Firefox for Android: Before Firefox for Android 88, an outline does not follow the shape of border-radius. |
| css.properties.outline-style π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | Firefox: Before Firefox 88, an outline does not follow the shape of border-radius.Firefox for Android: Before Firefox for Android 88, an outline does not follow the shape of border-radius. |
| css.properties.outline-style.auto π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | |
| css.properties.outline-style.dashed π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.outline-style.dotted π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.outline-style.double π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.outline-style.groove π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.outline-style.inset π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.outline-style.none π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.outline-style.outset π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.outline-style.ridge π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.outline-style.solid π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.outline-width π | Safari | 2/2/2004 | Firefox | 11/29/2005 | 666 | Firefox: Before Firefox 88, an outline does not follow the shape of border-radius.Firefox for Android: Before Firefox for Android 88, an outline does not follow the shape of border-radius. |
| css.properties.overflow π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: After Firefox 3.6, the overflow property is correctly applied to table group elements (<thead>, <tbody>, <tfoot>).Internet Explorer: From version 4 to 6, Internet Explorer enlarges an element with overflow: visible (default value) to fit the content inside it. height and width behave like min-height and min-width, respectively. |
| css.properties.overflow.auto π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.overflow.clip π | Firefox | 9/22/2020 | Safari | 9/12/2022 | 720 | |
| css.properties.overflow.hidden π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.overflow.multiple_keywords | Firefox | 6/26/2018 | Safari | 3/24/2020 | 637 | |
| css.properties.overflow.scroll π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.overflow.visible π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.properties.overflow-wrap π | Safari | 10/22/2013 | Firefox | 9/20/2016 | 1064 | |
| css.properties.overflow-wrap.anywhere π | Firefox | 1/29/2019 | Safari | 3/14/2022 | 1140 | |
| css.properties.overflow-wrap.break-word π | Safari | 6/23/2003 | Firefox | 6/30/2009 | 2199 | |
| css.properties.overflow-wrap.normal π | Safari | 6/23/2003 | Firefox | 6/30/2009 | 2199 | |
| css.properties.overflow-x π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overflow-x.auto π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overflow-x.clip π | Firefox | 9/22/2020 | Safari | 9/12/2022 | 720 | |
| css.properties.overflow-x.hidden π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overflow-x.scroll π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overflow-x.visible π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overflow-y π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overflow-y.auto π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overflow-y.clip π | Firefox | 9/22/2020 | Safari | 9/12/2022 | 720 | |
| css.properties.overflow-y.hidden π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overflow-y.scroll π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overflow-y.visible π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.overscroll-behavior π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| css.properties.overscroll-behavior.auto π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| css.properties.overscroll-behavior.contain π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| css.properties.overscroll-behavior.none π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | Edge: The none value incorrectly behaves as contain (allowing for the elastic bounce effect). |
| css.properties.overscroll-behavior-block π | Firefox | 2/11/2020 | Safari | 9/12/2022 | 944 | |
| css.properties.overscroll-behavior-block.auto π | Firefox | 2/11/2020 | Safari | 9/12/2022 | 944 | |
| css.properties.overscroll-behavior-block.contain π | Firefox | 2/11/2020 | Safari | 9/12/2022 | 944 | |
| css.properties.overscroll-behavior-block.none π | Firefox | 2/11/2020 | Safari | 9/12/2022 | 944 | |
| css.properties.overscroll-behavior-inline π | Firefox | 2/11/2020 | Safari | 9/12/2022 | 944 | |
| css.properties.overscroll-behavior-inline.auto π | Firefox | 2/11/2020 | Safari | 9/12/2022 | 944 | |
| css.properties.overscroll-behavior-inline.contain π | Firefox | 2/11/2020 | Safari | 9/12/2022 | 944 | |
| css.properties.overscroll-behavior-inline.none π | Firefox | 2/11/2020 | Safari | 9/12/2022 | 944 | |
| css.properties.overscroll-behavior-x π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| css.properties.overscroll-behavior-x.auto π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| css.properties.overscroll-behavior-x.contain π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| css.properties.overscroll-behavior-x.none π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | Edge: The none value incorrectly behaves as contain (allowing for the elastic bounce effect). |
| css.properties.overscroll-behavior-y π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| css.properties.overscroll-behavior-y.auto π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| css.properties.overscroll-behavior-y.contain π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| css.properties.overscroll-behavior-y.none π | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | Edge: The none value incorrectly behaves as contain (allowing for the elastic bounce effect). |
| css.properties.padding π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.padding-block π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.padding-block-end π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.padding-block-start π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.padding-bottom π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.padding-inline π | Firefox | 3/19/2019 | Safari | 4/26/2021 | 769 | |
| css.properties.padding-inline-end π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.padding-inline-start π | Firefox | 9/22/2015 | Safari | 3/25/2019 | 1280 | |
| css.properties.padding-left π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.padding-right π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.padding-top π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.page π | Safari | 3/24/2020 | Firefox | 2/14/2023 | 1057 | |
| css.properties.page-break-after π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-after.always π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-after.auto π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-after.left π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-after.right π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-before π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-before.always π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-before.auto π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-before.left π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-before.right π | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| css.properties.page-break-inside π | Safari | 4/15/2005 | Firefox | 2/19/2013 | 2867 | |
| css.properties.page-break-inside.auto π | Safari | 4/15/2005 | Firefox | 2/19/2013 | 2867 | |
| css.properties.page-break-inside.avoid π | Safari | 4/15/2005 | Firefox | 2/19/2013 | 2867 | Firefox: Until Firefox 25, page-break-inside: avoid did not work with the height of a block.Firefox for Android: Until Firefox for Android 25, page-break-inside: avoid did not work with the height of a block. |
| css.properties.paint-order π | Safari | 9/19/2017 | Firefox | 5/9/2018 | 232 | Chrome: Does not affect stroked HTML text, see bug 41372165Chrome Android: Does not affect stroked HTML text, see bug 41372165Edge: Does not affect stroked HTML text, see bug 41372165Quest Browser: Does not affect stroked HTML text, see bug 41372165Opera: Does not affect stroked HTML text, see bug 41372165Opera Android: Does not affect stroked HTML text, see bug 41372165Safari: Does not affect stroked HTML text, see bug 168601Safari on iOS: Does not affect stroked HTML text, see bug 168601Samsung Internet: Does not affect stroked HTML text, see bug 41372165WebView Android: Does not affect stroked HTML text, see bug 41372165WebView on iOS: Does not affect stroked HTML text, see bug 168601 |
| css.properties.perspective π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | Safari on iOS: In iOS 13, the perspective property did not function properly. The issues were fixed in iOS 14.WebView on iOS: In iOS 13, the perspective property did not function properly. The issues were fixed in iOS 14. |
| css.properties.perspective.none π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.properties.perspective-origin π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.perspective-origin.bottom π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.properties.perspective-origin.center π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.properties.perspective-origin.left π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.properties.perspective-origin.right π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.properties.perspective-origin.top π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.properties.place-content π | Safari | 9/30/2015 | Firefox | 3/8/2016 | 160 | |
| css.properties.place-content.flex_context | Safari | 9/30/2015 | Firefox | 3/8/2016 | 160 | Firefox: Starting with version 60, you can only specify a single value if it is valid for both align-content and justify-content.Firefox for Android: Starting with version 60, you can only specify a single value if it is valid for both align-content and justify-content. |
| css.properties.place-content.grid_context | Firefox | 4/19/2017 | Safari | 9/19/2017 | 153 | Firefox: Starting with version 60, you can only specify a single value if it is valid for both align-content and justify-content.Firefox for Android: Starting with version 60, you can only specify a single value if it is valid for both align-content and justify-content. |
| css.properties.place-items π | Firefox | 3/8/2016 | Safari | 9/19/2017 | 560 | |
| css.properties.place-items.flex_context | Firefox | 3/8/2016 | Safari | 9/19/2017 | 560 | |
| css.properties.place-items.grid_context | Firefox | 3/8/2016 | Safari | 9/19/2017 | 560 | |
| css.properties.place-self π | Firefox | 3/8/2016 | Safari | 9/19/2017 | 560 | |
| css.properties.place-self.flex_context | Firefox | 3/8/2016 | Safari | 9/19/2017 | 560 | |
| css.properties.place-self.grid_context | Firefox | 3/8/2016 | Safari | 9/19/2017 | 560 | |
| css.properties.pointer-events π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| css.properties.pointer-events.html_elements | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| css.properties.position π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.position.absolute π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 57, absolute positioning did not work correctly when applied to elements inside tables that have border-collapse applied to them (bug 1379306).Firefox: Before Firefox 30, absolute positioning of table rows and row groups was not supported (bug 63895).Firefox for Android: Before Firefox for Android 57, absolute positioning did not work correctly when applied to elements inside tables that have border-collapse applied to them (bug 1379306).Firefox for Android: Before Firefox for Android 30, absolute positioning of table rows and row groups was not supported (bug 63895). |
| css.properties.position.absolutely_positioned_flex_children | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| css.properties.position.fixed π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 44, position: fixed didn't create a stacking context in most cases. Firefox and the specification have been modified to mimic Chrome and Safari's long-time behavior.Firefox for Android: Before Firefox for Android 44, position: fixed didn't create a stacking context in most cases. Firefox for Android and the specification have been modified to mimic Chrome and Safari's long-time behavior.Internet Explorer: In Internet Explorer, fixed positioning doesn't work if the document is in quirks mode. |
| css.properties.position.position_sticky_table_elements | Safari | 10/16/2014 | Firefox | 3/13/2018 | 1244 | Firefox: Borders do not display on table headers if border-collapse is set to collapse (bug 1727594).Firefox for Android: Borders do not display on table headers if border-collapse is set to collapse (bug 1727594). |
| css.properties.position.relative π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.position.static π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.position.sticky π | Firefox | 9/2/2014 | Safari | 9/19/2019 | 1843 | |
| css.properties.print-color-adjust π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | Chrome: Chrome does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.Chrome: Before version 26, if background images are clipped (for example, when using background-image sprites) and -webkit-print-color-adjust is set to exact, then backgrounds will appear distorted when printed. Solid backgrounds and background images that are not clipped (i.e., backgrounds that have narrower and shorter than the element to which they are applied) are printed correctly. See bug 40219905.Chrome Android: Chrome Android does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.Chrome Android: Before version 26, if background images are clipped (for example, when using background-image sprites) and -webkit-print-color-adjust is set to exact, then backgrounds will appear distorted when printed. Solid backgrounds and background images that are not clipped (i.e., backgrounds that have narrower and shorter than the element to which they are applied) are printed correctly. See bug 40219905.Edge: Edge does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.Quest Browser: Quest Browser does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.Quest Browser: Before version 5.0, if background images are clipped (for example, when using background-image sprites) and -webkit-print-color-adjust is set to exact, then backgrounds will appear distorted when printed. Solid backgrounds and background images that are not clipped (i.e., backgrounds that have narrower and shorter than the element to which they are applied) are printed correctly. See bug 40219905.Opera: Opera does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.Opera Android: Opera does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.Safari: Safari does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.Safari on iOS: Safari on iOS does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.Samsung Internet: Samsung Internet does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.Samsung Internet: In version 1, if background images are clipped (for example, when using background-image sprites) and -webkit-print-color-adjust is set to exact, then backgrounds will appear distorted when printed. Solid backgrounds and background images that are not clipped (i.e., backgrounds that have narrower and shorter than the element to which they are applied) are printed correctly. See bug 40219905.WebView Android: WebView does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants.WebView on iOS: WebView on iOS does not print backgrounds of the <body> element. If this property is set to exact for the <body> element, it will apply only to its descendants. |
| css.properties.print-color-adjust.economy π | Safari | 7/25/2012 | Firefox | 2/8/2022 | 3485 | |
| css.properties.print-color-adjust.exact π | Safari | 7/25/2012 | Firefox | 2/8/2022 | 3485 | |
| css.properties.quotes π | Firefox | 11/29/2005 | Safari | 9/30/2015 | 3592 | |
| css.properties.quotes.auto π | Firefox | 10/22/2019 | Safari | 4/26/2021 | 552 | Internet Explorer: This value is not supported, but the default browser behavior is to choose appropriate quotes for the user's language setting |
| css.properties.quotes.none π | Firefox | 11/29/2005 | Safari | 9/30/2015 | 3592 | |
| css.properties.r π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.resize π | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | Safari on iOS: The value is recognized, but has no effect.WebView on iOS: The value is recognized, but has no effect. |
| css.properties.resize.block | Firefox | 10/23/2018 | Safari | 9/12/2022 | 1420 | |
| css.properties.resize.block_level_support | Safari | 6/8/2009 | Firefox | 6/21/2011 | 743 | Firefox: resize doesn't have any effect on <iframe>. See bug 680823)Firefox for Android: resize doesn't have any effect on <iframe>. See bug 680823) |
| css.properties.resize.inline | Firefox | 10/23/2018 | Safari | 9/12/2022 | 1420 | |
| css.properties.right π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.right.auto π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.rotate π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.rotate.none π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.rotate.x_y_z_angle | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.row-gap π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.properties.row-gap.flex_context π | Firefox | 10/23/2018 | Safari | 4/26/2021 | 916 | |
| css.properties.row-gap.grid_context π | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | |
| css.properties.ruby-align π | Firefox | 5/12/2015 | Safari | 12/11/2024 | 3501 | Internet Explorer: Internet Explorer 9 and later supports an earlier draft of CSS Ruby with non-standard values for this property: auto, left, center, right, distribute-letter, distribute-space, and line-edge. |
| css.properties.ruby-align.center π | Firefox | 5/12/2015 | Safari | 12/11/2024 | 3501 | |
| css.properties.ruby-align.space-around π | Firefox | 5/12/2015 | Safari | 12/11/2024 | 3501 | |
| css.properties.ruby-align.space-between π | Firefox | 5/12/2015 | Safari | 12/11/2024 | 3501 | |
| css.properties.ruby-align.start π | Firefox | 5/12/2015 | Safari | 12/11/2024 | 3501 | |
| css.properties.ruby-position π | Firefox | 5/12/2015 | Safari | 12/11/2024 | 3501 | Chrome: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start).Chrome Android: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start).Edge: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start).Internet Explorer: Internet Explorer 9 and later support an old draft values: inline (equivalent of having display: inline on the ruby), and above (synonym of the modern over).Quest Browser: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start).Opera: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start).Opera Android: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start).Safari: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start).Safari on iOS: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start).WebView Android: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start).WebView on iOS: Implemented as a non-standard, prefixed, version of ruby-position, -webkit-ruby-position: it has two properties: before and after (both equivalent, for ltr and rtl scripts to the standard over value used with ruby-align: start). |
| css.properties.ruby-position.over | Firefox | 1/7/2020 | Safari | 12/11/2024 | 1800 | |
| css.properties.ruby-position.under | Firefox | 1/7/2020 | Safari | 12/11/2024 | 1800 | |
| css.properties.scale π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.scale.none π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.scroll-behavior π | Firefox | 2/24/2015 | Safari | 3/14/2022 | 2575 | |
| css.properties.scroll-behavior.auto π | Firefox | 2/24/2015 | Safari | 3/14/2022 | 2575 | |
| css.properties.scroll-behavior.smooth π | Firefox | 2/24/2015 | Safari | 3/14/2022 | 2575 | |
| css.properties.scroll-margin π | Safari | 4/26/2021 | Firefox | 7/13/2021 | 78 | Firefox: The scroll-margin property can cause an element's visibility to be incorrectly calculated for element.focus(). See bug 1708303.Firefox for Android: The scroll-margin property can cause an element's visibility to be incorrectly calculated for element.focus(). See bug 1708303.Safari: Before version 14.1, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.Safari on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.WebView on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265. |
| css.properties.scroll-margin-block π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-margin-block-end π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-margin-block-start π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-margin-bottom π | Firefox | 7/9/2019 | Safari | 4/26/2021 | 657 | Safari: Before version 14.1, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.Safari on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.WebView on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265. |
| css.properties.scroll-margin-inline π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-margin-inline-end π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-margin-inline-start π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-margin-left π | Firefox | 7/9/2019 | Safari | 4/26/2021 | 657 | Safari: Before version 14.1, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.Safari on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.WebView on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265. |
| css.properties.scroll-margin-right π | Firefox | 7/9/2019 | Safari | 4/26/2021 | 657 | Safari: Before version 14.1, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.Safari on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.WebView on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265. |
| css.properties.scroll-margin-top π | Firefox | 7/9/2019 | Safari | 4/26/2021 | 657 | Safari: Before version 14.1, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.Safari on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265.WebView on iOS: Before version 14.5, scroll margin is not applied for scrolls to fragment target or scrollIntoView(), see bug 189265. |
| css.properties.scroll-padding π | Firefox | 7/9/2019 | Safari | 4/26/2021 | 657 | Safari: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.Safari on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.WebView on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379. |
| css.properties.scroll-padding.auto π | Safari | 9/19/2017 | Firefox | 7/9/2019 | 658 | |
| css.properties.scroll-padding-block π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-block.auto π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-block-end π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-block-end.auto π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-block-start π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-block-start.auto π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-bottom π | Firefox | 7/9/2019 | Safari | 4/26/2021 | 657 | Safari: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.Safari on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.WebView on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379. |
| css.properties.scroll-padding-inline π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-inline.auto π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-inline-end π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-inline-end.auto π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-inline-start π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-inline-start.auto π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| css.properties.scroll-padding-left π | Firefox | 7/9/2019 | Safari | 4/26/2021 | 657 | Safari: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.Safari on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.WebView on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379. |
| css.properties.scroll-padding-right π | Firefox | 7/9/2019 | Safari | 4/26/2021 | 657 | Safari: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.Safari on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.WebView on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379. |
| css.properties.scroll-padding-top π | Firefox | 7/9/2019 | Safari | 4/26/2021 | 657 | Safari: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.Safari on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379.WebView on iOS: Scroll padding is not applied for scrolls to fragment target or scrollIntoView(), see bug 179379. |
| css.properties.scroll-snap-align π | Safari | 9/19/2017 | Firefox | 7/9/2019 | 658 | |
| css.properties.scroll-snap-align.center π | Safari | 9/19/2017 | Firefox | 7/9/2019 | 658 | |
| css.properties.scroll-snap-align.end π | Safari | 9/19/2017 | Firefox | 7/9/2019 | 658 | |
| css.properties.scroll-snap-align.none π | Safari | 9/19/2017 | Firefox | 7/9/2019 | 658 | |
| css.properties.scroll-snap-align.start π | Safari | 9/19/2017 | Firefox | 7/9/2019 | 658 | |
| css.properties.scroll-snap-stop π | Safari | 9/20/2021 | Firefox | 7/26/2022 | 309 | |
| css.properties.scroll-snap-stop.always π | Safari | 9/20/2021 | Firefox | 7/26/2022 | 309 | |
| css.properties.scroll-snap-stop.normal π | Safari | 9/20/2021 | Firefox | 7/26/2022 | 309 | |
| css.properties.scroll-snap-type π | Safari | 9/19/2017 | Firefox | 4/5/2022 | 1659 | Edge: Edge supports an earlier draft of CSS Scroll Snap without axis values.Firefox: On macOS Monterey, scroll snapping does not complete reliably. See bug 1749352.Firefox: An earlier draft of CSS Scroll Snap without axis values.Firefox for Android: An earlier draft of CSS Scroll Snap without axis values.Internet Explorer: Internet Explorer supports an earlier draft of CSS Scroll Snap without axis values.Safari: Older Safari versions support an earlier draft of CSS Scroll Snap without axis values.Safari on iOS: Older Safari on iOS versions support an earlier draft of CSS Scroll Snap without axis values.WebView on iOS: Older WebView on iOS versions support an earlier draft of CSS Scroll Snap without axis values. |
| css.properties.scroll-snap-type.block π | Firefox | 7/9/2019 | Safari | 3/24/2020 | 259 | |
| css.properties.scroll-snap-type.both π | Firefox | 7/9/2019 | Safari | 3/24/2020 | 259 | |
| css.properties.scroll-snap-type.inline π | Firefox | 7/9/2019 | Safari | 3/24/2020 | 259 | |
| css.properties.scroll-snap-type.none π | Firefox | 7/2/2015 | Safari | 3/24/2020 | 1727 | |
| css.properties.scroll-snap-type.x π | Firefox | 7/9/2019 | Safari | 3/24/2020 | 259 | |
| css.properties.scroll-snap-type.y π | Firefox | 7/9/2019 | Safari | 3/24/2020 | 259 | |
| css.properties.scrollbar-gutter π | Firefox | 2/8/2022 | Safari | 12/11/2024 | 1037 | |
| css.properties.scrollbar-gutter.auto π | Firefox | 2/8/2022 | Safari | 12/11/2024 | 1037 | |
| css.properties.scrollbar-gutter.stable π | Firefox | 2/8/2022 | Safari | 12/11/2024 | 1037 | |
| css.properties.scrollbar-width π | Firefox | 12/11/2018 | Safari | 12/11/2024 | 2192 | |
| css.properties.scrollbar-width.auto π | Firefox | 12/11/2018 | Safari | 12/11/2024 | 2192 | |
| css.properties.scrollbar-width.none π | Firefox | 12/11/2018 | Safari | 12/11/2024 | 2192 | |
| css.properties.scrollbar-width.thin π | Firefox | 12/11/2018 | Safari | 12/11/2024 | 2192 | |
| css.properties.shape-image-threshold π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.properties.shape-margin π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.properties.shape-outside π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.properties.shape-outside.circle | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.properties.shape-outside.gradient π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.properties.shape-outside.image π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.properties.shape-outside.inset | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.properties.shape-outside.none π | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.properties.shape-outside.polygon | Safari | 3/27/2017 | Firefox | 9/5/2018 | 527 | |
| css.properties.shape-rendering π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stop-color π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stop-opacity π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stroke π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stroke-dasharray π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.stroke-dasharray.none π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stroke-dashoffset π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.stroke-linecap π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.stroke-linecap.butt π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stroke-linecap.round π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stroke-linecap.square π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stroke-linejoin π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.stroke-linejoin.bevel π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stroke-linejoin.miter π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stroke-linejoin.round π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.stroke-miterlimit π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.stroke-opacity π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.stroke-width π | Firefox | 11/9/2004 | Safari | 3/24/2020 | 5614 | |
| css.properties.tab-size π | Safari | 10/22/2013 | Firefox | 8/10/2021 | 2849 | Chrome: This property is not yet animatable.Chrome Android: This property is not yet animatable.Edge: This property is not yet animatable.Firefox: Before Firefox 53, this property was not animatable.Firefox for Android: Before Firefox for Android 53, this property was not animatable.Quest Browser: This property is not yet animatable.Samsung Internet: This property is not yet animatable. |
| css.properties.tab-size.length π | Firefox | 4/19/2017 | Safari | 3/24/2020 | 1070 | |
| css.properties.table-layout π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.text-align π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.text-align.center π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| css.properties.text-align.end π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| css.properties.text-align.justify π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.text-align.left π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| css.properties.text-align.match-parent π | Firefox | 8/11/2015 | Safari | 3/14/2022 | 2407 | |
| css.properties.text-align.right π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| css.properties.text-align.start π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| css.properties.text-align-last π | Firefox | 9/20/2016 | Safari | 9/12/2022 | 2183 | Internet Explorer: IE only supports text-align-last when text-align is set to justify.Internet Explorer: The start and end values are not supported. |
| css.properties.text-align-last.auto π | Firefox | 4/24/2012 | Safari | 9/12/2022 | 3793 | |
| css.properties.text-anchor π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-combine-upright π | Firefox | 8/2/2016 | Safari | 3/14/2022 | 2050 | Chrome: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits.Chrome Android: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits.Firefox: Before version 81, Firefox implemented the property as animatable. This was corrected to spec in 81.Firefox for Android: Before version 81, Firefox for Android implemented the property as animatable. This was corrected to spec in 81.Quest Browser: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits.Opera: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits.Opera Android: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits.Safari: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits.Safari on iOS: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits.Samsung Internet: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits.WebView Android: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits.WebView on iOS: This property was initially named -webkit-text-combine according to a 2011 version of the CSS3 Writing Modes specification, supporting the values none and horizontal without digits. |
| css.properties.text-decoration π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.text-decoration.includes_color-and-style | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | |
| css.properties.text-decoration-color π | Firefox | 2/24/2015 | Safari | 3/25/2019 | 1490 | |
| css.properties.text-decoration-line π | Firefox | 2/24/2015 | Safari | 3/25/2019 | 1490 | |
| css.properties.text-decoration-line.blink π | Firefox | 12/10/2013 | Safari | 10/16/2014 | 310 | Chrome: The blink value does not have any effect.Chrome Android: The blink value does not have any effect.Edge: The blink value does not have any effect.Firefox: The blink value does not have any effect.Firefox for Android: The blink value does not have any effect.Quest Browser: The blink value does not have any effect.Samsung Internet: The blink value does not have any effect.WebView Android: The blink value does not have any effect. |
| css.properties.text-decoration-line.line-through π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | |
| css.properties.text-decoration-line.none π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | |
| css.properties.text-decoration-line.overline π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | |
| css.properties.text-decoration-line.underline π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | |
| css.properties.text-decoration-skip-ink π | Firefox | 10/22/2019 | Safari | 3/14/2022 | 874 | |
| css.properties.text-decoration-skip-ink.all π | Firefox | 4/7/2020 | Safari | 3/14/2022 | 706 | |
| css.properties.text-decoration-skip-ink.auto π | Firefox | 10/22/2019 | Safari | 3/14/2022 | 874 | |
| css.properties.text-decoration-skip-ink.none π | Firefox | 10/22/2019 | Safari | 3/14/2022 | 874 | |
| css.properties.text-decoration-style π | Firefox | 2/24/2015 | Safari | 3/25/2019 | 1490 | |
| css.properties.text-decoration-style.wavy | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | |
| css.properties.text-decoration-thickness π | Safari | 3/25/2019 | Firefox | 10/22/2019 | 211 | Chrome: The text-decoration-thickness property does not work unless either text-underline-offset is set to something other than auto or text-decoration-color is set to something other than currentColor. See bug 40734940.Chrome Android: The text-decoration-thickness property does not work unless either text-underline-offset is set to something other than auto or text-decoration-color is set to something other than currentColor. See bug 40734940.Edge: The text-decoration-thickness property does not work unless either text-underline-offset is set to something other than auto or text-decoration-color is set to something other than currentColor. See bug 40734940.Quest Browser: The text-decoration-thickness property does not work unless either text-underline-offset is set to something other than auto or text-decoration-color is set to something other than currentColor. See bug 40734940.Opera: The text-decoration-thickness property does not work unless either text-underline-offset is set to something other than auto or text-decoration-color is set to something other than currentColor. See bug 40734940.Opera Android: The text-decoration-thickness property does not work unless either text-underline-offset is set to something other than auto or text-decoration-color is set to something other than currentColor. See bug 40734940.Samsung Internet: The text-decoration-thickness property does not work unless either text-underline-offset is set to something other than auto or text-decoration-color is set to something other than currentColor. See bug 40734940.WebView Android: The text-decoration-thickness property does not work unless either text-underline-offset is set to something other than auto or text-decoration-color is set to something other than currentColor. See bug 40734940. |
| css.properties.text-decoration-thickness.auto π | Safari | 3/25/2019 | Firefox | 10/22/2019 | 211 | |
| css.properties.text-decoration-thickness.from-font π | Safari | 3/25/2019 | Firefox | 10/22/2019 | 211 | |
| css.properties.text-decoration-thickness.percentage | Firefox | 3/10/2020 | Safari | 3/5/2024 | 1456 | |
| css.properties.text-emphasis π | Safari | 10/22/2013 | Firefox | 4/26/2016 | 917 | |
| css.properties.text-emphasis-color π | Safari | 10/22/2013 | Firefox | 4/26/2016 | 917 | |
| css.properties.text-emphasis-position π | Safari | 10/22/2013 | Firefox | 4/26/2016 | 917 | |
| css.properties.text-emphasis-position.left | Safari | 10/16/2014 | Firefox | 4/26/2016 | 558 | |
| css.properties.text-emphasis-position.over | Safari | 3/24/2020 | Firefox | 12/13/2022 | 994 | |
| css.properties.text-emphasis-position.right | Safari | 10/16/2014 | Firefox | 4/26/2016 | 558 | |
| css.properties.text-emphasis-position.under | Safari | 3/24/2020 | Firefox | 12/13/2022 | 994 | |
| css.properties.text-emphasis-style π | Safari | 10/22/2013 | Firefox | 4/26/2016 | 917 | |
| css.properties.text-emphasis-style.circle π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-emphasis-style.dot π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-emphasis-style.double-circle π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-emphasis-style.filled π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-emphasis-style.none π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-emphasis-style.sesame π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-emphasis-style.triangle π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-indent π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.text-indent.each-line π | Safari | 9/20/2021 | Firefox | 12/19/2023 | 820 | |
| css.properties.text-indent.hanging π | Safari | 9/20/2021 | Firefox | 12/19/2023 | 820 | |
| css.properties.text-orientation π | Firefox | 9/22/2015 | Safari | 9/16/2020 | 1821 | |
| css.properties.text-orientation.mixed π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-orientation.sideways π | Safari | 10/22/2013 | Firefox | 1/26/2016 | 826 | |
| css.properties.text-orientation.upright π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.text-overflow π | Safari | 4/15/2005 | Firefox | 9/27/2011 | 2356 | Firefox: Until Firefox 10, handling of text-overflow on blocks with inline overflow on both horizontal sides was incorrect. Before Firefox 10, if only one value was specified (such as text-overflow: ellipsis;), text was ellipsed on both sides of the block, instead of only the end edge based on the block's text direction.Firefox for Android: Until Firefox for Android 10, handling of text-overflow on blocks with inline overflow on both horizontal sides was incorrect. Before Firefox for Android 10, if only one value was specified (such as text-overflow: ellipsis;), text was ellipsed on both sides of the block, instead of only the end edge based on the block's text direction. |
| css.properties.text-overflow.clip π | Safari | 4/15/2005 | Firefox | 9/27/2011 | 2356 | |
| css.properties.text-overflow.ellipsis π | Safari | 4/15/2005 | Firefox | 9/27/2011 | 2356 | |
| css.properties.text-rendering π | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | Chrome: This property is only supported on Windows and Linux.Chrome: Initial versions had bugs on Windows and Linux that broke font substitution, small-caps, letter-spacing or caused text to overlap. See bug 40156511, bug 40430936, bug 40444347, bug 40286561.Chrome Android: This property is only supported on Windows and Linux.Chrome Android: Initial versions had bugs on Windows and Linux that broke font substitution, small-caps, letter-spacing or caused text to overlap. See bug 40156511, bug 40430936, bug 40444347, bug 40286561.Edge: This property is only supported on Windows and Linux.Edge: Initial versions had bugs on Windows and Linux that broke font substitution, small-caps, letter-spacing or caused text to overlap. See bug 40156511, bug 40430936, bug 40444347, bug 40286561.Firefox: This property is only supported on Windows and Linux.Firefox: The optimizeSpeed option has no effect on Firefox 4 because the standard code for text rendering is already fast and there is not a faster code path at this time. See bug 595688 for details.Quest Browser: This property is only supported on Windows and Linux.Quest Browser: Initial versions had bugs on Windows and Linux that broke font substitution, small-caps, letter-spacing or caused text to overlap. See bug 40156511, bug 40430936, bug 40444347, bug 40286561.Samsung Internet: This property is only supported on Windows and Linux. Samsung Internet is not on Windows or Linux.WebView Android: From version 3 to 4.3, there is a serious bug where text-rendering: optimizeLegibility causes custom web fonts to not render. This was fixed in version 4.4. |
| css.properties.text-rendering.auto | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | Chrome: Chrome treats auto as optimizeSpeed.Chrome Android: Chrome Android treats auto as optimizeSpeed.Edge: Edge treats auto as optimizeSpeed.Firefox: If the font size is 20 pixels or higher, Firefox treats auto as optimizeLegibility. For smaller text, Firefox treats auto as optimizeSpeed. The 20-pixel threshold can be changed with the browser.display.auto_quality_min_font_size preference.Firefox for Android: If the font size is 20 pixels or higher, Firefox treats auto as optimizeLegibility. For smaller text, Firefox treats auto as optimizeSpeed. The 20-pixel threshold can be changed with the browser.display.auto_quality_min_font_size preference.Quest Browser: Quest Browser treats auto as optimizeSpeed.Opera: Opera treats auto as optimizeSpeed.Opera Android: Opera Android treats auto as optimizeSpeed.Safari: Safari treats auto as optimizeSpeed. See bug 41363.Safari on iOS: Safari on iOS treats auto as optimizeSpeed. See bug 41363.Samsung Internet: Samsung Internet treats auto as optimizeSpeed.WebView Android: WebView Android treats auto as optimizeSpeed.WebView on iOS: WebView on iOS treats auto as optimizeSpeed. See bug 41363. |
| css.properties.text-rendering.geometricPrecision | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | Chrome: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.Chrome Android: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.Edge: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.Firefox: Firefox treats geometricPrecision the same as optimizeLegibility.Firefox for Android: Firefox treats geometricPrecision the same as optimizeLegibility.Quest Browser: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.Opera: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.Opera Android: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.Samsung Internet: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system.WebView Android: Supports true geometric precision without rounding up or down to the nearest supported font size in the operating system. |
| css.properties.text-shadow π | Safari | 10/24/2003 | Firefox | 6/30/2009 | 2076 | Firefox: Firefox versions before 57 have a bug whereby transitions will not work when transitioning from a text-shadow with a color specified to a text-shadow without a color specified (bug 726550).Firefox: From Firefox 4, the blur radius is capped at 300 for performance reasons.Firefox: Firefox theoretically supports infinite text-shadows (don't try it).Firefox: If the <color> value is unspecified, then Firefox uses the value of the element's color property.Firefox for Android: Firefox for Android versions before 57 have a bug whereby transitions will not work when transitioning from a text-shadow with a color specified to a text-shadow without a color specified (bug 726550).Firefox for Android: From Firefox for Android 4, the blur radius is capped at 300 for performance reasons.Firefox for Android: Firefox for Android theoretically supports infinite text-shadows (don't try it).Firefox for Android: If the <color> value is unspecified, then Firefox for Android uses the value of the element's color property.Opera: Opera supports a maximum of 6-9 text-shadows for performance reasons. The blur radius is limited to 100px.Opera: Opera 9.5 to 10.1 adheres to the old, reverse painting order (in CSS2, the first specified shadow is on the bottom).Safari: In Safari, any shadows that do not explicitly specify a color are transparent.Safari: Safari 1.1 to 3.2 only supports one text-shadow (displays the first shadow of a comma-separated list and ignores the rest). Safari 4.0 (WebKit 528) and later support multiple text-shadows.Safari on iOS: In Safari, any shadows that do not explicitly specify a color are transparent.Safari on iOS: Safari iOS 1 and 2 only support one text-shadow (displays the first shadow of a comma-separated list and ignores the rest). Safari iOS 3 (WebKit 528) and later support multiple text-shadows.WebView on iOS: In Safari, any shadows that do not explicitly specify a color are transparent.WebView on iOS: Safari iOS 1 and 2 only support one text-shadow (displays the first shadow of a comma-separated list and ignores the rest). Safari iOS 3 (WebKit 528) and later support multiple text-shadows. |
| css.properties.text-transform π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: The text-transform property does not work for ::first-line pseudo-elements (nor for the one-colon syntax). See bug 40214861.Chrome Android: The text-transform property does not work for ::first-line pseudo-elements (nor for the one-colon syntax). See bug 40214861.Quest Browser: The text-transform property does not work for ::first-line pseudo-elements (nor for the one-colon syntax). See bug 40214861.Opera: Since Opera 15, the text-transform property does not work for ::first-line pseudo-elements (nor for the one-colon syntax). See bug 40214861.Safari: The text-transform property does not work for ::first-line pseudo-elements (also not for the old one-colon syntax). See bug 3409.Safari on iOS: The text-transform property does not work for ::first-line pseudo-elements (also not for the old one-colon syntax). See bug 3409.Samsung Internet: The text-transform property does not work for ::first-line pseudo-elements (nor for the one-colon syntax). See bug 40214861.WebView Android: The text-transform property does not work for ::first-line pseudo-elements (nor for the one-colon syntax). See bug 40214861.WebView on iOS: The text-transform property does not work for ::first-line pseudo-elements (also not for the old one-colon syntax). See bug 3409. |
| css.properties.text-transform.capitalize π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 14, some punctuation characters could interfere with correct capitalization. See bug 731536.Firefox for Android: Before Firefox for Android 14, some punctuation characters could interfere with correct capitalization. See bug 731536. |
| css.properties.text-transform.full-size-kana π | Firefox | 12/11/2018 | Safari | 9/18/2023 | 1742 | |
| css.properties.text-transform.full-width π | Firefox | 2/19/2013 | Safari | 9/18/2023 | 3863 | |
| css.properties.text-transform.lowercase π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.text-transform.lowercase_sigma | Firefox | 7/17/2012 | Safari | 7/25/2012 | 8 | |
| css.properties.text-transform.none π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.text-transform.turkic_is | Firefox | 7/17/2012 | Safari | 10/16/2014 | 821 | |
| css.properties.text-transform.uppercase π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.text-transform.uppercase_eszett | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.text-underline-offset π | Safari | 3/25/2019 | Firefox | 10/22/2019 | 211 | |
| css.properties.text-underline-offset.auto π | Safari | 3/25/2019 | Firefox | 10/22/2019 | 211 | |
| css.properties.text-underline-offset.percentage π | Firefox | 3/10/2020 | Safari | 12/11/2024 | 1737 | |
| css.properties.text-underline-position π | Safari | 3/25/2019 | Firefox | 3/10/2020 | 351 | |
| css.properties.text-underline-position.from-font | Safari | 3/25/2019 | Firefox | 3/10/2020 | 351 | |
| css.properties.text-underline-position.left | Firefox | 3/10/2020 | Safari | 12/11/2024 | 1737 | |
| css.properties.text-underline-position.right | Firefox | 3/10/2020 | Safari | 12/11/2024 | 1737 | |
| css.properties.text-underline-position.under | Safari | 3/25/2019 | Firefox | 3/10/2020 | 351 | |
| css.properties.text-wrap π | Firefox | 12/19/2023 | Safari | 3/5/2024 | 77 | |
| css.properties.text-wrap.balance π | Firefox | 12/19/2023 | Safari | 5/13/2024 | 146 | |
| css.properties.text-wrap.nowrap π | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.text-wrap.stable π | Firefox | 12/19/2023 | Safari | 5/13/2024 | 146 | |
| css.properties.text-wrap.wrap π | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.text-wrap-mode π | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.text-wrap-mode.nowrap | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.text-wrap-mode.wrap | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.text-wrap-style π | Firefox | 3/19/2024 | Safari | 5/13/2024 | 55 | |
| css.properties.text-wrap-style.auto π | Firefox | 3/19/2024 | Safari | 5/13/2024 | 55 | |
| css.properties.text-wrap-style.balance π | Firefox | 3/19/2024 | Safari | 5/13/2024 | 55 | |
| css.properties.text-wrap-style.stable π | Firefox | 3/19/2024 | Safari | 5/13/2024 | 55 | |
| css.properties.top π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: In Internet Explorer versions before 7, when both top and bottom are specified, the element position is overconstrained and the top property has precedence; the computed value of bottom is set to -top, while its specified value is ignored. |
| css.properties.top.auto π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.touch-action π | Firefox | 3/7/2017 | Safari | 9/19/2019 | 926 | Firefox: Not applicable to Firefox platforms that support neither pointer nor touch events. |
| css.properties.touch-action.manipulation | Firefox | 3/7/2017 | Safari | 9/19/2019 | 926 | Firefox: Not applicable to Firefox platforms that support neither pointer nor touch events. |
| css.properties.touch-action.none | Firefox | 3/7/2017 | Safari | 9/19/2019 | 926 | Firefox: Not applicable to Firefox platforms that support neither pointer nor touch events. |
| css.properties.touch-action.pan-x | Firefox | 3/7/2017 | Safari | 9/19/2019 | 926 | Firefox: Not applicable to Firefox platforms that support neither pointer nor touch events. |
| css.properties.touch-action.pan-y | Firefox | 3/7/2017 | Safari | 9/19/2019 | 926 | Firefox: Not applicable to Firefox platforms that support neither pointer nor touch events. |
| css.properties.touch-action.pinch-zoom | Safari | 9/19/2019 | Firefox | 1/26/2021 | 495 | Firefox: Not applicable to Firefox platforms that support neither pointer nor touch events.Firefox for Android: Not applicable to Firefox for Android platforms that support neither pointer nor touch events. |
| css.properties.transform π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | Internet Explorer: Internet Explorer does not support the global values initial and unset.Internet Explorer: Internet Explorer 5.5 or later supports a proprietary Matrix Filter which can be used to achieve a similar effect.WebView Android: Android 2.3 has a bug where input forms will "jump" when typing, if any container element has a -webkit-transform. |
| css.properties.transform.3d | Safari | 6/8/2009 | Firefox | 10/9/2012 | 1219 | |
| css.properties.transform-box π | Firefox | 8/8/2017 | Safari | 9/19/2017 | 42 | |
| css.properties.transform-box.border-box π | Firefox | 8/8/2017 | Safari | 3/24/2020 | 959 | |
| css.properties.transform-box.content-box π | Safari | 3/24/2020 | Firefox | 4/16/2024 | 1484 | |
| css.properties.transform-box.fill-box π | Firefox | 8/8/2017 | Safari | 3/24/2020 | 959 | |
| css.properties.transform-box.stroke-box π | Safari | 3/24/2020 | Firefox | 4/16/2024 | 1484 | |
| css.properties.transform-box.view-box π | Firefox | 8/8/2017 | Safari | 3/24/2020 | 959 | |
| css.properties.transform-origin π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.transform-origin.bottom π | Safari | 4/29/2005 | Firefox | 1/7/2020 | 5366 | |
| css.properties.transform-origin.center π | Safari | 4/29/2005 | Firefox | 1/7/2020 | 5366 | |
| css.properties.transform-origin.left π | Safari | 4/29/2005 | Firefox | 1/7/2020 | 5366 | |
| css.properties.transform-origin.right π | Safari | 4/29/2005 | Firefox | 1/7/2020 | 5366 | |
| css.properties.transform-origin.svg_elements | Safari | 7/25/2012 | Firefox | 12/15/2015 | 1238 | Firefox: Keywords and percentages refer to the canvas instead of the object itself. See bug 1209061.Firefox for Android: Keywords and percentages refer to the canvas instead of the object itself. See bug 1209061.Safari: Only supported for transformations applied using the CSS transform property (e.g. .className { transform: rotate(45deg); transform-origin: center; }). It has no effect on transformations applied using the transform SVG attribute (e.g. <rect style="transform-origin: center;" transform="rotate(45)" />).Safari on iOS: Only supported for transformations applied using the CSS transform property (e.g. .className { transform: rotate(45deg); transform-origin: center; }). It has no effect on transformations applied using the transform SVG attribute (e.g. <rect style="transform-origin: center;" transform="rotate(45)" />).WebView on iOS: Only supported for transformations applied using the CSS transform property (e.g. .className { transform: rotate(45deg); transform-origin: center; }). It has no effect on transformations applied using the transform SVG attribute (e.g. <rect style="transform-origin: center;" transform="rotate(45)" />). |
| css.properties.transform-origin.three_value_syntax | Safari | 6/7/2010 | Firefox | 1/31/2012 | 603 | |
| css.properties.transform-origin.top π | Safari | 4/29/2005 | Firefox | 1/7/2020 | 5366 | |
| css.properties.transform-style π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.transition π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | Firefox: Before Firefox 57, transitions do not work when transitioning from a text-shadow with a color specified to a text-shadow without a color specified (see bug 726550).Firefox: Before Firefox 57, cancelling a filling animation (for example, with animation-fill-mode: forwards set) can trigger a transition set on the same element, although only once (see bug 1192592 and these test cases for more information).Firefox: Before Firefox 57, the background-position property can't be transitioned between two values containing different numbers of <position> values, for example background-position: 10px 10px; and background-position: 20px 20px, 30px 30px; (see bug 1390446).Firefox for Android: Before Firefox for Android 57, transitions do not work when transitioning from a text-shadow with a color specified to a text-shadow without a color specified (see bug 726550).Firefox for Android: Before Firefox for Android 57, cancelling a filling animation (for example, with animation-fill-mode: forwards set) can trigger a transition set on the same element, although only once (see bug 1192592 and these test cases for more information).Firefox for Android: Before Firefox for Android 57, the background-position property can't be transitioned between two values containing different numbers of <position> values, for example background-position: 10px 10px; and background-position: 20px 20px, 30px 30px; (see bug 1390446). |
| css.properties.transition.transition-behavior | Safari | 3/5/2024 | Firefox | 8/6/2024 | 154 | |
| css.properties.transition-behavior π | Safari | 3/5/2024 | Firefox | 8/6/2024 | 154 | |
| css.properties.transition-delay π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.transition-duration π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.transition-property π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.transition-property.IDENT_value | Safari | 6/8/2009 | Firefox | 10/9/2012 | 1219 | |
| css.properties.transition-property.all π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| css.properties.transition-property.none π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| css.properties.transition-timing-function π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| css.properties.transition-timing-function.jump | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | |
| css.properties.translate π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.translate.none π | Firefox | 1/7/2020 | Safari | 4/26/2021 | 475 | |
| css.properties.unicode-bidi π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.properties.unicode-bidi.bidi-override π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.properties.unicode-bidi.embed π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.properties.unicode-bidi.isolate π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | Chrome: Before Chrome 47, -webkit-isolate could lock up the browser.Chrome: Since Chrome 19, the syntax from a previous version of the specification, where the isolate keyword could be used together with bidi-override, is allowed.Firefox: From Firefox 10 to Firefox 16 (inclusive), the isolate keyword could be used together with bidi-override, which was the syntax from a previous version of the specification. From Firefox 17, only one value is allowed. Use isolate-override instead the previous isolate bidi-override.Firefox for Android: From Firefox for Android 10 to Firefox for Android 16 (inclusive), the isolate keyword could be used together with bidi-override, which was the syntax from a previous version of the specification. From Firefox for Android 17, only one value is allowed. Use isolate-override instead the previous isolate bidi-override.Opera: Before Opera 34, -webkit-isolate could lock up the browser.Opera: Since Opera 15, the syntax from a previous version of the specification, where the isolate keyword could be used together with bidi-override, is allowed.Safari: Before Safari 9, -webkit-isolate could lock up the browser.Safari on iOS: Before Safari on iOS 9, -webkit-isolate could lock up the browser.WebView on iOS: Before WebView on iOS 9, -webkit-isolate could lock up the browser. |
| css.properties.unicode-bidi.isolate-override π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | |
| css.properties.unicode-bidi.normal π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.properties.unicode-bidi.plaintext π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | Firefox: Before Firefox 50, the plaintext value was ignored for vertical writing modes (bug 1302734).Firefox: Before Firefox 15, plaintext didn't do anything to an inline element. The specification changed and the implementation was changed in Firefox 15.Firefox for Android: Before Firefox for Android 50, the plaintext value was ignored for vertical writing modes (bug 1302734).Firefox for Android: Before Firefox for Android 15, plaintext didn't do anything to an inline element. The specification changed and the implementation was changed in Firefox for Android 15. |
| css.properties.user-select π | Safari | 10/26/2007 | Firefox | 9/3/2019 | 4330 | |
| css.properties.user-select.all | Firefox | 11/9/2004 | Safari | 9/12/2022 | 6516 | |
| css.properties.user-select.auto | Firefox | 11/9/2004 | Safari | 4/29/2005 | 171 | |
| css.properties.user-select.none | Safari | 4/29/2005 | Firefox | 5/14/2013 | 2937 | |
| css.properties.user-select.text | Firefox | 11/9/2004 | Safari | 4/29/2005 | 171 | |
| css.properties.vector-effect π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.vertical-align π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.vertical-align.baseline π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.vertical-align.bottom π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.vertical-align.middle π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.vertical-align.sub π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.vertical-align.super π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.vertical-align.text-bottom π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.vertical-align.text-top π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.vertical-align.top π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.visibility π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: Internet Explorer doesn't support visibility: initial.Internet Explorer: Internet Explorer doesn't support visibility: unset.Internet Explorer: Up to Internet Explorer 7, descendants of hidden elements will still be invisible even if they have visibility set to visible. |
| css.properties.visibility.collapse π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | Chrome: Chrome treats visibility: collapse like hidden, leaving a white gap.Chrome: Chrome supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements.Chrome Android: Chrome Android treats visibility: collapse like hidden, leaving a white gap.Chrome Android: Chrome Android supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements.Firefox: Firefox doesn't hide borders when hiding <col> and <colgroup> elements if border-collapse: collapse is set.Firefox: Before Firefox 88, collapse is not supported on ruby annotations.Firefox for Android: Firefox for Android doesn't hide borders when hiding <col> and <colgroup> elements if border-collapse: collapse is set.Firefox for Android: Before Firefox for Android 88, collapse is not supported on ruby annotations.Quest Browser: Quest Browser treats visibility: collapse like hidden, leaving a white gap.Quest Browser: Quest Browser supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements.Opera: Opera treats visibility: collapse like hidden, leaving a white gap.Opera: Opera supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements.Opera Android: Opera treats visibility: collapse like hidden, leaving a white gap.Opera Android: Opera supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements.Safari: Safari treats visibility: collapse like hidden, leaving a white gap.Safari: Safari supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements.Safari on iOS: Safari on iOS treats visibility: collapse like hidden, leaving a white gap.Safari on iOS: Safari on iOS supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements.Samsung Internet: Samsung Internet treats visibility: collapse like hidden, leaving a white gap.Samsung Internet: Samsung Internet supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements.WebView Android: WebView Android treats visibility: collapse like hidden, leaving a white gap.WebView Android: WebView Android supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements.WebView on iOS: WebView on iOS treats visibility: collapse like hidden, leaving a white gap.WebView on iOS: WebView on iOS supports the collapse value only on <tr>, <thead>, <tbody>, and <tfoot>, but not on <col> and <colgroup> elements. |
| css.properties.visibility.hidden π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.visibility.visible π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.white-space π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.white-space.break-spaces π | Firefox | 9/3/2019 | Safari | 3/24/2020 | 203 | |
| css.properties.white-space.normal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.white-space.nowrap π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.white-space.pre π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.white-space.pre-line π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | |
| css.properties.white-space.pre-wrap π | Safari | 10/26/2007 | Firefox | 6/17/2008 | 235 | Internet Explorer: From Internet Explorer 5.5 to 7, word-wrap: break-word; can be used for line breaks in pre elements. |
| css.properties.white-space.textarea_support | Safari | 6/23/2003 | Firefox | 2/24/2015 | 4264 | |
| css.properties.white-space-collapse π | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.white-space-collapse.break-spaces π | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.white-space-collapse.collapse π | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.white-space-collapse.preserve π | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.white-space-collapse.preserve-breaks π | Safari | 3/5/2024 | Firefox | 3/19/2024 | 14 | |
| css.properties.width π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.width.auto π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.width.fit-content π | Safari | 9/19/2017 | Firefox | 11/2/2021 | 1505 | |
| css.properties.width.is_animatable | Firefox | 10/9/2012 | Safari | 10/22/2013 | 378 | |
| css.properties.width.max-content π | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.width.min-content π | Safari | 9/19/2017 | Firefox | 3/19/2019 | 546 | |
| css.properties.width.stretch π | Firefox | 6/17/2008 | Safari | 10/22/2013 | 1953 | |
| css.properties.will-change π | Firefox | 2/24/2015 | Safari | 3/21/2016 | 391 | |
| css.properties.will-change.auto π | Firefox | 2/24/2015 | Safari | 3/21/2016 | 391 | |
| css.properties.will-change.contents π | Firefox | 2/24/2015 | Safari | 3/21/2016 | 391 | |
| css.properties.will-change.scroll-position π | Firefox | 2/24/2015 | Safari | 3/21/2016 | 391 | |
| css.properties.word-break π | Safari | 10/26/2007 | Firefox | 8/28/2012 | 1768 | Internet Explorer: No version of Internet Explorer supports the initial value.Internet Explorer: Don't use -ms-word-break, which is a synonym for word-break. |
| css.properties.word-break.break-all π | Safari | 10/26/2007 | Firefox | 8/28/2012 | 1768 | |
| css.properties.word-break.break-word π | Safari | 10/26/2007 | Firefox | 5/21/2019 | 4225 | |
| css.properties.word-break.keep-all π | Firefox | 8/28/2012 | Safari | 9/30/2015 | 1128 | |
| css.properties.word-break.normal π | Safari | 10/26/2007 | Firefox | 8/28/2012 | 1768 | |
| css.properties.word-spacing π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.word-spacing.normal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.word-spacing.percentages | Safari | 10/22/2013 | Firefox | 3/8/2016 | 868 | |
| css.properties.word-spacing.svg_elements | Safari | 7/20/2011 | Firefox | 1/7/2020 | 3093 | |
| css.properties.writing-mode π | Firefox | 9/22/2015 | Safari | 3/27/2017 | 552 | Firefox: Firefox 42 added support for bidirectional and RTL scripts in vertical modes.Firefox for Android: Firefox for Android 42 added support for bidirectional and RTL scripts in vertical modes.Internet Explorer: Internet Explorer's implementation differs from the specification.Internet Explorer: Internet Explorer's implementation differs from the specification. |
| css.properties.writing-mode.horizontal-tb | Safari | 9/30/2015 | Firefox | 12/15/2015 | 76 | |
| css.properties.writing-mode.lr | Firefox | 12/15/2015 | Safari | 3/27/2017 | 468 | |
| css.properties.writing-mode.lr-tb | Firefox | 12/15/2015 | Safari | 3/27/2017 | 468 | |
| css.properties.writing-mode.rl | Firefox | 12/15/2015 | Safari | 3/27/2017 | 468 | |
| css.properties.writing-mode.rl-tb | Firefox | 12/15/2015 | Safari | 3/27/2017 | 468 | |
| css.properties.writing-mode.tb | Firefox | 12/15/2015 | Safari | 3/27/2017 | 468 | |
| css.properties.writing-mode.tb-rl | Firefox | 12/15/2015 | Safari | 3/27/2017 | 468 | |
| css.properties.writing-mode.vertical-lr | Safari | 9/30/2015 | Firefox | 12/15/2015 | 76 | |
| css.properties.writing-mode.vertical-rl | Safari | 9/30/2015 | Firefox | 12/15/2015 | 76 | |
| css.properties.writing-mode.vertical_oriented_form_controls | Firefox | 11/21/2023 | Safari | 3/5/2024 | 105 | Chrome: Supported for select, button, textarea, textual input, range slider, meter, and progress elements.Chrome: Supported for select, button, textarea and textual input elements.Chrome: Only supported for select and button elements.Chrome Android: Supported for select, button, textarea, textual input, range slider, meter, and progress elements.Chrome Android: Supported for select, button, textarea and textual input elements.Chrome Android: Only supported for select and button elements.Edge: Supported for select, button, textarea, textual input, range slider, meter, and progress elements.Edge: Supported for select, button, textarea and textual input elements.Edge: Only supported for select and button elements.Opera: Supported for select, button, textarea, textual input, range slider, meter, and progress elements.Opera: Supported for select, button, textarea and textual input elements.Opera: Only supported for select and button elements.Opera Android: Supported for select, button, textarea, textual input, range slider, meter, and progress elements.Opera Android: Supported for select, button, textarea and textual input elements.Opera Android: Only supported for select and button elements.Safari: Support for range sliders, textual inputs, and textareas onlySafari on iOS: Support for range sliders, textual inputs, and textareas onlySamsung Internet: Supported for select, button, textarea, textual input, range slider, meter, and progress elements.Samsung Internet: Supported for select, button, textarea and textual input elements.Samsung Internet: Only supported for select and button elements.WebView Android: Supported for select, button, textarea, textual input, range slider, meter, and progress elements.WebView Android: Supported for select, button, textarea and textual input elements.WebView Android: Only supported for select and button elements.WebView on iOS: Support for range sliders, textual inputs, and textareas only |
| css.properties.x π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.y π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.properties.z-index π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.z-index.auto π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.properties.z-index.negative_values | Safari | 6/23/2003 | Firefox | 6/17/2008 | 1821 | |
| css.properties.zoom π | Safari | 3/18/2008 | Firefox | 5/14/2024 | 5901 | |
| css.selectors.active π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.active.non_a_elements | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Safari on iOS: By default, Safari on iOS does not use the :active state unless there is a touchstart event handler on the relevant element or on the <body> element.WebView on iOS: By default, WebView on iOS does not use the :active state unless there is a touchstart event handler on the relevant element or on the <body> element. |
| css.selectors.after π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | Firefox: Before Firefox 57, Firefox had a bug where ::after pseudo-elements were still generated, even if the content property value were set to normal or none.Firefox: Before Firefox 3.5, only the CSS level 2 behavior of :after was supported, which disallowed position, float, list-style-* and some display properties.Firefox for Android: Before Firefox for Android 57, Firefox for Android had a bug where ::after pseudo-elements were still generated, even if the content property value were set to normal or none.Firefox for Android: Before Firefox for Android 4.5, only the CSS level 2 behavior of :after was supported, which disallowed position, float, list-style-* and some display properties. |
| css.selectors.after.animation_and_transition_support | Firefox | 3/22/2011 | Safari | 10/22/2013 | 945 | |
| css.selectors.any-link π | Safari | 9/30/2015 | Firefox | 11/15/2016 | 412 | |
| css.selectors.any-link.not_match_link | Firefox | 3/23/2021 | Safari | 9/20/2021 | 181 | |
| css.selectors.attribute π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.selectors.attribute.case_insensitive_modifier | Safari | 9/30/2015 | Firefox | 6/7/2016 | 251 | |
| css.selectors.autofill π | Firefox | 2/23/2021 | Safari | 9/20/2021 | 209 | |
| css.selectors.backdrop π | Firefox | 6/7/2016 | Safari | 3/14/2022 | 2106 | |
| css.selectors.backdrop.dialog | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| css.selectors.backdrop.fullscreen | Firefox | 6/7/2016 | Safari | 3/27/2023 | 2484 | |
| css.selectors.backdrop.inherit_from_originating_element | Firefox | 11/21/2023 | Safari | 3/5/2024 | 105 | |
| css.selectors.backdrop.popover | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| css.selectors.before π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | Firefox: Before Firefox 57, Firefox had a bug where ::before pseudo-elements were still generated, even if the content property value were set to normal or none.Firefox: Before Firefox 3.5, only the CSS level 2 behavior of :before was supported, which disallowed position, float, list-style-* and some display properties.Firefox for Android: Before Firefox 57, Firefox had a bug where ::before pseudo-elements were still generated, even if the content property value were set to normal or none. |
| css.selectors.before.animation_and_transition_support | Firefox | 3/22/2011 | Safari | 10/22/2013 | 945 | |
| css.selectors.checked π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | Chrome: On macOS, styling <option> elements has no effect.Edge: On macOS, styling <option> elements has no effect.Firefox: From Firefox 56, <option> elements cannot be styled.Firefox: On macOS, styling <option> elements has no effect.Firefox for Android: From Firefox 56, <option> elements cannot be styled.Opera: On macOS, styling <option> elements has no effect.Safari: Styling <option> elements has no effect.Safari on iOS: Styling <option> elements has no effect.WebView on iOS: Styling <option> elements has no effect. |
| css.selectors.child π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: Before Internet Explorer 10, the combinator only works in standards mode. |
| css.selectors.class π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.cue π | Safari | 10/22/2013 | Firefox | 8/8/2017 | 1386 | Firefox: From Firefox 69, only allowed properties apply to the ::cue pseudo-element with no argument. See Permitted properties for a list of the allowed properties. |
| css.selectors.default π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| css.selectors.defined π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| css.selectors.descendant π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.dir π | Firefox | 9/20/2016 | Safari | 3/27/2023 | 2379 | |
| css.selectors.disabled π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | Edge: Before Edge 79, Edge did not recognize :disabled on the <fieldset> element.Internet Explorer: Internet Explorer does not recognize :disabled on the <fieldset> element. |
| css.selectors.empty π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| css.selectors.enabled π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| css.selectors.file-selector-button π | Firefox | 10/20/2020 | Safari | 4/26/2021 | 188 | |
| css.selectors.first π | Safari | 7/25/2012 | Firefox | 8/1/2023 | 4024 | |
| css.selectors.first-child π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | Internet Explorer: Internet Explorer 7 doesn't update :first-child styles when elements are added dynamically.Internet Explorer: In Internet Explorer 8, if an element is inserted dynamically by clicking on a link, then the :first-child style isn't applied until the link loses focus. |
| css.selectors.first-letter π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.first-line π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: Before Chrome 62, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.Chrome: Before Chrome 62, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.Chrome Android: Before Chrome Android 62, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.Chrome Android: Before Chrome Android 62, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.Quest Browser: Before Quest Browser 5.0, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.Quest Browser: Before Quest Browser 5.0, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.Opera: From Opera 15 to Opera 49 (exclusive), the text-transform property does not work on ::first-line or :first-line pseudo-elements. See bug 40214861.Opera: From Opera 15 to Opera 49 (exclusive), the text-transform property does not work on ::first-line or :first-line pseudo-elements. See bug 40214861.Opera Android: From Opera 15 to Opera 49 (exclusive), the text-transform property does not work on ::first-line or :first-line pseudo-elements. See bug 40214861.Opera Android: From Opera 15 to Opera 49 (exclusive), the text-transform property does not work on ::first-line or :first-line pseudo-elements. See bug 40214861.Safari: The text-transform property does not work for ::first-line or :first-line pseudo-elements. See bug 3409.Safari: The text-transform property does not work for ::first-line or :first-line pseudo-elements. See bug 3409.Safari on iOS: The text-transform property does not work for ::first-line or :first-line pseudo-elements. See bug 3409.Safari on iOS: The text-transform property does not work for ::first-line or :first-line pseudo-elements. See bug 3409.Samsung Internet: Before Samsung Internet 8.0, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.Samsung Internet: Before Samsung Internet 8.0, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.WebView Android: Before WebView 62, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.WebView Android: Before WebView 62, the text-transform property does not work on ::first-line pseudo-elements. See bug 40214861.WebView on iOS: The text-transform property does not work for ::first-line or :first-line pseudo-elements. See bug 3409.WebView on iOS: The text-transform property does not work for ::first-line or :first-line pseudo-elements. See bug 3409. |
| css.selectors.first-of-type π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Edge: Before Edge 16, Microsoft Edge treats all unknown elements (such as custom elements) as the same element type.Internet Explorer: Internet Explorer treats all unknown elements (such as custom elements) as the same element type. |
| css.selectors.focus π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.focus-visible π | Firefox | 1/26/2021 | Safari | 3/14/2022 | 412 | |
| css.selectors.focus-within π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| css.selectors.fullscreen π | Firefox | 12/11/2018 | Safari | 3/27/2023 | 1567 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.WebView on iOS: Only available on iPad, not on iPhone.WebView on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.WebView on iOS: Only available on iPad, not on iPhone. |
| css.selectors.has π | Safari | 3/14/2022 | Firefox | 12/19/2023 | 645 | |
| css.selectors.host π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| css.selectors.hostfunction π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | Safari: Certain CSS selectors do not work (:host > .local-child) and styling slotted content (::slotted) is buggy.Safari on iOS: Certain CSS selectors do not work (:host > .local-child) and styling slotted content (::slotted) is buggy.WebView on iOS: Certain CSS selectors do not work (:host > .local-child) and styling slotted content (::slotted) is buggy. |
| css.selectors.hover π | Firefox | 11/9/2004 | Safari | 4/29/2005 | 171 | Safari on iOS: As of Safari for iOS 7.1.2, tapping a clickable element causes the element to enter the :hover state. The element will remain in the :hover state until a different element has entered the :hover state.WebView on iOS: As of Safari for iOS 7.1.2, tapping a clickable element causes the element to enter the :hover state. The element will remain in the :hover state until a different element has entered the :hover state. |
| css.selectors.hover.a_elements | Firefox | 11/9/2004 | Safari | 4/29/2005 | 171 | |
| css.selectors.hover.all_elements | Firefox | 11/9/2004 | Safari | 4/29/2005 | 171 | Edge: In Edge, hovering over an element and then scrolling up or down without moving the pointer will leave the element in the :hover state until the pointer is moved. See bug 5381673.Internet Explorer: In Internet Explorer 8 to Internet Explorer 11, hovering over an element and then scrolling up or down without moving the pointer will leave the element in the :hover state until the pointer is moved. See bug 926665.Internet Explorer: In Internet Explorer 9 (and possibly earlier), if a <table> has a parent with a non-auto width, overflow-x: auto;, the <table> has enough content to horizontally overflow its parent, and there are :hover styles set on elements within the table, then hovering over said elements will cause the <table>'s height to increase. See a live demo that triggers the bug. One workaround for the bug is to set min-height: 0%; (the % unit must be specified, since unitless and px don't work) on the <table>'s parent element. |
| css.selectors.id π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.in-range π | Safari | 7/20/2011 | Firefox | 4/29/2014 | 1014 | Chrome: Before Chrome 52, :in-range matched disabled and read-only inputs (see bug 41248615). In Chrome 52, it was changed to only match enabled read-write inputs.Chrome Android: Before Chrome Android 52, :in-range matched disabled and read-only inputs (see bug 41248615). In Chrome Android 52, it was changed to only match enabled read-write inputs.Firefox: Before Firefox 50, :in-range matched disabled and read-only inputs (see bug 1264157). In Firefox 50, it was changed to only match enabled read-write inputs.Quest Browser: Before Quest Browser 5.0, :in-range matched disabled and read-only inputs (see bug 41248615). In Quest Browser 5.0, it was changed to only match enabled read-write inputs.Opera: Before Opera 39, :in-range matched disabled and read-only inputs (see bug 41248615). In Opera 39, it was changed to only match enabled read-write inputs.Opera Android: Before Opera 39, :in-range matched disabled and read-only inputs (see bug 41248615). In Opera 39, it was changed to only match enabled read-write inputs.Safari: In Safari, :in-range matched disabled and read-only inputs (see bug 156530). It was later changed to only match enabled read-write inputs.Safari on iOS: In Safari on iOS, :in-range matched disabled and read-only inputs (see bug 156530). It was later changed to only match enabled read-write inputs.Samsung Internet: Before version 6.0, :in-range matched disabled and read-only inputs (see bug 41248615). In version 6.0, it was changed to only match enabled read-write inputs.WebView Android: Before version 52, :in-range matched disabled and read-only inputs (see bug 41248615). In version 52, it was changed to only match enabled read-write inputs.WebView on iOS: In WebView on iOS, :in-range matched disabled and read-only inputs (see bug 156530). It was later changed to only match enabled read-write inputs. |
| css.selectors.indeterminate π | Firefox | 10/24/2006 | Safari | 10/26/2007 | 367 | |
| css.selectors.indeterminate.checkbox | Safari | 10/26/2007 | Firefox | 1/21/2010 | 818 | |
| css.selectors.indeterminate.progress | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| css.selectors.indeterminate.radio | Safari | 9/20/2016 | Firefox | 1/24/2017 | 126 | |
| css.selectors.invalid π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| css.selectors.invalid.form | Firefox | 6/5/2012 | Safari | 9/30/2015 | 1212 | |
| css.selectors.is π | Firefox | 6/30/2020 | Safari | 9/16/2020 | 78 | Chrome: Doesn't support combinators.Chrome Android: Doesn't support combinators.Edge: Doesn't support combinators.Firefox: Doesn't support combinators.Firefox: See bug 906353.Firefox for Android: Doesn't support combinators.Firefox for Android: See bug 906353.Quest Browser: Doesn't support combinators.Opera: Doesn't support combinators.Opera Android: Doesn't support combinators.Safari: Doesn't support combinators.Safari on iOS: Doesn't support combinators.WebView Android: Doesn't support combinators.WebView on iOS: Doesn't support combinators. |
| css.selectors.is.forgiving_selector_list | Safari | 9/16/2020 | Firefox | 10/20/2020 | 34 | |
| css.selectors.lang π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| css.selectors.lang.argument_list | Safari | 9/30/2015 | Firefox | 6/6/2023 | 2806 | |
| css.selectors.lang.wildcards | Safari | 9/30/2015 | Firefox | 6/6/2023 | 2806 | |
| css.selectors.last-child π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| css.selectors.last-of-type π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Edge: Before Edge 16, Microsoft Edge treats all unknown elements (such as custom elements) as the same element type.Internet Explorer: Internet Explorer treats all unknown elements (such as custom elements) as the same element type. |
| css.selectors.link π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.link.not_match_link | Firefox | 3/23/2021 | Safari | 9/20/2021 | 181 | |
| css.selectors.list π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.marker π | Safari | 4/12/2018 | Firefox | 7/9/2019 | 453 | Safari: Safari support is limited to color and font-size. See bug 204163.Safari on iOS: Safari on iOS support is limited to color and font-size. See bug 204163.WebView on iOS: WebView on iOS support is limited to color and font-size. See bug 204163. |
| css.selectors.modal π | Safari | 7/20/2022 | Firefox | 7/26/2022 | 6 | |
| css.selectors.namespace π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.selectors.nesting π | Firefox | 8/29/2023 | Safari | 12/11/2023 | 104 | Chrome: Does not support nested rules that start with a type selector.Chrome Android: Does not support nested rules that start with a type selector.Edge: Does not support nested rules that start with a type selector.Opera: Does not support nested rules that start with a type selector.Opera Android: Does not support nested rules that start with a type selector.Safari: Does not support nested rules that start with a type selector.Safari on iOS: Does not support nested rules that start with a type selector.Samsung Internet: Does not support nested rules that start with a type selector.WebView Android: Does not support nested rules that start with a type selector.WebView on iOS: Does not support nested rules that start with a type selector. |
| css.selectors.next-sibling π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: Before Internet Explorer 10, the combinator only works in standards mode.Internet Explorer: Internet Explorer 7 doesn't update the style correctly when an element is dynamically placed before an element that matched the selector.Internet Explorer: In Internet Explorer 8, if an element is inserted dynamically by clicking on a link the first-child style isn't applied until the link loses focus. |
| css.selectors.not π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| css.selectors.not.selector_list | Safari | 9/30/2015 | Firefox | 12/15/2020 | 1903 | |
| css.selectors.nth-child π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Opera: Before Opera 15, Opera does not handle dynamically inserted elements for :nth-child().Opera Android: Before Opera 15, Opera does not handle dynamically inserted elements for :nth-child(). |
| css.selectors.nth-child.of_syntax | Safari | 9/30/2015 | Firefox | 5/9/2023 | 2778 | |
| css.selectors.nth-last-child π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.selectors.nth-last-child.of_syntax | Safari | 9/30/2015 | Firefox | 5/9/2023 | 2778 | |
| css.selectors.nth-last-of-type π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Edge: Before Edge 16, Microsoft Edge treats all unknown elements (such as custom elements) as the same element type.Internet Explorer: Internet Explorer treats all unknown elements (such as custom elements) as the same element type. |
| css.selectors.nth-of-type π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Edge: Before Edge 16, Microsoft Edge treats all unknown elements (such as custom elements) as the same element type.Internet Explorer: Internet Explorer treats all unknown elements (such as custom elements) as the same element type. |
| css.selectors.only-child π | Firefox | 11/29/2005 | Safari | 3/18/2008 | 840 | |
| css.selectors.only-of-type π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Edge: Before Edge 16, Microsoft Edge treats all unknown elements (such as custom elements) as the same element type.Internet Explorer: Internet Explorer treats all unknown elements (such as custom elements) as the same element type. |
| css.selectors.optional π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| css.selectors.out-of-range π | Safari | 7/20/2011 | Firefox | 4/29/2014 | 1014 | |
| css.selectors.part π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.selectors.placeholder π | Firefox | 1/24/2017 | Safari | 3/27/2017 | 62 | |
| css.selectors.placeholder-shown π | Safari | 9/30/2015 | Firefox | 1/24/2017 | 482 | |
| css.selectors.placeholder-shown.non_text_types | Safari | 9/30/2015 | Firefox | 3/13/2018 | 895 | |
| css.selectors.popover-open π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| css.selectors.read-only π | Safari | 6/8/2009 | Firefox | 6/30/2020 | 4040 | |
| css.selectors.read-write π | Safari | 6/8/2009 | Firefox | 6/30/2020 | 4040 | |
| css.selectors.required π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| css.selectors.root π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.scope π | Safari | 10/22/2013 | Firefox | 9/2/2014 | 315 | Firefox: Firefox 55 removes support for <style scoped> but not for the :scope pseudo-class, which is still supported. <style scoped> made it possible to explicitly set up element scopes, but ongoing discussions about the design of this feature as well as lack of other implementations resulted in the decision to remove it.Firefox for Android: Firefox for Android 55 removes support for <style scoped> but not for the :scope pseudo-class, which is still supported. <style scoped> made it possible to explicitly set up element scopes, but ongoing discussions about the design of this feature as well as lack of other implementations resulted in the decision to remove it. |
| css.selectors.scope.dom_api | Safari | 10/22/2013 | Firefox | 9/2/2014 | 315 | |
| css.selectors.selection π | Safari | 10/24/2003 | Firefox | 9/5/2018 | 5430 | |
| css.selectors.slotted π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| css.selectors.state π | Safari | 3/5/2024 | Firefox | 5/14/2024 | 70 | Chrome: Uses a dashed-ident (such as :--foo) instead of :state().Chrome Android: Uses a dashed-ident (such as :--foo) instead of :state().Edge: Uses a dashed-ident (such as :--foo) instead of :state().Quest Browser: Uses a dashed-ident (such as :--foo) instead of :state().Opera: Uses a dashed-ident (such as :--foo) instead of :state().Opera Android: Uses a dashed-ident (such as :--foo) instead of :state().Samsung Internet: Uses a dashed-ident (such as :--foo) instead of :state().WebView Android: Uses a dashed-ident (such as :--foo) instead of :state(). |
| css.selectors.subsequent-sibling π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Internet Explorer: Before Internet Explorer 10, the combinator only works in standards mode. |
| css.selectors.target π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.selectors.target-text π | Firefox | 10/1/2024 | Safari | 12/11/2024 | 71 | |
| css.selectors.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.type.namespaces | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.selectors.universal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.universal.namespaces | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.selectors.user-invalid π | Firefox | 4/19/2021 | Safari | 5/18/2023 | 759 | |
| css.selectors.user-valid π | Firefox | 4/19/2021 | Safari | 5/18/2023 | 759 | |
| css.selectors.valid π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| css.selectors.valid.form | Firefox | 6/5/2012 | Safari | 9/30/2015 | 1212 | |
| css.selectors.visited π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.selectors.visited.not_match_link | Firefox | 3/23/2021 | Safari | 9/20/2021 | 181 | |
| css.selectors.visited.privacy_measures | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| css.selectors.where π | Firefox | 6/30/2020 | Safari | 9/16/2020 | 78 | |
| css.selectors.where.forgiving_selector_list | Safari | 9/16/2020 | Firefox | 10/20/2020 | 34 | |
| css.types.abs π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.acos π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.angle π | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| css.types.angle.deg | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| css.types.angle.grad | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| css.types.angle.rad | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| css.types.angle.turn | Safari | 6/8/2009 | Firefox | 6/5/2012 | 1093 | |
| css.types.angle-percentage π | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| css.types.asin π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.atan π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.atan2 π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.attr π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| css.types.basic-shape π | Safari | 3/27/2017 | Firefox | 6/13/2017 | 78 | |
| css.types.basic-shape.animation | Safari | 3/27/2017 | Firefox | 6/13/2017 | 78 | |
| css.types.basic-shape.circle π | Safari | 3/27/2017 | Firefox | 6/13/2017 | 78 | |
| css.types.basic-shape.ellipse π | Safari | 3/27/2017 | Firefox | 6/13/2017 | 78 | |
| css.types.basic-shape.inset π | Safari | 3/27/2017 | Firefox | 6/13/2017 | 78 | |
| css.types.basic-shape.path π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.types.basic-shape.path.clip-path π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| css.types.basic-shape.path.offset-path π | Firefox | 1/7/2020 | Safari | 9/12/2022 | 979 | |
| css.types.basic-shape.polygon π | Safari | 3/27/2017 | Firefox | 6/13/2017 | 78 | |
| css.types.basic-shape.rect π | Safari | 12/11/2023 | Firefox | 1/23/2024 | 43 | Chrome: Only supported on the offset-path property.Chrome Android: Only supported on the offset-path property.Edge: Only supported on the offset-path property.Opera: Only supported on the offset-path property.Opera Android: Only supported on the offset-path property.Samsung Internet: Only supported on the offset-path property.WebView Android: Only supported on the offset-path property. |
| css.types.basic-shape.xywh π | Safari | 12/11/2023 | Firefox | 1/23/2024 | 43 | Chrome: Only supported on the offset-path property.Chrome Android: Only supported on the offset-path property.Edge: Only supported on the offset-path property.Opera: Only supported on the offset-path property.Opera Android: Only supported on the offset-path property.Samsung Internet: Only supported on the offset-path property.WebView Android: Only supported on the offset-path property. |
| css.types.blend-mode π | Firefox | 6/10/2014 | Safari | 10/16/2014 | 128 | |
| css.types.calc π | Firefox | 10/9/2012 | Safari | 10/22/2013 | 378 | Firefox: Before Firefox 59 calc() is not supported in rgb() and other color functions.Firefox: Before Firefox 57 calc(1*2*3) is not parsed successfully.Firefox: Firefox 57 increased the number of places calc() could substitute another value. See bug 1350857.Firefox for Android: Before Firefox for Android 59 calc() is not supported in rgb() and other color functions.Firefox for Android: Before Firefox for Android 57 calc(1*2*3) is not parsed successfully.Firefox for Android: Firefox for Android 57 increased the number of places calc() could substitute another value. See bug 1350857. |
| css.types.calc.color_component | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| css.types.calc.gradient_color_stops | Safari | 7/25/2012 | Firefox | 2/19/2013 | 209 | |
| css.types.calc.nested | Firefox | 8/2/2016 | Safari | 9/19/2017 | 413 | |
| css.types.calc.number_values | Safari | 7/25/2012 | Firefox | 8/2/2016 | 1469 | |
| css.types.calc-keyword π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.calc-keyword.NaN | Safari | 9/12/2022 | Firefox | 6/6/2023 | 267 | |
| css.types.calc-keyword.e | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.calc-keyword.infinity | Safari | 9/12/2022 | Firefox | 6/6/2023 | 267 | |
| css.types.calc-keyword.pi | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.clamp π | Safari | 3/24/2020 | Firefox | 4/7/2020 | 14 | |
| css.types.color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.color.color π | Safari | 9/20/2021 | Firefox | 5/9/2023 | 596 | Safari: Only supports display-p3 and srgb predefined color profiles.Safari on iOS: Only supports display-p3 and srgb predefined color profiles.WebView on iOS: Only supports display-p3 and srgb predefined color profiles. |
| css.types.color.color.mixed_type_parameters | Safari | 9/20/2021 | Firefox | 5/9/2023 | 596 | |
| css.types.color.color.relative_syntax π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | Safari: Implementation based on older spec version. As a result, calculations with channel values do not work correctly, requiring values to be specified as percentages with units ( %).Safari on iOS: Implementation based on older spec version. As a result, calculations with channel values do not work correctly, requiring values to be specified as percentages with units (%).WebView on iOS: Implementation based on older spec version. As a result, calculations with channel values do not work correctly, requiring values to be specified as percentages with units (%). |
| css.types.color.color-mix π | Safari | 12/13/2022 | Firefox | 5/9/2023 | 147 | |
| css.types.color.currentcolor π | Firefox | 11/29/2005 | Safari | 6/8/2009 | 1287 | |
| css.types.color.hsl π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| css.types.color.hsl.alpha_parameter | Firefox | 3/7/2017 | Safari | 3/25/2019 | 748 | |
| css.types.color.hsl.mixed_type_parameters | Firefox | 1/23/2024 | Safari | 9/16/2024 | 237 | |
| css.types.color.hsl.relative_syntax π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | Chrome: s and l channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require s and l values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Chrome Android: s and l channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require s and l values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Edge: s and l channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require s and l values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Opera: s and l channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require s and l values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Opera Android: s and l channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require s and l values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Safari: Implementation based on older spec version. As a result, calculations with channel values do not work correctly, requiring values to be specified with units (deg for h, % for s and l).Safari on iOS: Implementation based on older spec version. As a result, calculations with channel values do not work correctly, requiring values to be specified with units (deg for h, % for s and l).Samsung Internet: s and l channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require s and l values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).WebView Android: s and l channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require s and l values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).WebView on iOS: Implementation based on older spec version. As a result, calculations with channel values do not work correctly, requiring values to be specified with units (deg for h, % for s and l). |
| css.types.color.hsl.space_separated_parameters | Firefox | 3/7/2017 | Safari | 3/25/2019 | 748 | |
| css.types.color.hwb π | Safari | 9/20/2021 | Firefox | 1/11/2022 | 113 | |
| css.types.color.hwb.mixed_type_parameters | Firefox | 1/23/2024 | Safari | 9/16/2024 | 237 | |
| css.types.color.hwb.relative_syntax π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | Chrome: w and b channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require w and b values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Chrome Android: w and b channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require w and b values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Edge: w and b channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require w and b values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Opera: w and b channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require w and b values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Opera Android: w and b channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require w and b values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).Safari: Implementation based on older spec version. As a result, calculations with channel values do not work correctly, requiring values to be specified with units (deg for h, % for w and b).Safari on iOS: Implementation based on older spec version. As a result, calculations with channel values do not work correctly, requiring values to be specified with units (deg for h, % for w and b).Samsung Internet: w and b channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require w and b values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).WebView Android: w and b channel values incorrectly resolve to numbers between 0-1 rather than 0-100. As a result, channel value calculations require w and b values to be specified as decimal percentage equivalents (e.g. 0.2 for 20%).WebView on iOS: Implementation based on older spec version. As a result, calculations with channel values do not work correctly, requiring values to be specified with units (deg for h, % for w and b). |
| css.types.color.lab π | Safari | 9/20/2021 | Firefox | 5/9/2023 | 596 | |
| css.types.color.lab.mixed_type_parameters | Safari | 12/13/2022 | Firefox | 5/9/2023 | 147 | |
| css.types.color.lab.relative_syntax π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| css.types.color.lch π | Safari | 9/20/2021 | Firefox | 5/9/2023 | 596 | |
| css.types.color.lch.mixed_type_parameters | Safari | 12/13/2022 | Firefox | 5/9/2023 | 147 | |
| css.types.color.lch.relative_syntax π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | Safari: Implementation based on older spec version. As a result, calculations with h channel values do not work correctly, requiring values to be specified with units (deg).Safari on iOS: Implementation based on older spec version. As a result, calculations with h channel values do not work correctly, requiring values to be specified with units (deg).WebView on iOS: Implementation based on older spec version. As a result, calculations with h channel values do not work correctly, requiring values to be specified with units (deg). |
| css.types.color.light-dark π | Firefox | 11/21/2023 | Safari | 5/13/2024 | 174 | |
| css.types.color.named-color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: Internet Explorer 8 and later support gray color keywords spelled with an e ( grey, darkgrey, darkslategrey, dimgrey, lightgrey, and lightslategrey). Internet Explorer 3 to Internet Explorer 7 only support the keywords spelled with a (gray, darkgray, darkslategray, dimgray, lightgray, and lightslategray). |
| css.types.color.named-color.rebeccapurple | Firefox | 10/14/2014 | Safari | 9/30/2015 | 351 | |
| css.types.color.named-color.transparent π | Safari | 3/18/2008 | Firefox | 6/17/2008 | 91 | |
| css.types.color.oklab π | Safari | 3/14/2022 | Firefox | 5/9/2023 | 421 | |
| css.types.color.oklab.mixed_type_parameters | Safari | 12/13/2022 | Firefox | 5/9/2023 | 147 | |
| css.types.color.oklab.relative_syntax π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| css.types.color.oklch π | Safari | 3/14/2022 | Firefox | 5/9/2023 | 421 | |
| css.types.color.oklch.mixed_type_parameters | Safari | 12/13/2022 | Firefox | 5/9/2023 | 147 | |
| css.types.color.oklch.relative_syntax π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | Safari: Implementation based on older spec version. As a result, calculations with h channel values do not work correctly, requiring values to be specified with units (deg).Safari on iOS: Implementation based on older spec version. As a result, calculations with h channel values do not work correctly, requiring values to be specified with units (deg).WebView on iOS: Implementation based on older spec version. As a result, calculations with h channel values do not work correctly, requiring values to be specified with units (deg). |
| css.types.color.rgb π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.color.rgb.alpha_parameter | Firefox | 3/7/2017 | Safari | 3/25/2019 | 748 | |
| css.types.color.rgb.float_values | Firefox | 3/7/2017 | Safari | 3/25/2019 | 748 | |
| css.types.color.rgb.mixed_type_parameters | Firefox | 5/9/2023 | Safari | 9/16/2024 | 496 | |
| css.types.color.rgb.relative_syntax π | Firefox | 7/9/2024 | Safari | 9/16/2024 | 69 | Chrome: Channel values incorrectly resolve to numbers between 0-1 rather than 0-255. As a result, channel value calculations require values to be specified as decimal percentage equivalents (e.g. 0.3 for 30%, which would be equivalent to a 76.5 <number> value). See bug 41490327.Chrome Android: Channel values incorrectly resolve to numbers between 0-1 rather than 0-255. As a result, channel value calculations require values to be specified as decimal percentage equivalents (e.g. 0.3 for 30%, which would be equivalent to a 76.5 <number> value). See bug 41490327.Edge: Channel values incorrectly resolve to numbers between 0-1 rather than 0-255. As a result, channel value calculations require values to be specified as decimal percentage equivalents (e.g. 0.3 for 30%, which would be equivalent to a 76.5 <number> value). See bug 41490327.Opera: Channel values incorrectly resolve to numbers between 0-1 rather than 0-255. As a result, channel value calculations require values to be specified as decimal percentage equivalents (e.g. 0.3 for 30%, which would be equivalent to a 76.5 <number> value). See bug 41490327.Opera Android: Channel values incorrectly resolve to numbers between 0-1 rather than 0-255. As a result, channel value calculations require values to be specified as decimal percentage equivalents (e.g. 0.3 for 30%, which would be equivalent to a 76.5 <number> value). See bug 41490327.Safari: Implementation based on older spec version. As a result, channel value calculations do not work correctly, requiring values to be specified as percentages with units (e.g. 30%, which would be equivalent to a 76.5 <number> value). See bug 267647.Safari on iOS: Implementation based on older spec version. As a result, channel value calculations do not work correctly, requiring values to be specified as percentages with units (e.g. 30%, which would be equivalent to a 76.5 <number> value). See bug 267647.Samsung Internet: Channel values incorrectly resolve to numbers between 0-1 rather than 0-255. As a result, channel value calculations require values to be specified as decimal percentage equivalents (e.g. 0.3 for 30%, which would be equivalent to a 76.5 <number> value). See bug 41490327.WebView Android: Channel values incorrectly resolve to numbers between 0-1 rather than 0-255. As a result, channel value calculations require values to be specified as decimal percentage equivalents (e.g. 0.3 for 30%, which would be equivalent to a 76.5 <number> value). See bug 41490327.WebView on iOS: Implementation based on older spec version. As a result, channel value calculations do not work correctly, requiring values to be specified as percentages with units (e.g. 30%, which would be equivalent to a 76.5 <number> value). See bug 267647. |
| css.types.color.rgb.space_separated_parameters | Firefox | 3/7/2017 | Safari | 3/25/2019 | 748 | |
| css.types.color.rgb_hexadecimal_notation π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.color.rgb_hexadecimal_notation.alpha_hexadecimal_notation | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| css.types.color.system-color π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.color.system-color.accentcolor_accentcolortext π | Firefox | 7/26/2022 | Safari | 5/18/2023 | 296 | Safari: Only supports a fallback: The native color when accent colour (in macOS' appearance panel) is set to 'multicolour'. On iOS falls back to the blue accent colourSafari on iOS: Only supports a fallback: The native color when accent colour (in macOS' appearance panel) is set to 'multicolour'. On iOS falls back to the blue accent colourWebView on iOS: Only supports a fallback: The native color when accent colour (in macOS' appearance panel) is set to 'multicolour'. On iOS falls back to the blue accent colour |
| css.types.cos π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.counter π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| css.types.counters π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| css.types.dimension π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.easing-function π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| css.types.easing-function.cubic-bezier π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| css.types.easing-function.linear-function π | Firefox | 4/11/2023 | Safari | 12/11/2023 | 244 | |
| css.types.easing-function.steps π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| css.types.easing-function.steps.jump | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | |
| css.types.exp π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.filter-function π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.blur π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.brightness π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.contrast π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.drop-shadow π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.grayscale π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.hue-rotate π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.invert π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.opacity π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.saturate π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.filter-function.sepia π | Safari | 7/25/2012 | Firefox | 1/13/2015 | 902 | |
| css.types.flex π | Firefox | 8/11/2015 | Safari | 3/27/2017 | 594 | |
| css.types.global_keywords | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.global_keywords.inherit π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.global_keywords.initial π | Safari | 2/2/2004 | Firefox | 2/19/2013 | 3305 | |
| css.types.global_keywords.revert π | Safari | 3/21/2016 | Firefox | 5/21/2019 | 1156 | |
| css.types.global_keywords.revert-layer π | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| css.types.global_keywords.unset π | Firefox | 2/4/2014 | Safari | 3/21/2016 | 776 | |
| css.types.gradient π | Firefox | 1/21/2010 | Safari | 10/22/2013 | 1370 | Firefox: Gradients are limited to background-image, border-image, and mask-image.Firefox for Android: Gradients are limited to background-image, border-image, and mask-image. |
| css.types.gradient.conic-gradient π | Safari | 3/25/2019 | Firefox | 11/17/2020 | 603 | |
| css.types.gradient.conic-gradient.doubleposition | Safari | 3/25/2019 | Firefox | 11/17/2020 | 603 | |
| css.types.gradient.conic-gradient.hue_interpolation_method | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.conic-gradient.interpolation_color_space | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.linear-gradient π | Firefox | 10/9/2012 | Safari | 10/22/2013 | 378 | Firefox: Since Firefox 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false.Firefox: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Firefox for Android: Since Firefox for Android 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false.Firefox for Android: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Internet Explorer: Internet Explorer 5.5 through 9.0 supported gradients via a proprietary filter: -ms-filter: progid:DXImageTransform.Microsoft.Gradient().Opera: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Opera: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Opera Android: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Opera Android: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Safari: Safari 4 was supporting an experimental -webkit-gradient(linear,β¦) function. It is more limited than the later standard version: you cannot specify both a position and an angle like in linear-gradient(). This old outdated syntax is still supported for compatibility purposes.Safari: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Safari on iOS: Safari on iOS 3.2 was supporting an experimental -webkit-gradient(linear,β¦) function. It is more limited than the later standard version: you cannot specify both a position and an angle like in linear-gradient(). This old outdated syntax is still supported for compatibility purposes.Safari on iOS: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.WebView on iOS: WebView on iOS 3.2 was supporting an experimental -webkit-gradient(linear,β¦) function. It is more limited than the later standard version: you cannot specify both a position and an angle like in linear-gradient(). This old outdated syntax is still supported for compatibility purposes.WebView on iOS: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right. |
| css.types.gradient.linear-gradient.doubleposition | Firefox | 12/11/2018 | Safari | 3/25/2019 | 104 | |
| css.types.gradient.linear-gradient.hue_interpolation_method | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.linear-gradient.interpolation_color_space | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.linear-gradient.interpolation_hints | Safari | 10/22/2013 | Firefox | 2/24/2015 | 490 | |
| css.types.gradient.linear-gradient.premultiplied_gradients | Firefox | 2/24/2015 | Safari | 9/20/2021 | 2400 | |
| css.types.gradient.linear-gradient.to | Firefox | 1/31/2012 | Safari | 10/22/2013 | 630 | |
| css.types.gradient.linear-gradient.unitless_0_angle | Safari | 10/22/2013 | Firefox | 8/8/2017 | 1386 | Firefox: Accepted only in -webkit-linear-gradient() and -moz-linear-gradient(), not linear-gradient().Firefox for Android: Accepted only in -webkit-linear-gradient() and -moz-linear-gradient(), not linear-gradient(). |
| css.types.gradient.radial-gradient π | Firefox | 10/9/2012 | Safari | 10/22/2013 | 378 | Firefox: Since Firefox 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false.Firefox for Android: Since Firefox for Android 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false.Internet Explorer: Internet Explorer 5.5 through 9.0 supported gradients via a proprietary filter: -ms-filter: progid:DXImageTransform.Microsoft.Gradient().Safari: Safari 4 was supporting an experimental -webkit-gradient(radial,β¦) function. This old outdated syntax is still supported for compatibility purposes.Safari on iOS: Safari on iOS 3.2 was supporting an experimental -webkit-gradient(radial,β¦) function. This old outdated syntax is still supported for compatibility purposes.WebView on iOS: WebView on iOS 3.2 was supporting an experimental -webkit-gradient(radial,β¦) function. This old outdated syntax is still supported for compatibility purposes. |
| css.types.gradient.radial-gradient.at | Firefox | 1/31/2012 | Safari | 10/22/2013 | 630 | |
| css.types.gradient.radial-gradient.doubleposition | Firefox | 12/11/2018 | Safari | 3/25/2019 | 104 | |
| css.types.gradient.radial-gradient.hue_interpolation_method | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.radial-gradient.interpolation_color_space | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.radial-gradient.interpolation_hints | Safari | 10/22/2013 | Firefox | 2/24/2015 | 490 | |
| css.types.gradient.radial-gradient.premultiplied_gradients | Firefox | 2/24/2015 | Safari | 9/20/2021 | 2400 | |
| css.types.gradient.repeating-conic-gradient π | Safari | 3/25/2019 | Firefox | 11/17/2020 | 603 | |
| css.types.gradient.repeating-conic-gradient.hue_interpolation_method | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.repeating-conic-gradient.interpolation_color_space | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.repeating-linear-gradient π | Firefox | 10/9/2012 | Safari | 10/22/2013 | 378 | Firefox: Before Firefox 36, gradients weren't applied on the pre-multiplied color space, leading to shades of grey unexpectedly appearing when used with transparency.Firefox: Since Firefox 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false.Firefox: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Firefox for Android: Before Firefox for Android 36, gradients weren't applied on the pre-multiplied color space, leading to shades of grey unexpectedly appearing when used with transparency.Firefox for Android: Since Firefox for Android 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false.Firefox for Android: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Internet Explorer: Internet Explorer 5.5 through 9.0 supported gradients via a proprietary filter: -ms-filter: progid:DXImageTransform.Microsoft.Gradient().Opera: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Opera: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Opera Android: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Opera Android: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Safari: Safari 4 was supporting an experimental -webkit-gradient(linear,β¦) function. It is more limited than the later standard version: you cannot specify both a position and an angle like in repeating-linear-gradient(). This old outdated syntax is still supported for compatibility purposes.Safari: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.Safari on iOS: Safari on iOS 3.2 was supporting an experimental -webkit-gradient(linear,β¦) function. It is more limited than the later standard version: you cannot specify both a position and an angle like in repeating-linear-gradient(). This old outdated syntax is still supported for compatibility purposes.Safari on iOS: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right.WebView on iOS: WebView on iOS 3.2 was supporting an experimental -webkit-gradient(linear,β¦) function. It is more limited than the later standard version: you cannot specify both a position and an angle like in repeating-linear-gradient(). This old outdated syntax is still supported for compatibility purposes.WebView on iOS: Considers <angle> to start to the right, instead of the top. I.e. it considered an angle of 0deg as a direction indicator pointing to the right. |
| css.types.gradient.repeating-linear-gradient.doubleposition | Firefox | 12/11/2018 | Safari | 3/25/2019 | 104 | |
| css.types.gradient.repeating-linear-gradient.hue_interpolation_method | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.repeating-linear-gradient.interpolation_color_space | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.repeating-linear-gradient.interpolation_hints | Safari | 10/22/2013 | Firefox | 2/24/2015 | 490 | |
| css.types.gradient.repeating-linear-gradient.to | Firefox | 1/31/2012 | Safari | 10/22/2013 | 630 | |
| css.types.gradient.repeating-linear-gradient.unitless_0_angle | Safari | 10/22/2013 | Firefox | 8/8/2017 | 1386 | Firefox: Accepted only in -webkit-repeating-linear-gradient() and -moz-repeating-linear-gradient(), not repeating-linear-gradient().Firefox for Android: Accepted only in -webkit-repeating-linear-gradient() and -moz-repeating-linear-gradient(), not repeating-linear-gradient(). |
| css.types.gradient.repeating-radial-gradient π | Firefox | 10/9/2012 | Safari | 10/22/2013 | 378 | Firefox: Before Firefox 36, gradients weren't applied on the pre-multiplied color space, leading to shades of grey unexpectedly appearing when used with transparency.Firefox: Since Firefox 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false.Firefox for Android: Before Firefox 36, gradients weren't applied on the pre-multiplied color space, leading to shades of grey unexpectedly appearing when used with transparency.Firefox for Android: Since Firefox 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false.Safari: Safari 4 was supporting an experimental -webkit-gradient(radial,β¦) function. This old outdated syntax is still supported for compatibility purposes.Safari on iOS: Safari on iOS 3.2 was supporting an experimental -webkit-gradient(radial,β¦) function. This old outdated syntax is still supported for compatibility purposes.WebView on iOS: WebView on iOS 3.2 was supporting an experimental -webkit-gradient(radial,β¦) function. This old outdated syntax is still supported for compatibility purposes. |
| css.types.gradient.repeating-radial-gradient.at | Firefox | 10/9/2012 | Safari | 10/22/2013 | 378 | Firefox: Before Firefox 36, gradients weren't applied on the pre-multiplied color space, leading to shades of grey unexpectedly appearing when used with transparency.Firefox: Since Firefox 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false.Firefox for Android: Before Firefox for Android 36, gradients weren't applied on the pre-multiplied color space, leading to shades of grey unexpectedly appearing when used with transparency.Firefox for Android: Since Firefox for Android 42, the prefixed version of gradients can be disabled by setting layout.css.prefixes.gradients to false. |
| css.types.gradient.repeating-radial-gradient.doubleposition | Firefox | 12/11/2018 | Safari | 3/25/2019 | 104 | |
| css.types.gradient.repeating-radial-gradient.hue_interpolation_method | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.repeating-radial-gradient.interpolation_color_space | Safari | 12/13/2022 | Firefox | 6/11/2024 | 546 | |
| css.types.gradient.repeating-radial-gradient.interpolation_hints | Safari | 10/22/2013 | Firefox | 2/24/2015 | 490 | |
| css.types.hypot π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.image π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.image.image-set π | Firefox | 6/1/2021 | Safari | 9/18/2023 | 839 | Chrome: Support for url images only and x is the only supported resolution unit.Chrome Android: Support for url images only and x is the only supported resolution unit.Edge: Support for url images only and x is the only supported resolution unit.Firefox: The type() function is not supported as an argument to image-set().Firefox for Android: The type() function is not supported as an argument to image-set().Quest Browser: Support for url images only and x is the only supported resolution unit.Opera: Support for url images only and x is the only supported resolution unit.Opera Android: Support for url images only and x is the only supported resolution unit.Safari: The type() function is not supported as an argument to image-set().Safari: The type() function is not supported as an argument to image-set().Safari: Support for url images only and x is the only supported resolution unit.Safari: Support for url images only and x is the only supported resolution unit.Safari on iOS: The type() function is not supported as an argument to image-set().Safari on iOS: The type() function is not supported as an argument to image-set().Safari on iOS: Support for url images only and x is the only supported resolution unit.Safari on iOS: Support for url images only and x is the only supported resolution unit.Samsung Internet: Support for url images only and x is the only supported resolution unit.WebView Android: Support for url images only and x is the only supported resolution unit.WebView on iOS: The type() function is not supported as an argument to image-set().WebView on iOS: The type() function is not supported as an argument to image-set().WebView on iOS: Support for url images only and x is the only supported resolution unit.WebView on iOS: Support for url images only and x is the only supported resolution unit. |
| css.types.integer π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.length.Q | Firefox | 9/20/2016 | Safari | 3/24/2020 | 1281 | |
| css.types.length.cap | Firefox | 2/8/2022 | Safari | 12/11/2023 | 671 | |
| css.types.length.ch | Firefox | 11/9/2004 | Safari | 10/22/2013 | 3269 | Firefox: From Firefox 1 to Firefox 3, ch was the width of the M character.Firefox: From Firefox 1 to Firefox 3, ch did not work with border-width and outline-width CSS properties. |
| css.types.length.container_query_length_units | Safari | 9/12/2022 | Firefox | 2/14/2023 | 155 | |
| css.types.length.em | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.length.ex | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.length.ic | Firefox | 2/8/2022 | Safari | 3/14/2022 | 34 | |
| css.types.length.lh π | Safari | 3/27/2023 | Firefox | 11/21/2023 | 239 | |
| css.types.length.rem | Firefox | 1/21/2010 | Safari | 6/7/2010 | 137 | |
| css.types.length.rlh π | Safari | 3/27/2023 | Firefox | 11/21/2023 | 239 | |
| css.types.length.vb | Safari | 3/14/2022 | Firefox | 5/31/2022 | 78 | |
| css.types.length.vh | Safari | 7/25/2012 | Firefox | 2/19/2013 | 209 | Firefox: Starting with version 21, viewport-percentage lengths are invalid in @page.Firefox for Android: Starting with version 21, viewport-percentage lengths are invalid in @page. |
| css.types.length.vi | Safari | 3/14/2022 | Firefox | 5/31/2022 | 78 | |
| css.types.length.viewport_percentage_units_dynamic | Safari | 3/14/2022 | Firefox | 5/31/2022 | 78 | |
| css.types.length.viewport_percentage_units_large | Safari | 3/14/2022 | Firefox | 5/31/2022 | 78 | |
| css.types.length.viewport_percentage_units_small | Safari | 3/14/2022 | Firefox | 5/31/2022 | 78 | |
| css.types.length.vmax | Firefox | 2/19/2013 | Safari | 10/22/2013 | 245 | Firefox: Starting with version 21, viewport-percentage lengths are invalid in @page.Firefox for Android: Starting with version 21, viewport-percentage lengths are invalid in @page. |
| css.types.length.vmin | Firefox | 2/19/2013 | Safari | 10/22/2013 | 245 | Firefox: Starting with version 21, viewport-percentage lengths are invalid in @page.Firefox for Android: Starting with version 21, viewport-percentage lengths are invalid in @page. |
| css.types.length.vw | Safari | 7/25/2012 | Firefox | 2/19/2013 | 209 | Firefox: Starting with version 21, viewport-percentage lengths are invalid in @page.Firefox for Android: Starting with version 21, viewport-percentage lengths are invalid in @page. |
| css.types.length-percentage π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.line-style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.log π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.max π | Safari | 4/12/2018 | Firefox | 4/7/2020 | 726 | |
| css.types.min π | Safari | 4/12/2018 | Firefox | 4/7/2020 | 726 | |
| css.types.mod π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.number π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.number.scientific_notation | Firefox | 4/29/2014 | Safari | 3/27/2017 | 1063 | |
| css.types.overflow π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: From version 4 to 6, Internet Explorer enlarges an element with visible (default value) to fit the content inside it. |
| css.types.overflow.clip | Firefox | 9/22/2020 | Safari | 9/12/2022 | 720 | |
| css.types.overflow.overlay | Safari | 9/17/2018 | Firefox | 4/11/2023 | 1667 | Chrome: Before version 114, the overlay keyword caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space. From version 114, the keyword aliases to the standard auto keyword. See bug 40444262.Chrome Android: Before version 114, the overlay keyword caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space. From version 114, the keyword aliases to the standard auto keyword. See bug 40444262.Edge: Before version 114, the overlay keyword caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space. From version 114, the keyword aliases to the standard auto keyword. See bug 40444262.Quest Browser: Before version false, the overlay keyword caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space. From version false, the keyword aliases to the standard auto keyword. See bug 40444262.Opera: Before version 100, the overlay keyword caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space. From version 100, the keyword aliases to the standard auto keyword. See bug 40444262.Safari: Before version 12, the overlay keyword caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space. From version 12, the keyword aliases to the standard auto keyword. See bug 189811.Safari on iOS: Before version 12, the overlay keyword caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space. From version 12, the keyword aliases to the standard auto keyword. See bug 189811.WebView Android: Before version 114, the overlay keyword caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space. From version 114, the keyword aliases to the standard auto keyword. See bug 40444262.WebView on iOS: Before version 12, the overlay keyword caused non-standard behavior, allowing scrollbars to overlay content without taking up layout space. From version 12, the keyword aliases to the standard auto keyword. See bug 189811. |
| css.types.percentage π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.position π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.position.four_value_syntax | Firefox | 6/5/2012 | Safari | 10/22/2013 | 504 | |
| css.types.position.keyword_value_syntax | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.pow π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.ratio π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| css.types.ray π | Safari | 9/12/2022 | Firefox | 1/23/2024 | 498 | |
| css.types.ray.position | Safari | 12/11/2023 | Firefox | 1/23/2024 | 43 | |
| css.types.ray.size | Safari | 9/18/2023 | Firefox | 1/23/2024 | 127 | |
| css.types.rem π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.resolution π | Firefox | 11/8/2011 | Safari | 9/12/2022 | 3961 | |
| css.types.resolution.dpcm | Firefox | 11/8/2011 | Safari | 9/12/2022 | 3961 | |
| css.types.resolution.dpi | Firefox | 11/8/2011 | Safari | 9/12/2022 | 3961 | |
| css.types.resolution.dppx | Firefox | 10/9/2012 | Safari | 9/12/2022 | 3625 | |
| css.types.resolution.x | Firefox | 9/5/2018 | Safari | 9/12/2022 | 1468 | |
| css.types.round π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.shape π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| css.types.shape.rect | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | Internet Explorer: For Internet Explorer versions 5.5 through 7, the rect() function uses spaces (instead of commas) to separate parameters. For Internet Explorer 8 and later versions, only the standard comma-separated syntax is supported. |
| css.types.sign π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.sin π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.sqrt π | Safari | 3/14/2022 | Firefox | 9/26/2023 | 561 | |
| css.types.string π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.string.unicode_escaped_characters | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| css.types.tan π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| css.types.time π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | |
| css.types.transform-function π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Internet Explorer: Internet Explorer 9 supports 2D but not 3D transforms. In version 9, mixing 2D and 3D transform functions invalidates the entire property. |
| css.types.transform-function.matrix π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.matrix3d π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.transform-function.perspective π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.transform-function.perspective.none π | Firefox | 10/5/2021 | Safari | 3/14/2022 | 160 | |
| css.types.transform-function.rotate π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.rotate3d π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.transform-function.rotateX π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.transform-function.rotateY π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.transform-function.rotateZ π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.transform-function.scale π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.scale3d π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.transform-function.scaleX π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.scaleY π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.scaleZ π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.transform-function.skew π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Firefox: Firefox 14 removed experimental support for skew(), but it was reintroduced in Firefox 15. |
| css.types.transform-function.skewX π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.skewY π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.translate π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.translate3d π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.transform-function.translateX π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.translateY π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| css.types.transform-function.translateZ π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| css.types.url π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 |
| API | First Browser | Date | Last Browser | Date | Days | Notes |
|---|---|---|---|---|---|---|
| html.elements.a π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Starting with Firefox 41, <a> without href attribute is no longer classified as interactive content: clicking it inside <label> will activate labelled content (bug 1167816).Firefox for Android: Starting with Firefox for Android 41, <a> without href attribute is no longer classified as interactive content: clicking it inside <label> will activate labelled content (bug 1167816). |
| html.elements.a.charset π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.a.download π | Firefox | 4/2/2013 | Safari | 3/27/2017 | 1455 | Chrome: Starting in Chrome 65, cross-origin downloads are not supported on the <a> element.Chrome Android: Starting in Chrome Android 65, cross-origin downloads are not supported on the <a> element.Edge: Starting in Edge 79, cross-origin downloads are not supported on the <a> element.Edge: Until Edge 14 (build 14357), attempting to download data URIs caused Edge to crash (bug 7160092).Edge: Edge 17 or older didn't follow the attributes' value to determine filename (bug 7260192).Firefox for Android: The attribute's filename value only affects the suggested file name for the blob: and data: URI schemes. Other schemes ignore the suggested filename. See bug 1845642.Quest Browser: Starting in Quest Browser 5.0, cross-origin downloads are not supported on the <a> element.Opera: Starting in Opera 52, cross-origin downloads are not supported on the <a> element.Opera Android: Starting in Opera Android 47, cross-origin downloads are not supported on the <a> element.Samsung Internet: Starting in Samsung Internet 9.0, cross-origin downloads are not supported on the <a> element.WebView Android: Starting in WebView Android 65, cross-origin downloads are not supported on the <a> element. |
| html.elements.a.href π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.a.href.href_top | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| html.elements.a.hreflang π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.a.implicit_noopener | Safari | 3/25/2019 | Firefox | 7/28/2020 | 491 | |
| html.elements.a.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.a.ping π | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | Firefox: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104.Firefox for Android: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104. |
| html.elements.a.referrerpolicy π | Firefox | 11/15/2016 | Safari | 9/16/2020 | 1401 | |
| html.elements.a.rel π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.a.rel.noopener π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | Firefox: Before Firefox 63, rel="noopener" created windows with all features disabled by default. Starting with Firefox 63, these windows have the same features enabled by default as any other window.Firefox for Android: Before Firefox for Android 63, rel="noopener" created windows with all features disabled by default. Starting with Firefox for Android 63, these windows have the same features enabled by default as any other window. |
| html.elements.a.rel.noreferrer π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | Internet Explorer: Only supported in IE11 in later versions of Windows 10 (creators update). (Per caniuse.com.) |
| html.elements.a.rev π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.a.target π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.a.text_fragments | Safari | 10/24/2022 | Firefox | 10/1/2024 | 708 | |
| html.elements.a.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.abbr π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface. |
| html.elements.acronym π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.address π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.area π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.area.alt π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.area.coords π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.area.download π | Firefox | 4/2/2013 | Safari | 3/27/2017 | 1455 | |
| html.elements.area.href π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.area.implicit_noopener | Safari | 3/25/2019 | Firefox | 7/28/2020 | 491 | |
| html.elements.area.nohref π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.area.ping π | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | Firefox: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104.Firefox for Android: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104. |
| html.elements.area.referrerpolicy π | Firefox | 11/15/2016 | Safari | 9/16/2020 | 1401 | |
| html.elements.area.rel π | Safari | 6/7/2010 | Firefox | 6/10/2014 | 1464 | |
| html.elements.area.rel.noopener π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | Firefox: Before Firefox 63, rel="noopener" created windows with all features disabled by default. Starting with Firefox 63, these windows have the same features enabled by default as any other window.Firefox for Android: Before Firefox for Android 63, rel="noopener" created windows with all features disabled by default. Starting with Firefox for Android 63, these windows have the same features enabled by default as any other window. |
| html.elements.area.rel.noreferrer π | Safari | 6/7/2010 | Firefox | 10/14/2014 | 1590 | Internet Explorer: Only supported in IE11 in later versions of Windows 10 (creators update). (Per caniuse.com.) |
| html.elements.area.shape π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.area.target π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.article π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.aside π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.audio π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Firefox: For Firefox to play audio, the server must serve the file using the correct MIME type.Firefox for Android: For Firefox for Android to play audio, the server must serve the file using the correct MIME type. |
| html.elements.audio.controls π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.audio.crossorigin π | Safari | 9/20/2016 | Firefox | 3/10/2020 | 1267 | Firefox: With crossorigin="use-credentials", cookies aren't sent during seek. See bug 1532722.Firefox for Android: With crossorigin="use-credentials", cookies aren't sent during seek. See bug 1532722. |
| html.elements.audio.loop π | Safari | 3/18/2008 | Firefox | 3/13/2012 | 1456 | |
| html.elements.audio.muted π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| html.elements.audio.preload π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | Chrome: Defaults to metadata in Chrome 64.Chrome Android: Defaults to metadata in Chrome Android 64.Quest Browser: Defaults to metadata in Quest Browser 5.0.Opera: Defaults to metadata in Opera 51.Opera Android: Defaults to metadata in Opera 51.Samsung Internet: Defaults to metadata in Samsung Internet 9.0.WebView Android: Defaults to metadata in Chrome 64. |
| html.elements.audio.src π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.b π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface. |
| html.elements.base π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Internet Explorer: Before Internet Explorer 7, <base> can be positioned anywhere in the document and the nearest value of <base> is used. |
| html.elements.base.href π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.base.href.forbid_data_javascript_urls | Safari | 3/24/2020 | Firefox | 6/11/2024 | 1540 | |
| html.elements.base.href.relative_url | Safari | 10/26/2007 | Firefox | 3/22/2011 | 1243 | |
| html.elements.base.target π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.bdi π | Firefox | 1/31/2012 | Safari | 7/25/2012 | 176 | |
| html.elements.bdo π | Safari | 6/8/2009 | Firefox | 1/31/2012 | 967 | |
| html.elements.big π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.blockquote π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.blockquote.cite | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.body π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.body.alink | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.body.background | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.body.bgcolor | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.body.bottommargin | Safari | 6/8/2009 | Firefox | 1/13/2015 | 2045 | Firefox: Before Firefox 35, it was supported in Quirks Mode only.Firefox for Android: Before Firefox for Android 35, it was supported in Quirks Mode only. |
| html.elements.body.leftmargin | Safari | 6/8/2009 | Firefox | 1/13/2015 | 2045 | Firefox: Before Firefox 35, it was supported in Quirks Mode only.Firefox for Android: Before Firefox for Android 35, it was supported in Quirks Mode only. |
| html.elements.body.link | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.body.rightmargin | Safari | 6/8/2009 | Firefox | 1/13/2015 | 2045 | Firefox: Before Firefox 35, it was supported in Quirks Mode only.Firefox for Android: Before Firefox for Android 35, it was supported in Quirks Mode only. |
| html.elements.body.text | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.body.topmargin | Safari | 6/8/2009 | Firefox | 1/13/2015 | 2045 | Firefox: Before Firefox 35, it was supported in Quirks Mode only.Firefox for Android: Before Firefox for Android 35, it was supported in Quirks Mode only. |
| html.elements.body.vlink | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.br π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.br.clear | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.button π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.button.disabled π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.button.form | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.button.formaction | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.button.formenctype | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.button.formmethod | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.button.formnovalidate | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.button.formtarget | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.button.name | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.button.popovertarget π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| html.elements.button.popovertargetaction π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| html.elements.button.type | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.button.value | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.canvas π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | Firefox: Before Firefox 5, the canvas width and height were signed integers instead of unsigned integers.Firefox: Before Firefox 6, a <canvas> element with a zero width or height would be rendered as if it had default dimensions.Firefox: Before Firefox 12, if JavaScript is disabled, the <canvas> element was being rendered instead of showing the fallback content as per the specification. Since then, the fallback content is rendered instead.Firefox for Android: Before Firefox for Android 5, the canvas width and height were signed integers instead of unsigned integers.Firefox for Android: Before Firefox for Android 6, a <canvas> element with a zero width or height would be rendered as if it had default dimensions.Firefox for Android: Before Firefox for Android 14, if JavaScript is disabled, the <canvas> element was being rendered instead of showing the fallback content as per the specification. Since then, the fallback content is rendered instead.Safari: Although early versions of Apple's Safari browser don't require the closing tag, the specification indicates that it is required, so you should be sure to include it for broadest compatibility. Before version 2, Safari will render the content of the fallback in addition to the canvas itself unless you use CSS tricks to mask it. |
| html.elements.canvas.height π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | Firefox: Before Firefox 5, the canvas width and height were signed integers instead of unsigned integers.Firefox: Before Firefox 6, a <canvas> element with a zero width or height would be rendered as if it had default dimensions.Firefox: Before Firefox 12, if JavaScript is disabled, the <canvas> element was being rendered instead of showing the fallback content as per the specification. Since then, the fallback content is rendered instead.Firefox for Android: Before Firefox for Android 5, the canvas width and height were signed integers instead of unsigned integers.Firefox for Android: Before Firefox for Android 6, a <canvas> element with a zero width or height would be rendered as if it had default dimensions.Firefox for Android: Before Firefox for Android 14, if JavaScript is disabled, the <canvas> element was being rendered instead of showing the fallback content as per the specification. Since then, the fallback content is rendered instead.Safari: Although early versions of Apple's Safari browser don't require the closing tag, the specification indicates that it is required, so you should be sure to include it for broadest compatibility. Before version 2, Safari will render the content of the fallback in addition to the canvas itself unless you use CSS tricks to mask it. |
| html.elements.canvas.width π | Safari | 4/29/2005 | Firefox | 11/29/2005 | 214 | Firefox: Before Firefox 5, the canvas width and height were signed integers instead of unsigned integers.Firefox: Before Firefox 6, a <canvas> element with a zero width or height would be rendered as if it had default dimensions.Firefox: Before Firefox 12, if JavaScript is disabled, the <canvas> element was being rendered instead of showing the fallback content as per the specification. Since then, the fallback content is rendered instead.Firefox for Android: Before Firefox for Android 5, the canvas width and height were signed integers instead of unsigned integers.Firefox for Android: Before Firefox for Android 6, a <canvas> element with a zero width or height would be rendered as if it had default dimensions.Firefox for Android: Before Firefox for Android 14, if JavaScript is disabled, the <canvas> element was being rendered instead of showing the fallback content as per the specification. Since then, the fallback content is rendered instead.Safari: Although early versions of Apple's Safari browser don't require the closing tag, the specification indicates that it is required, so you should be sure to include it for broadest compatibility. Before version 2, Safari will render the content of the fallback in addition to the canvas itself unless you use CSS tricks to mask it. |
| html.elements.caption π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.caption.align | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.center π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface.Firefox for Android: Before Firefox for Android 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface. |
| html.elements.cite π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.code π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.col π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.col.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.col.span π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.col.valign π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.col.width π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.colgroup π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.colgroup.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.colgroup.span π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.colgroup.valign π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.colgroup.width π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.data π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| html.elements.data.value π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| html.elements.datalist π | Safari | 3/25/2019 | Firefox | 2/14/2023 | 1422 | Firefox: The date and time input types are not supported.Firefox: The <datalist> element will only create a dropdown for textual types, such as text, search, url, tel, email and number. The date, time, range and color types are not supported.Firefox for Android: The dropdown menu containing available options does not appear. See bug 1535985. |
| html.elements.dd π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 4, this element was implemented using the HTMLSpanElement interface instead of HTMLElement. |
| html.elements.del π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.del.cite | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.del.datetime | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.details π | Safari | 7/25/2012 | Firefox | 9/20/2016 | 1518 | Firefox: Before Firefox 57, there was a bug meaning that <details> elements can't be made open by default using the open attribute if they have a CSS animation active on them.Firefox for Android: There is a bug meaning that <details> elements can't be made open by default using the open attribute if they have a CSS animation active on them. |
| html.elements.details.name | Safari | 12/11/2023 | Firefox | 9/3/2024 | 267 | |
| html.elements.details.open | Safari | 7/25/2012 | Firefox | 9/20/2016 | 1518 | |
| html.elements.dfn π | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | |
| html.elements.dialog π | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| html.elements.dialog.open | Firefox | 3/8/2022 | Safari | 3/14/2022 | 6 | |
| html.elements.dir π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.dir.compact | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.div π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.div.align | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.dl π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.dt π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.em π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.embed π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.embed.align π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.embed.height π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.embed.name π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.embed.src π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.embed.type π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.embed.width π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.fieldset π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Chrome: Before version 86, this element did not support flexbox and grid layouts within this element. See bug 41027853.Chrome Android: Before version 86, this element did not support flexbox and grid layouts within this element. See bug 41027853.Edge: Before version 86, this element did not support flexbox and grid layouts within this element. See bug 4511145.Quest Browser: Before version 12.0, this element did not support flexbox and grid layouts within this element. See bug 41027853.Samsung Internet: Before version 14.0, this element did not support flexbox and grid layouts within this element. See bug 41027853.WebView Android: Before version 86, this element did not support flexbox and grid layouts within this element. See bug 41027853. |
| html.elements.fieldset.disabled π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | Edge: Does not work with nested fieldsets. For example: <fieldset disabled><fieldset><!--Still enabled--></fieldset></fieldset>Internet Explorer: Not all form control descendants of a disabled fieldset are properly disabled in IE11; see IE bug 817488: input[type='file'] not disabled inside disabled fieldset and IE bug 962368: Can still edit input[type='text'] within fieldset[disabled]. |
| html.elements.fieldset.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.fieldset.name π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| html.elements.figcaption π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.figure π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.font π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.font.color | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.font.face | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.font.size | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.footer π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.form.accept-charset π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.form.action π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.form.autocomplete π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | Chrome: The Google Chrome UI for auto-complete request varies, depending on whether autocomplete is set to off on <input> elements as well as their form. Specifically, when a form has autocomplete set to off and its <input> element's autocomplete attribute is not set, then if the user asks for autofill suggestions for the <input> element, Chrome might display a message saying 'autocomplete has been disabled for this form.' On the other hand, if both the form and the input element have autocomplete set to off, the browser will not display that message. For this reason, you should set autocomplete to off for each <input> that has custom auto-completion.Chrome Android: The Chrome Android UI for auto-complete request varies, depending on whether autocomplete is set to off on <input> elements as well as their form. Specifically, when a form has autocomplete set to off and its <input> element's autocomplete attribute is not set, then if the user asks for autofill suggestions for the <input> element, Chrome Android might display a message saying 'autocomplete has been disabled for this form.' On the other hand, if both the form and the input element have autocomplete set to off, the browser will not display that message. For this reason, you should set autocomplete to off for each <input> that has custom auto-completion.Quest Browser: The Quest Browser UI for auto-complete request varies, depending on whether autocomplete is set to off on <input> elements as well as their form. Specifically, when a form has autocomplete set to off and its <input> element's autocomplete attribute is not set, then if the user asks for autofill suggestions for the <input> element, Quest Browser might display a message saying 'autocomplete has been disabled for this form.' On the other hand, if both the form and the input element have autocomplete set to off, the browser will not display that message. For this reason, you should set autocomplete to off for each <input> that has custom auto-completion.Opera: The Opera UI for auto-complete request varies, depending on whether autocomplete is set to off on <input> elements as well as their form. Specifically, when a form has autocomplete set to off and its <input> element's autocomplete attribute is not set, then if the user asks for autofill suggestions for the <input> element, Opera might display a message saying 'autocomplete has been disabled for this form.' On the other hand, if both the form and the input element have autocomplete set to off, the browser will not display that message. For this reason, you should set autocomplete to off for each <input> that has custom auto-completion.Opera Android: The Opera Android UI for auto-complete request varies, depending on whether autocomplete is set to off on <input> elements as well as their form. Specifically, when a form has autocomplete set to off and its <input> element's autocomplete attribute is not set, then if the user asks for autofill suggestions for the <input> element, Opera Android might display a message saying 'autocomplete has been disabled for this form.' On the other hand, if both the form and the input element have autocomplete set to off, the browser will not display that message. For this reason, you should set autocomplete to off for each <input> that has custom auto-completion.Samsung Internet: The Samsung Internet UI for auto-complete request varies, depending on whether autocomplete is set to off on <input> elements as well as their form. Specifically, when a form has autocomplete set to off and its <input> element's autocomplete attribute is not set, then if the user asks for autofill suggestions for the <input> element, Samsung Internet might display a message saying 'autocomplete has been disabled for this form.' On the other hand, if both the form and the input element have autocomplete set to off, the browser will not display that message. For this reason, you should set autocomplete to off for each <input> that has custom auto-completion.WebView Android: The WebView Android UI for auto-complete request varies, depending on whether autocomplete is set to off on <input> elements as well as their form. Specifically, when a form has autocomplete set to off and its <input> element's autocomplete attribute is not set, then if the user asks for autofill suggestions for the <input> element, WebView Android might display a message saying 'autocomplete has been disabled for this form.' On the other hand, if both the form and the input element have autocomplete set to off, the browser will not display that message. For this reason, you should set autocomplete to off for each <input> that has custom auto-completion. |
| html.elements.form.autocomplete.one-time-code | Safari | 9/17/2018 | Firefox | 1/17/2023 | 1583 | |
| html.elements.form.enctype π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.form.method π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.form.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.form.novalidate π | Firefox | 3/22/2011 | Safari | 3/27/2017 | 2197 | |
| html.elements.form.rel π | Safari | 3/14/2022 | Firefox | 3/14/2023 | 365 | |
| html.elements.form.target π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frame π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frame.frameborder | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frame.marginheight | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frame.marginwidth | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frame.name | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frame.noresize | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frame.scrolling | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frame.src | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frameset π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frameset.cols | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.frameset.rows | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.h1 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.h2 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.h3 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.h4 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.h5 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.h6 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.head π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.header π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.hgroup π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.hr π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.hr.align | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.hr.color | Firefox | 11/9/2004 | Safari | 3/27/2017 | 4521 | |
| html.elements.hr.hr_in_select | Safari | 9/18/2023 | Firefox | 1/23/2024 | 127 | Chrome: Only exposes the <hr> visually in the page when the menu is expanded (arrowing within the collapsed menu does not show them).Chrome: Does not expose the <hr> within the accessibility tree.Edge: Only exposes the <hr> visually in the page when the menu is expanded (arrowing within the collapsed menu does not show them).Edge: Does not expose the <hr> within the accessibility tree.Firefox: Does not expose the <hr> within the accessibility tree.Firefox for Android: Does not expose the <hr> within the accessibility tree.Opera: Only exposes the <hr> visually in the page when the menu is expanded (arrowing within the collapsed menu does not show them).Opera: Does not expose the <hr> within the accessibility tree.Safari: Does not expose the <hr> within the accessibility tree.Safari on iOS: Does not expose the <hr> within the accessibility tree.WebView on iOS: Does not expose the <hr> within the accessibility tree. |
| html.elements.hr.noshade | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.hr.size | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.hr.width | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.html π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.html.version π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.html.xmlns | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.i π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.iframe π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: The resize CSS property doesn't have any effect on this element due to bug 680823.Firefox for Android: The resize CSS property doesn't have any effect on this element due to bug 680823.Safari: Safari has a bug that prevents iframes from loading if the iframe element was hidden when added to the page. iframeElement.src = iframeElement.src should cause it to load the iframe.Safari on iOS: Safari on iOS has a bug that prevents iframes from loading if the iframe element was hidden when added to the page. iframeElement.src = iframeElement.src should cause it to load the iframe.WebView on iOS: WebView on iOS has a bug that prevents iframes from loading if the iframe element was hidden when added to the page. iframeElement.src = iframeElement.src should cause it to load the iframe. |
| html.elements.iframe.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.iframe.allow π | Safari | 4/12/2018 | Firefox | 3/10/2020 | 698 | |
| html.elements.iframe.allow.camera π | Safari | 4/12/2018 | Firefox | 3/10/2020 | 698 | |
| html.elements.iframe.allow.display-capture π | Safari | 9/19/2019 | Firefox | 3/10/2020 | 173 | |
| html.elements.iframe.allow.microphone π | Safari | 4/12/2018 | Firefox | 3/10/2020 | 698 | |
| html.elements.iframe.allow.screen-wake-lock π | Safari | 3/27/2023 | Firefox | 5/14/2024 | 414 | |
| html.elements.iframe.allowfullscreen π | Firefox | 1/8/2013 | Safari | 3/27/2017 | 1539 | Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.WebView on iOS: Only available on iPad, not on iPhone.WebView on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games. |
| html.elements.iframe.frameborder π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.iframe.height π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.iframe.loading π | Safari | 3/27/2023 | Firefox | 12/19/2023 | 267 | |
| html.elements.iframe.longdesc π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.iframe.marginheight π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.iframe.marginwidth π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.iframe.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.iframe.referrerpolicy π | Firefox | 11/15/2016 | Safari | 9/16/2020 | 1401 | |
| html.elements.iframe.sandbox π | Safari | 6/7/2010 | Firefox | 11/20/2012 | 897 | |
| html.elements.iframe.sandbox.allow-downloads π | Firefox | 10/20/2020 | Safari | 9/18/2023 | 1063 | |
| html.elements.iframe.sandbox.allow-forms π | Safari | 6/7/2010 | Firefox | 9/20/2016 | 2297 | |
| html.elements.iframe.sandbox.allow-modals π | Firefox | 9/20/2016 | Safari | 4/12/2018 | 569 | |
| html.elements.iframe.sandbox.allow-pointer-lock π | Firefox | 9/20/2016 | Safari | 3/27/2017 | 188 | |
| html.elements.iframe.sandbox.allow-popups π | Safari | 7/25/2012 | Firefox | 3/18/2014 | 601 | |
| html.elements.iframe.sandbox.allow-popups-to-escape-sandbox π | Firefox | 9/20/2016 | Safari | 4/12/2018 | 569 | |
| html.elements.iframe.sandbox.allow-same-origin π | Safari | 6/7/2010 | Firefox | 9/20/2016 | 2297 | Chrome: Chrome 70 and earlier block script execution without allow-scripts, even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.Chrome Android: Chrome Android 70 and earlier block script execution without allow-scripts, even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.Edge: Edge 79 and earlier block script execution without allow-scripts, even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.Quest Browser: Quest Browser 6.0 and earlier block script execution without allow-scripts, even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.Opera: Opera 57 and earlier block script execution without allow-scripts, even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.Opera Android: Opera Android 49 and earlier block script execution without allow-scripts, even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.Safari: Safari blocks script execution without allow-scripts even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.Safari on iOS: Safari blocks script execution without allow-scripts even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.Samsung Internet: Samsung Internet 10.0 and earlier block script execution without allow-scripts, even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.WebView Android: WebView Android 70 and earlier block script execution without allow-scripts, even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution.WebView on iOS: Safari blocks script execution without allow-scripts even if allow-same-origin is set. For example, any bound handlers for click events of nodes inside an iframe throw an error for blocked script execution. |
| html.elements.iframe.sandbox.allow-scripts π | Safari | 6/7/2010 | Firefox | 9/20/2016 | 2297 | |
| html.elements.iframe.sandbox.allow-storage-access-by-user-activation | Safari | 4/12/2018 | Firefox | 1/29/2019 | 292 | |
| html.elements.iframe.sandbox.allow-top-navigation π | Safari | 6/7/2010 | Firefox | 9/20/2016 | 2297 | |
| html.elements.iframe.sandbox.allow-top-navigation-by-user-activation π | Safari | 4/12/2018 | Firefox | 7/28/2020 | 838 | |
| html.elements.iframe.sandbox.allow-top-navigation-to-custom-protocols π | Firefox | 5/31/2022 | Safari | 9/12/2022 | 104 | |
| html.elements.iframe.scrolling π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.iframe.src π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.iframe.srcdoc π | Safari | 7/25/2012 | Firefox | 10/29/2013 | 461 | |
| html.elements.iframe.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.img.align π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.alt π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.aspect_ratio_computed_from_attributes | Firefox | 12/10/2019 | Safari | 9/20/2021 | 650 | Safari: Safari doesn't preserve space for images without a valid src, which may disrupt layouts that rely on lazy loading (see bug 224197).Safari on iOS: Safari on iOS doesn't preserve space for images without a valid src, which may disrupt layouts that rely on lazy loading (see bug 224197).WebView on iOS: WebView on iOS doesn't preserve space for images without a valid src, which may disrupt layouts that rely on lazy loading (see bug 224197). |
| html.elements.img.border π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.crossorigin π | Firefox | 11/8/2011 | Safari | 7/25/2012 | 260 | |
| html.elements.img.decoding π | Safari | 4/12/2018 | Firefox | 10/23/2018 | 194 | |
| html.elements.img.fetchpriority π | Safari | 12/11/2023 | Firefox | 10/29/2024 | 323 | |
| html.elements.img.height π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.hspace π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.ismap π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.loading π | Firefox | 4/7/2020 | Safari | 3/14/2022 | 706 | |
| html.elements.img.longdesc π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.referrerpolicy π | Firefox | 11/15/2016 | Safari | 9/16/2020 | 1401 | |
| html.elements.img.sizes π | Firefox | 5/12/2015 | Safari | 3/21/2016 | 314 | |
| html.elements.img.src π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.img.srcset π | Safari | 10/16/2014 | Firefox | 5/12/2015 | 208 | |
| html.elements.img.usemap π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.usemap.case_sensitive | Firefox | 1/24/2017 | Safari | 9/19/2017 | 238 | |
| html.elements.img.vspace π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.img.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.input π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 89, manipulating the content of <input> elements using Document.execCommand() commands requires workarounds (see bug 1220696).Firefox for Android: Before Firefox for Android 89, manipulating the content of <input> elements using Document.execCommand() commands requires workarounds (see bug 1220696). |
| html.elements.input.accept π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.align π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.alt π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.autocomplete π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| html.elements.input.checked π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.dirname π | Safari | 7/25/2012 | Firefox | 8/1/2023 | 4024 | |
| html.elements.input.disabled π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.form π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.formaction π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.input.formenctype π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.input.formmethod π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.input.formnovalidate π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.input.formtarget π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.input.list π | Firefox | 3/22/2011 | Safari | 3/25/2019 | 2925 | |
| html.elements.input.max π | Safari | 6/7/2010 | Firefox | 10/9/2012 | 855 | |
| html.elements.input.maxlength π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.min π | Safari | 6/7/2010 | Firefox | 10/9/2012 | 855 | |
| html.elements.input.minlength π | Firefox | 1/24/2017 | Safari | 3/27/2017 | 62 | |
| html.elements.input.multiple π | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| html.elements.input.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.pattern π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.input.placeholder π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| html.elements.input.popovertarget π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| html.elements.input.popovertargetaction π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| html.elements.input.readonly π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.required π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.input.size π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.src π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.step π | Safari | 6/7/2010 | Firefox | 10/9/2012 | 855 | |
| html.elements.input.type_button π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.type_checkbox π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.type_color π | Firefox | 4/29/2014 | Safari | 3/25/2019 | 1791 | Firefox for Android: Firefox for Android doesn't allow the user to choose a custom color, only one of the predefined ones. |
| html.elements.input.type_date π | Firefox | 11/14/2017 | Safari | 4/26/2021 | 1259 | |
| html.elements.input.type_datetime-local π | Safari | 4/26/2021 | Firefox | 10/5/2021 | 162 | Firefox: Firefox only displays a date picker and does not display a time picker, see bug 1726108.Safari: Safari only displays a date picker and does not display a time picker. |
| html.elements.input.type_email π | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | Safari on iOS: Doesn't do validation, but instead offers a custom 'email' keyboard, which is designed to make entering email addresses easier.Safari on iOS: The custom 'email' keyboard does not provide a comma key, so users cannot enter multiple email addresses.Safari on iOS: Automatically applies a default style of opacity: 0.4 to disable textual <input> elements, including those of type 'email'. Other major browsers don't currently share this particular default style.WebView on iOS: Doesn't do validation, but instead offers a custom 'email' keyboard, which is designed to make entering email addresses easier.WebView on iOS: The custom 'email' keyboard does not provide a comma key, so users cannot enter multiple email addresses.WebView on iOS: Automatically applies a default style of opacity: 0.4 to disable textual <input> elements, including those of type 'email'. Other major browsers don't currently share this particular default style. |
| html.elements.input.type_file π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: You can set as well as get the value of HTMLInputElement.files in all modern browsers; this was most recently added to Firefox, in version 57 (see bug 1384030). |
| html.elements.input.type_hidden π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.type_image π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.type_number π | Safari | 7/20/2011 | Firefox | 4/29/2014 | 1014 | Chrome: Prevents users from typing non-numeric content.Chrome Android: Prevents users from typing non-numeric content.Firefox: Allows users to type non-numeric content, with the value reflecting an empty string.Firefox for Android: Allows users to type non-numeric content, with the value reflecting an empty string.Quest Browser: Prevents users from typing non-numeric content.Opera: Prevents users from typing non-numeric content.Opera Android: Prevents users from typing non-numeric content.Safari: Allows users to type non-numeric content, with the value reflecting an empty string.Safari on iOS: Allows users to type non-numeric content, with the value reflecting an empty string.Samsung Internet: Prevents users from typing non-numeric content.WebView Android: Prevents users from typing non-numeric content.WebView on iOS: Allows users to type non-numeric content, with the value reflecting an empty string. |
| html.elements.input.type_password π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.type_radio π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.type_range π | Safari | 3/18/2008 | Firefox | 8/6/2013 | 1967 | WebView Android: Pre-Chromium Android WebView recognizes the range type, but doesn't implement a range-specific control. |
| html.elements.input.type_range.tick_marks | Safari | 3/25/2019 | Firefox | 1/17/2023 | 1394 | |
| html.elements.input.type_range.vertical_orientation | Safari | 5/18/2023 | Firefox | 11/21/2023 | 187 | Chrome: Vertical orientation available via the writing-mode property (see Creating vertical controls).Chrome: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers.Chrome Android: Vertical orientation available via the writing-mode property (see Creating vertical controls).Chrome Android: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers.Edge: Vertical orientation available by setting the writing-mode: bt-lr style on the input element.Firefox: Vertical orientation available via the writing-mode property (see Creating vertical controls).Firefox: Supported using the non-standard orient="vertical" attribute.Firefox for Android: Vertical orientation available via the writing-mode property (see Creating vertical controls).Firefox for Android: Supported using the non-standard orient="vertical" attribute.Internet Explorer: Vertical orientation available by setting the writing-mode: bt-lr style on the input element.Quest Browser: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers.Opera: Vertical orientation available via the writing-mode property (see Creating vertical controls).Opera: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers.Opera Android: Vertical orientation available via the writing-mode property (see Creating vertical controls).Opera Android: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers.Safari: Vertical orientation available via the writing-mode property (see Creating vertical controls).Safari: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers.Safari on iOS: Vertical orientation available via the writing-mode property (see Creating vertical controls).Safari on iOS: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers.Samsung Internet: Vertical orientation available via the writing-mode property (see Creating vertical controls).Samsung Internet: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers.WebView Android: Vertical orientation available via the writing-mode property (see Creating vertical controls).WebView Android: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers.WebView on iOS: Vertical orientation available via the writing-mode property (see Creating vertical controls).WebView on iOS: Vertical orientation available by setting the non-standard -webkit-appearance: slider-vertical style on the input element. You shouldn't use this, since it's proprietary, unless you include appropriate fallbacks for users of other browsers. |
| html.elements.input.type_reset π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Unlike other browsers, Firefox by default persists the dynamic disabled state of a <button> across page loads. Use the autocomplete attribute to control this feature.Firefox for Android: Unlike other browsers, Firefox for Android by default persists the dynamic disabled state of a <button> across page loads. Use the autocomplete attribute to control this feature. |
| html.elements.input.type_search π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.input.type_submit π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Unlike other browsers, Firefox by default persists the dynamic disabled state of a <button> across page loads. Use the autocomplete attribute to control this feature.Firefox for Android: Unlike other browsers, Firefox for Android by default persists the dynamic disabled state of a <button> across page loads. Use the autocomplete attribute to control this feature. |
| html.elements.input.type_tel π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | Chrome: The field type doesn't demonstrate any special behavior.Safari: The field type doesn't demonstrate any special behavior. |
| html.elements.input.type_text π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.type_time π | Firefox | 11/14/2017 | Safari | 4/26/2021 | 1259 | |
| html.elements.input.type_url π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.usemap π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.input.webkitdirectory | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | Chrome Android: In Chrome for Android 131, choosing a directory crashes the browser (see bug 376834374).Chrome Android: Before version 131, users cannot choose a directory, only individual files (see bug 40248532.Opera Android: In Chrome for Android 131, choosing a directory crashes the browser (see bug 376834374).Opera Android: Before version 87, users cannot choose a directory, only individual files (see bug 40248532.Safari on iOS: The attribute can be set but users cannot choose a directory, only individual files (see bug 271705).WebView Android: In Chrome for Android 131, choosing a directory crashes the browser (see bug 376834374).WebView Android: Before version 131, users cannot choose a directory, only individual files (see bug 40248532.WebView on iOS: The attribute can be set but users cannot choose a directory, only individual files (see bug 271705). |
| html.elements.ins π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.ins.cite | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.ins.datetime | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.kbd π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 4, creating a <kbd> element incorrectly resulted in an HTMLSpanElement object, instead of the expected HTMLElement. |
| html.elements.label π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.label.for π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.legend π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.legend.align | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.li π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.li.type π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.li.value π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.link π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.link.as π | Safari | 9/20/2016 | Firefox | 9/28/2017 | 373 | |
| html.elements.link.charset π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.link.crossorigin π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | Firefox: Before Firefox 83, crossorigin is not supported for rel="icon".Firefox for Android: Before Firefox for Android 83, crossorigin is not supported for rel="icon". |
| html.elements.link.disabled π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Chrome: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Chrome Android: In Chrome Android and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Edge: Since Edge 79, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Quest Browser: In Quest Browser and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Opera: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Opera Android: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Samsung Internet: In Samsung Internet and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.WebView Android: In WebView Android and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets. |
| html.elements.link.fetchpriority π | Safari | 12/11/2023 | Firefox | 10/29/2024 | 323 | |
| html.elements.link.href π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.link.hreflang π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.link.imagesizes π | Firefox | 6/30/2020 | Safari | 12/11/2023 | 1259 | |
| html.elements.link.imagesrcset π | Firefox | 6/30/2020 | Safari | 12/11/2023 | 1259 | |
| html.elements.link.integrity π | Firefox | 12/15/2015 | Safari | 4/12/2018 | 849 | |
| html.elements.link.media π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.link.referrerpolicy π | Firefox | 11/15/2016 | Safari | 9/16/2020 | 1401 | |
| html.elements.link.rel π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.link.rel.dns-prefetch π | Safari | 6/7/2010 | Firefox | 6/11/2024 | 5118 | Firefox: Only HTTP pages were supported.Firefox for Android: Only HTTP pages were supported. |
| html.elements.link.rel.icon | Firefox | 10/24/2006 | Safari | 3/18/2008 | 511 | Chrome: If both ICO and PNG are available, will use ICO over PNG if ICO has better matching sizes set. (Per caniuse.com.).Edge: In version 79 and later (Blink-based Edge), if both ICO and PNG are available, will use ICO over PNG if ICO has better matching sizes set. (Per caniuse.com.)Firefox: Before Firefox 83, the crossorigin attribute is not supported for rel="icon".Firefox: The media attribute is not supported for rel="icon", see bug 1603885.Opera: In version 15 and later (Blink-based Opera), if both ICO and PNG are available, will use ICO over PNG if ICO has better matching sizes set. (Per caniuse.com.)Safari: If both ICO and PNG are available, will ALWAYS use ICO file, regardless of sizes set. (Per caniuse.com.)Safari on iOS: Does not use favicons at all (but may have alternative for bookmarks, etc.). (Per caniuse.com.)WebView on iOS: Does not use favicons at all (but may have alternative for bookmarks, etc.). (Per caniuse.com.) |
| html.elements.link.rel.modulepreload π | Firefox | 7/4/2023 | Safari | 9/18/2023 | 76 | |
| html.elements.link.rel.preconnect π | Firefox | 7/2/2015 | Safari | 4/12/2018 | 1015 | Firefox: Before Firefox 41, it doesn't obey the crossorigin attribute.Firefox for Android: Before Firefox for Android 41, it doesn't obey the crossorigin attribute. |
| html.elements.link.rel.prefetch π | Firefox | 10/24/2006 | Safari | 3/24/2020 | 4900 | Chrome: Requires secure contextChrome Android: Requires secure contextEdge: Requires secure contextFirefox: Requires secure contextFirefox for Android: Requires secure contextQuest Browser: Requires secure contextOpera: Requires secure contextOpera Android: Requires secure contextSamsung Internet: Requires secure contextWebView Android: Requires secure context |
| html.elements.link.rel.preload π | Safari | 4/12/2018 | Firefox | 1/26/2021 | 1020 | Firefox: Disabled due to various web compatibility issues (e.g. bug 1405761).Firefox for Android: Disabled due to various web compatibility issues (e.g. bug 1405761). |
| html.elements.link.rel.preload.as-fetch | Safari | 4/12/2018 | Firefox | 1/26/2021 | 1020 | Firefox: Disabled due to various web compatibility issues (e.g. bug 1405761).Firefox for Android: Disabled due to various web compatibility issues (e.g. bug 1405761). |
| html.elements.link.rel.preload.as-font | Safari | 4/12/2018 | Firefox | 1/26/2021 | 1020 | Firefox: Disabled due to various web compatibility issues (e.g. bug 1405761).Firefox for Android: Disabled due to various web compatibility issues (e.g. bug 1405761). |
| html.elements.link.rel.preload.as-image | Safari | 4/12/2018 | Firefox | 1/26/2021 | 1020 | Firefox: Disabled due to various web compatibility issues (e.g. bug 1405761).Firefox for Android: Disabled due to various web compatibility issues (e.g. bug 1405761). |
| html.elements.link.rel.preload.as-script | Safari | 4/12/2018 | Firefox | 1/26/2021 | 1020 | Firefox: Disabled due to various web compatibility issues (e.g. bug 1405761).Firefox for Android: Disabled due to various web compatibility issues (e.g. bug 1405761). |
| html.elements.link.rel.preload.as-style | Safari | 4/12/2018 | Firefox | 1/26/2021 | 1020 | Firefox: Disabled due to various web compatibility issues (e.g. bug 1405761).Firefox for Android: Disabled due to various web compatibility issues (e.g. bug 1405761). |
| html.elements.link.rev π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.link.sizes π | Safari | 7/25/2012 | Firefox | 1/7/2020 | 2722 | |
| html.elements.link.target π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.link.type π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.main π | Firefox | 5/14/2013 | Safari | 10/22/2013 | 161 | |
| html.elements.map π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 5, in Quirks Mode, empty maps were no longer skipped over in favor of non-empty ones when matching.Firefox: Before Firefox 17, the default styling of the <map> HTML element was display: block;. This is now display: inline; and matches the behavior of the other browsers. It was already the case in Quirks Mode. |
| html.elements.map.name | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.mark π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.marquee π | Safari | 2/2/2004 | Firefox | 1/29/2019 | 5475 | Firefox: Implements the HTMLDivElement interface.Firefox for Android: Implements the HTMLDivElement interface. |
| html.elements.marquee.behavior | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| html.elements.marquee.bgcolor | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| html.elements.marquee.direction | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| html.elements.marquee.height | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| html.elements.marquee.hspace | Safari | 2/2/2004 | Firefox | 6/17/2008 | 1597 | |
| html.elements.marquee.loop | Safari | 2/2/2004 | Firefox | 6/17/2008 | 1597 | |
| html.elements.marquee.scrollamount | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| html.elements.marquee.scrolldelay | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| html.elements.marquee.truespeed | Safari | 2/2/2004 | Firefox | 6/17/2008 | 1597 | |
| html.elements.marquee.vspace | Safari | 2/2/2004 | Firefox | 6/17/2008 | 1597 | |
| html.elements.marquee.width | Safari | 2/2/2004 | Firefox | 11/9/2004 | 281 | |
| html.elements.menu π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.meta π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.meta.charset π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.meta.content π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.meta.http-equiv π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.meta.http-equiv.content-language π | Firefox | 11/9/2004 | Safari | 3/27/2017 | 4521 | |
| html.elements.meta.http-equiv.content-security-policy π | Firefox | 11/9/2004 | Safari | 3/27/2017 | 4521 | |
| html.elements.meta.http-equiv.content-type π | Firefox | 11/9/2004 | Safari | 3/27/2017 | 4521 | |
| html.elements.meta.http-equiv.refresh π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.meta.name π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.meta.name.color-scheme π | Safari | 3/25/2019 | Firefox | 1/11/2022 | 1023 | |
| html.elements.meta.name.referrer π | Firefox | 2/24/2015 | Safari | 4/12/2018 | 1143 | Chrome: Until Chrome 46, content values weren't constrained to the values listed in the spec.Chrome Android: Until Chrome Android 46, content values weren't constrained to the values listed in the spec.Firefox: The referrer value wasn't taken into account when navigation was happening via the context menu or middle click until Firefox 39.Firefox for Android: The referrer value wasn't taken into account when navigation was happening via the context menu or middle click until Firefox for Android 39.Internet Explorer: Browsers initially supported an early draft of the specification which can only use a meta tag and is only compatible with the origin value from the new spec.Quest Browser: Until Quest Browser 5.0, content values weren't constrained to the values listed in the spec.Opera: Until Opera 33, content values weren't constrained to the values listed in the spec.Opera Android: Until Opera Android 33, content values weren't constrained to the values listed in the spec.Samsung Internet: Until Samsung Internet 5.0, content values weren't constrained to the values listed in the spec.WebView Android: Until WebView Android 46, content values weren't constrained to the values listed in the spec. |
| html.elements.meta.scheme π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.meter π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| html.elements.meter.high π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| html.elements.meter.low π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| html.elements.meter.max π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| html.elements.meter.min π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| html.elements.meter.optimum π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| html.elements.meter.value π | Safari | 7/25/2012 | Firefox | 10/9/2012 | 76 | |
| html.elements.nav π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.nobr π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.noembed π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.noframes π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.noscript π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.archive π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.border π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.classid π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.codebase π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.codetype π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.data π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.declare π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.height π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.standby π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.type π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.usemap π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.object.width π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.ol π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.ol.compact | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.ol.reversed π | Safari | 7/25/2012 | Firefox | 1/8/2013 | 167 | |
| html.elements.ol.start π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.ol.type π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.optgroup π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.optgroup.disabled π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.optgroup.label π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.option π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.option.disabled π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.option.label π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before 77, Firefox didn't display the value of the label attribute as option text if element's content was empty. See bug 40545.Firefox: Historically, Firefox has allowed keyboard and mouse events to bubble up from the <option> element to the parent <select> element, although this behavior is inconsistent across many browsers. For better Web compatibility (and for technical reasons), they will not bubble up when Firefox is in multi-process mode and the <select> element is displayed as a drop-down list. The behavior is unchanged if the <select> is presented inline and it has either the multiple attribute defined or a size attribute set to more than 1. Rather than watching <option> elements for events, you should watch for change events on <select>. See bug 1090602 for details.Firefox: When Mozilla introduced dedicated content threads to Firefox (through the Electrolysis, or e10s, project), support for styling <option> elements was removed temporarily. Starting in Firefox 54, you can apply foreground and background colors to <option> elements again, using the color and background-color CSS properties. See bug 910022 for more information. Note that this is still disabled in Linux due to lack of contrast (see bug 1338283 for progress on this).Firefox for Android: Before 77, Firefox didn't display the value of the label attribute as option text if element's content was empty. See bug 40545. |
| html.elements.option.selected π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.option.value π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.output π | Firefox | 3/22/2011 | Safari | 10/22/2013 | 945 | |
| html.elements.output.for π | Firefox | 3/22/2011 | Safari | 10/22/2013 | 945 | |
| html.elements.output.form π | Firefox | 3/22/2011 | Safari | 10/22/2013 | 945 | |
| html.elements.output.name π | Firefox | 3/22/2011 | Safari | 10/22/2013 | 945 | |
| html.elements.p π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.param π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.param.name | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.param.type | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.param.value | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.param.valuetype | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.picture π | Firefox | 5/12/2015 | Safari | 3/21/2016 | 314 | |
| html.elements.plaintext π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | Firefox: Before Firefox 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface. |
| html.elements.pre π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.pre.width | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Chrome: Specifying the width attribute has no layout effect.Chrome Android: Specifying the width attribute has no layout effect.Edge: Specifying the width attribute has no layout effect.Firefox: Since Firefox 29, specifying the width attribute has no layout effect.Firefox for Android: Since Firefox for Android 29, specifying the width attribute has no layout effect.Internet Explorer: Specifying the width attribute has no layout effect.Quest Browser: Specifying the width attribute has no layout effect.Opera: Specifying the width attribute has no layout effect.Opera Android: Specifying the width attribute has no layout effect.Safari: Specifying the width attribute has no layout effect.Safari on iOS: Specifying the width attribute has no layout effect.Samsung Internet: Specifying the width attribute has no layout effect.WebView Android: Specifying the width attribute has no layout effect. |
| html.elements.progress π | Firefox | 8/16/2011 | Safari | 7/25/2012 | 344 | Firefox: Before Firefox 14, the <progress> element was incorrectly classified as a form element, and therefore had a form attribute. This has been fixed.Firefox: Firefox provides the ::-moz-progress-bar pseudo-element, which lets you style the part of the interior of the progress bar representing the amount of work completed so far.Firefox for Android: Before Firefox for Android 14, the <progress> element was incorrectly classified as a form element, and therefore had a form attribute. This has been fixed.Firefox for Android: Firefox for Android provides the ::-moz-progress-bar pseudo-element, which lets you style the part of the interior of the progress bar representing the amount of work completed so far.Safari on iOS: Safari on iOS does not support indeterminate progress bars (they are rendered like 0%-completed progress bars).WebView on iOS: WebView on iOS does not support indeterminate progress bars (they are rendered like 0%-completed progress bars). |
| html.elements.progress.max π | Firefox | 8/16/2011 | Safari | 7/25/2012 | 344 | |
| html.elements.progress.value π | Firefox | 8/16/2011 | Safari | 7/25/2012 | 344 | |
| html.elements.q π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.q.cite π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.rb π | Safari | 6/7/2010 | Firefox | 5/12/2015 | 1800 | Chrome: Blink has support for parsing the rb element, but not for rendering rb content as expected.Chrome Android: Blink has support for parsing the rb element, but not for rendering rb content as expected.Edge: Blink has support for parsing the rb element, but not for rendering rb content as expected.Quest Browser: Blink has support for parsing the rb element, but not for rendering rb content as expected.Opera: Blink has support for parsing the rb element, but not for rendering rb content as expected.Opera Android: Blink has support for parsing the rb element, but not for rendering rb content as expected.Safari: Safari has support for parsing the rb element, but not for rendering rb content as expected.Safari on iOS: Safari on iOS has support for parsing the rb element, but not for rendering rb content as expected.Samsung Internet: Blink has support for parsing the rb element, but not for rendering rb content as expected.WebView Android: Blink has support for parsing the rb element, but not for rendering rb content as expected.WebView on iOS: WebView on iOS has support for parsing the rb element, but not for rendering rb content as expected. |
| html.elements.rp π | Safari | 6/7/2010 | Firefox | 5/12/2015 | 1800 | |
| html.elements.rt π | Safari | 6/7/2010 | Firefox | 5/12/2015 | 1800 | |
| html.elements.rtc π | Firefox | 10/14/2014 | Safari | 3/24/2020 | 1988 | |
| html.elements.ruby π | Safari | 6/7/2010 | Firefox | 5/12/2015 | 1800 | |
| html.elements.s π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface. |
| html.elements.samp π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.script π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Firefox: Starting in Firefox 4, inserting <script> elements that have been created by calling document.createElement("script") no longer enforces execution in insertion order. This change lets Firefox properly abide by the specification. To make script-inserted external scripts execute in their insertion order, set .async=false on them. |
| html.elements.script.async π | Safari | 6/8/2009 | Firefox | 1/21/2010 | 227 | |
| html.elements.script.crossorigin π | Firefox | 7/17/2012 | Safari | 7/25/2012 | 8 | |
| html.elements.script.defer π | Safari | 10/26/2007 | Firefox | 6/30/2009 | 613 | Chrome: Chrome does not defer scripts with the defer attribute when the page is served as XHTML (application/xhtml+xml), see bug 41253514 and bug 41408348Chrome Android: Chrome Android does not defer scripts with the defer attribute when the page is served as XHTML (application/xhtml+xml), see bug 41253514 and bug 41408348Firefox: Since Firefox 3.6, the defer attribute is ignored on scripts that don't have the src attribute. However, in Firefox 3.5 even inline scripts are deferred if the defer attribute is set.Internet Explorer: Before version 10, Internet Explorer implemented defer by a proprietary specification. Since version 10 it conforms to the W3C specification.Quest Browser: Quest Browser does not defer scripts with the defer attribute when the page is served as XHTML (application/xhtml+xml), see bug 41253514 and bug 41408348Opera: Opera does not defer scripts with the defer attribute when the page is served as XHTML (application/xhtml+xml), see bug 41253514 and bug 41408348Opera Android: Opera Android does not defer scripts with the defer attribute when the page is served as XHTML (application/xhtml+xml), see bug 41253514 and bug 41408348Samsung Internet: Samsung Internet does not defer scripts with the defer attribute when the page is served as XHTML (application/xhtml+xml), see bug 41253514 and bug 41408348WebView Android: WebView Android does not defer scripts with the defer attribute when the page is served as XHTML (application/xhtml+xml), see bug 41253514 and bug 41408348 |
| html.elements.script.fetchpriority π | Safari | 12/11/2023 | Firefox | 10/29/2024 | 323 | |
| html.elements.script.integrity π | Firefox | 12/15/2015 | Safari | 4/12/2018 | 849 | |
| html.elements.script.nomodule π | Safari | 9/19/2017 | Firefox | 5/9/2018 | 232 | |
| html.elements.script.referrerpolicy π | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | |
| html.elements.script.src π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.script.type π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.script.type.importmap π | Firefox | 12/13/2022 | Safari | 3/27/2023 | 104 | |
| html.elements.script.type.module | Safari | 3/27/2017 | Firefox | 5/9/2018 | 408 | Chrome: Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 40518469.Chrome Android: Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 40518469.Edge: Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 40518469.Quest Browser: Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 40518469.Opera: Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 40518469.Opera Android: Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 40518469.Safari: Module scripts do not load when the page is served as XHTML (application/xhtml+xml).Safari on iOS: Module scripts do not load when the page is served as XHTML (application/xhtml+xml).Samsung Internet: Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 40518469.WebView Android: Module scripts without the async attribute do not load when the page is served as XHTML (application/xhtml+xml). See bug 40518469.WebView on iOS: Module scripts do not load when the page is served as XHTML (application/xhtml+xml). |
| html.elements.search π | Safari | 9/18/2023 | Firefox | 9/26/2023 | 8 | |
| html.elements.section π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.select π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: border-radius on <select> elements is ignored unless -webkit-appearance is overridden to an appropriate value.Chrome Android: border-radius on <select> elements is ignored unless -webkit-appearance is overridden to an appropriate value.Firefox: Historically, Firefox has allowed keyboard and mouse events to bubble up from the <option> element to the parent <select> element, although this behavior is inconsistent across many browsers. For better Web compatibility (and for technical reasons), when Firefox is in multi-process mode the <select> element is displayed as a drop-down list. The behavior is unchanged if the <select> is presented inline and it has either the multiple attribute defined or a size attribute set to more than 1. Rather than watching <option> elements for events, you should watch for change events on <select>. See bug 1090602 for details.Firefox for Android: Firefox for Android, by default, sets a background-image gradient on all <select multiple> elements. This can be disabled using background-image: none.Quest Browser: border-radius on <select> elements is ignored unless -webkit-appearance is overridden to an appropriate value.Safari: border-radius on <select> elements is ignored unless -webkit-appearance is overridden to an appropriate value.Safari on iOS: border-radius on <select> elements is ignored unless -webkit-appearance is overridden to an appropriate value.Samsung Internet: border-radius on <select> elements is ignored unless -webkit-appearance is overridden to an appropriate value.WebView Android: In the Browser app for Android 4.1 (and possibly later versions), there is a bug where the menu indicator triangle on the side of a <select> will not be displayed if a background, border, or border-radius style is applied to the <select>.WebView Android: border-radius on <select> elements is ignored unless -webkit-appearance is overridden to an appropriate value.WebView on iOS: border-radius on <select> elements is ignored unless -webkit-appearance is overridden to an appropriate value. |
| html.elements.select.autocomplete π | Safari | 3/21/2016 | Firefox | 3/13/2018 | 722 | |
| html.elements.select.disabled π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.select.form π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.select.hr_in_select | Safari | 9/18/2023 | Firefox | 1/23/2024 | 127 | Chrome: Only exposes the <hr> visually in the page when the menu is expanded (arrowing within the collapsed menu does not show them).Chrome: Does not expose the <hr> within the accessibility tree.Edge: Only exposes the <hr> visually in the page when the menu is expanded (arrowing within the collapsed menu does not show them).Edge: Does not expose the <hr> within the accessibility tree.Firefox: Does not expose the <hr> within the accessibility tree.Firefox for Android: Does not expose the <hr> within the accessibility tree.Opera: Only exposes the <hr> visually in the page when the menu is expanded (arrowing within the collapsed menu does not show them).Opera: Does not expose the <hr> within the accessibility tree.Safari: Does not expose the <hr> within the accessibility tree.Safari on iOS: Does not expose the <hr> within the accessibility tree.WebView on iOS: Does not expose the <hr> within the accessibility tree. |
| html.elements.select.multiple π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.select.name π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.select.required π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| html.elements.select.size π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.slot π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| html.elements.slot.name | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| html.elements.small π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.source π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | Firefox: Until Firefox 15, Firefox picked the first source element that has a type matching the MIME-type of a supported media format; see bug 449363 for details.Firefox for Android: Until Firefox for Android 15, Firefox for Android picked the first source element that has a type matching the MIME-type of a supported media format; see bug 449363 for details. |
| html.elements.source.height π | Safari | 9/20/2021 | Firefox | 12/13/2022 | 449 | |
| html.elements.source.media π | Safari | 3/18/2008 | Firefox | 8/28/2012 | 1624 | Firefox: media is supported in <source> within <picture>, <audio>, and <video>. In Firefox 53-119, media is supported only in <source> within <picture>.Firefox for Android: media is supported in <source> within <picture>, <audio>, and <video>. In Firefox for Android 53-119, media is supported only in <source> within <picture>. |
| html.elements.source.sizes π | Firefox | 5/12/2015 | Safari | 3/21/2016 | 314 | Chrome: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).Chrome Android: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).Opera: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).Opera Android: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).Samsung Internet: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).WebView Android: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor). |
| html.elements.source.src π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.source.srcset π | Firefox | 5/12/2015 | Safari | 3/21/2016 | 314 | Chrome: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).Chrome Android: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).Opera: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).Opera Android: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).Samsung Internet: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).WebView Android: Supports a subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor). |
| html.elements.source.type π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.source.width π | Safari | 9/20/2021 | Firefox | 12/13/2022 | 449 | |
| html.elements.span π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.strike π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface.Firefox for Android: Before Firefox for Android 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface. |
| html.elements.strong π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 4, creating a <strong> element incorrectly resulted in an HTMLSpanElement object, instead of the expected HTMLElement. |
| html.elements.style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.style.media π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.style.type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before 75, Firefox accepted any CSS media (MIME) type, with optional parameters. Starting in 75, this has been restricted to the string 'text/css', per the spec. |
| html.elements.sub π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.summary π | Safari | 7/25/2012 | Firefox | 9/20/2016 | 1518 | |
| html.elements.sup π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.table π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.table.align | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.table.bgcolor | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.table.border | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.table.cellpadding | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.table.cellspacing | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.table.frame | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.table.rules | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.table.summary | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.table.width | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.tbody π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.tbody.align | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.tbody.bgcolor | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.tbody.charoff | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.tbody.valign | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.td π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.td.abbr | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.td.align | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.td.axis | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.td.bgcolor | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.td.charoff | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.td.colspan | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.td.headers | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.td.rowspan | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.td.scope | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.td.valign | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.td.width | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.template π | Firefox | 6/25/2013 | Safari | 10/16/2014 | 478 | |
| html.elements.template.shadowrootmode π | Safari | 3/27/2023 | Firefox | 2/20/2024 | 330 | |
| html.elements.textarea π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 6, when a <textarea> was focused, the insertion point was placed at the end of the text by default. Other major browsers place the insertion point at the beginning of the text.Firefox: A default background-image gradient is applied to all <textarea> elements, which can be disabled using background-image: none.Firefox: Before Firefox 89, manipulating the content of <textarea> elements using Document.execCommand() commands requires workarounds (see bug 1220696).Firefox for Android: Before Firefox for Android 6, when a <textarea> was focused, the insertion point was placed at the end of the text by default. Other major browsers place the insertion point at the beginning of the text.Firefox for Android: A default background-image gradient is applied to all <textarea> elements, which can be disabled using background-image: none.Firefox for Android: Before Firefox for Android 89, manipulating the content of <textarea> elements using Document.execCommand() commands requires workarounds (see bug 1220696).Safari on iOS: Unlike other major browsers, a default style of opacity: 0.4 is applied to disabled <textarea> elements.WebView on iOS: Unlike other major browsers, a default style of opacity: 0.4 is applied to disabled <textarea> elements. |
| html.elements.textarea.autocomplete π | Safari | 3/21/2016 | Firefox | 3/13/2018 | 722 | |
| html.elements.textarea.autocomplete.one-time-code | Safari | 9/17/2018 | Firefox | 1/17/2023 | 1583 | |
| html.elements.textarea.cols π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.textarea.dirname π | Safari | 7/25/2012 | Firefox | 8/1/2023 | 4024 | |
| html.elements.textarea.disabled π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.textarea.form π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.textarea.maxlength π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Safari: Before Safari 17, newline characters counted as two characters instead of one. See bug 249916.Safari on iOS: Before Safari on iOS 17, newline characters counted as two characters instead of one. See bug 249916.WebView on iOS: Before WebView on iOS 17, newline characters counted as two characters instead of one. See bug 249916. |
| html.elements.textarea.minlength π | Firefox | 1/24/2017 | Safari | 3/27/2017 | 62 | |
| html.elements.textarea.name π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.textarea.placeholder π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.textarea.placeholder.line_breaks | Firefox | 3/13/2018 | Safari | 9/12/2022 | 1644 | |
| html.elements.textarea.readonly π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.textarea.required π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| html.elements.textarea.rows π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.textarea.spellcheck | Firefox | 10/24/2006 | Safari | 7/20/2011 | 1730 | |
| html.elements.textarea.wrap π | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| html.elements.tfoot π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.tfoot.align | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.tfoot.bgcolor | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.tfoot.charoff | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.tfoot.valign | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.th π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.th.abbr | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.th.align | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.th.axis | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.th.bgcolor | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.th.charoff | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.th.colspan | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.th.headers | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.th.rowspan | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.th.scope | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.th.valign | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.th.width | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.thead π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Safari: Backgrounds applied to <thead> elements will be applied to each table cell, rather than the entire header. To mimic the behavior of other browsers, set the background-attachment CSS property to fixed.Safari on iOS: Backgrounds applied to <thead> elements will be applied to each table cell, rather than the entire header. To mimic the behavior of other browsers, set the background-attachment CSS property to fixed.WebView on iOS: Backgrounds applied to <thead> elements will be applied to each table cell, rather than the entire header. To mimic the behavior of other browsers, set the background-attachment CSS property to fixed. |
| html.elements.thead.align | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.thead.bgcolor | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.thead.charoff | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.thead.valign | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.time π | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | |
| html.elements.time.datetime | Firefox | 6/25/2013 | Safari | 10/22/2013 | 119 | |
| html.elements.title π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.tr π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.tr.align | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.tr.bgcolor | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.elements.tr.valign | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.track π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | Chrome Android: Doesn't work for fullscreen video.Quest Browser: Doesn't work for fullscreen video.Samsung Internet: Doesn't work for fullscreen video.WebView Android: Doesn't work for fullscreen video. |
| html.elements.track.default π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| html.elements.track.kind π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| html.elements.track.label π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| html.elements.track.src π | Safari | 7/25/2012 | Firefox | 11/15/2016 | 1574 | Firefox: Before Firefox 50, setting the src didn't work, though it didn't raise an error.Firefox for Android: Before Firefox for Android 50, setting the src didn't work, though it didn't raise an error. |
| html.elements.track.srclang π | Safari | 7/25/2012 | Firefox | 7/22/2014 | 727 | |
| html.elements.tt π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface.Firefox for Android: Before Firefox for Android 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface. |
| html.elements.u π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Before Firefox 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface. |
| html.elements.ul π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.ul.compact π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| html.elements.ul.type π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.var π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.video π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.video.aspect_ratio_computed_from_attributes | Firefox | 12/10/2019 | Safari | 9/16/2020 | 281 | |
| html.elements.video.autoplay π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.video.autoplay.requires_muted_audio | Firefox | 5/21/2019 | Safari | 9/12/2022 | 1210 | Firefox for Android: Between versions 79 and 91, the default behavior was to block videos from autoplaying, regardless of whether audio was muted. |
| html.elements.video.controls π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.video.crossorigin π | Safari | 9/20/2016 | Firefox | 3/10/2020 | 1267 | Firefox: With crossorigin="use-credentials", cookies aren't sent during seek. See bug 1532722.Firefox for Android: With crossorigin="use-credentials", cookies aren't sent during seek. See bug 1532722. |
| html.elements.video.disablepictureinpicture π | Safari | 3/24/2020 | Firefox | 1/23/2024 | 1400 | Firefox: When this attribute is set, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.Firefox: When this attribute is set, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.Firefox for Android: When this attribute is set, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.Firefox for Android: When this attribute is set, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP. |
| html.elements.video.height π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.video.loop π | Safari | 3/18/2008 | Firefox | 3/13/2012 | 1456 | |
| html.elements.video.muted π | Safari | 6/7/2010 | Firefox | 3/13/2012 | 645 | |
| html.elements.video.poster π | Safari | 3/18/2008 | Firefox | 1/21/2010 | 674 | |
| html.elements.video.preload π | Safari | 3/18/2008 | Firefox | 3/22/2011 | 1099 | Chrome: Defaults to metadata in Chrome 64.Chrome Android: Defaults to metadata in Chrome Android 64.Quest Browser: Defaults to metadata in Quest Browser 5.0.Opera: Defaults to metadata in Opera 51.Opera Android: Defaults to metadata in Opera Android 47.Samsung Internet: Defaults to metadata in Samsung Internet 9.0.WebView Android: Defaults to metadata in WebView Android 64. |
| html.elements.video.src π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.video.width π | Safari | 3/18/2008 | Firefox | 6/30/2009 | 469 | |
| html.elements.wbr π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.elements.xmp π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | Firefox: Before Firefox 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface.Firefox for Android: Before Firefox for Android 4, this element implemented the HTMLSpanElement interface instead of the standard HTMLElement interface. |
| html.global_attributes.accesskey π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.global_attributes.autofocus π | Safari | 3/14/2022 | Firefox | 2/14/2023 | 337 | Chrome: Supported for the <button>, <input>, <select>, and <textarea> elements.Chrome Android: Supported for the <button>, <input>, <select>, and <textarea> elements.Edge: Supported for the <button>, <input>, <select>, and <textarea> elements.Firefox: Supported for the <button>, <input>, <select>, and <textarea> elements.Firefox for Android: Supported for the <button>, <input>, <select>, and <textarea> elements.Internet Explorer: Supported for the <button>, <input>, <select>, and <textarea> elements.Quest Browser: Supported for the <button>, <input>, <select>, and <textarea> elements.Opera: Supported for the <button>, <input>, <select>, and <textarea> elements.Opera Android: Supported for the <button>, <input>, <select>, and <textarea> elements.Safari: Supported for the <button>, <input>, <select>, and <textarea> elements.Safari on iOS: If there's no hardware keyboard connected, then the autofocus attribute has no effect (for example, the focus event doesn't fire and the element does not match the :focus selector).Samsung Internet: Supported for the <button>, <input>, <select>, and <textarea> elements.WebView Android: Supported for the <button>, <input>, <select>, and <textarea> elements.WebView on iOS: If there's no hardware keyboard connected, then the autofocus attribute has no effect (for example, the focus event doesn't fire and the element does not match the :focus selector). |
| html.global_attributes.class π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.global_attributes.contenteditable π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| html.global_attributes.data_attributes π | Safari | 7/20/2011 | Firefox | 8/16/2011 | 27 | |
| html.global_attributes.dir π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.global_attributes.draggable π | Firefox | 10/24/2006 | Safari | 6/7/2010 | 1322 | |
| html.global_attributes.enterkeyhint π | Safari | 3/24/2020 | Firefox | 11/2/2021 | 588 | |
| html.global_attributes.exportparts π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| html.global_attributes.hidden π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Safari: This attribute has no effect on <option> elements.Safari on iOS: This attribute has no effect on <option> elements.WebView on iOS: This attribute has no effect on <option> elements. |
| html.global_attributes.id π | Safari | 6/23/2003 | Firefox | 9/2/2014 | 4089 | Firefox: id is a true global attribute only since Firefox 32.Firefox for Android: id is a true global attribute only since Firefox for Android 32. |
| html.global_attributes.inert π | Safari | 5/16/2022 | Firefox | 4/11/2023 | 330 | |
| html.global_attributes.inputmode π | Safari | 3/25/2019 | Firefox | 12/7/2021 | 988 | Safari on iOS: Before iOS 13, inputmode="none" had no effect.WebView on iOS: Before iOS 13, inputmode="none" had no effect. |
| html.global_attributes.lang π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.global_attributes.nonce π | Firefox | 7/22/2014 | Safari | 3/14/2022 | 2792 | |
| html.global_attributes.nonce.nonce_hiding π | Firefox | 4/7/2020 | Safari | 5/16/2022 | 769 | |
| html.global_attributes.part π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| html.global_attributes.popover π | Safari | 9/18/2023 | Firefox | 4/16/2024 | 211 | |
| html.global_attributes.slot π | Safari | 9/20/2016 | Firefox | 10/23/2018 | 763 | |
| html.global_attributes.spellcheck π | Firefox | 10/24/2006 | Safari | 7/20/2011 | 1730 | |
| html.global_attributes.style π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| html.global_attributes.tabindex π | Firefox | 11/29/2005 | Safari | 3/18/2008 | 840 | |
| html.global_attributes.title π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| html.global_attributes.title.multi-line_titles | Safari | 9/19/2017 | Firefox | 1/23/2018 | 126 | |
| html.global_attributes.translate π | Safari | 7/25/2012 | Firefox | 3/14/2023 | 3884 |
| API | First Browser | Date | Last Browser | Date | Days | Notes |
|---|---|---|---|---|---|---|
| http.data-url π | Firefox | 10/24/2006 | Safari | 3/18/2008 | 511 | Edge: Before Edge 79, the maximum size supported is 4GB.Internet Explorer: Since Internet Explorer 9, the maximum size supported is 4GB.Internet Explorer: In Internet Explorer 8, the maximum size supported is 32kB. |
| http.data-url.css_files | Firefox | 10/24/2006 | Safari | 3/18/2008 | 511 | |
| http.data-url.html_files | Firefox | 10/24/2006 | Safari | 3/18/2008 | 511 | |
| http.data-url.js_files | Firefox | 10/24/2006 | Safari | 3/18/2008 | 511 | |
| http.data-url.top_level_navigation_blocked | Firefox | 3/13/2018 | Safari | 9/16/2020 | 918 | |
| http.headers.Accept π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: In Firefox 66, the default Accept header value changed to */*.Firefox for Android: In Firefox for Android 66, the default Accept header value changed to */*. |
| http.headers.Accept-Encoding π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Accept-Language π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Accept-Ranges π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Access-Control-Allow-Credentials π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| http.headers.Access-Control-Allow-Headers π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| http.headers.Access-Control-Allow-Headers.wildcard | Firefox | 9/3/2019 | Safari | 9/19/2019 | 16 | |
| http.headers.Access-Control-Allow-Methods π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| http.headers.Access-Control-Allow-Methods.wildcard | Firefox | 9/3/2019 | Safari | 9/19/2019 | 16 | |
| http.headers.Access-Control-Allow-Origin π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| http.headers.Access-Control-Expose-Headers π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| http.headers.Access-Control-Expose-Headers.wildcard | Firefox | 9/3/2019 | Safari | 9/19/2019 | 16 | |
| http.headers.Access-Control-Max-Age π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| http.headers.Access-Control-Request-Headers π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| http.headers.Access-Control-Request-Method π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| http.headers.Age π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Alt-Svc π | Firefox | 5/12/2015 | Safari | 9/18/2023 | 3051 | Firefox: Only supports draft-04Firefox for Android: Only supports draft-04 |
| http.headers.Authorization π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Authorization.Basic π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Authorization.Digest π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Authorization.Digest.md5 | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Authorization.NTLM | Firefox | 11/9/2004 | Safari | 10/22/2013 | 3269 | |
| http.headers.Authorization.Negotiate π | Firefox | 11/9/2004 | Safari | 10/22/2013 | 3269 | |
| http.headers.Authorization.authorization_removed_cross_origin π | Safari | 10/24/2022 | Firefox | 3/14/2023 | 141 | |
| http.headers.Cache-Control π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Cache-Control.immutable | Firefox | 9/20/2016 | Safari | 9/19/2017 | 364 | |
| http.headers.Cache-Control.stale-while-revalidate | Firefox | 7/9/2019 | Safari | 9/16/2020 | 435 | |
| http.headers.Clear-Site-Data π | Firefox | 10/23/2018 | Safari | 9/18/2023 | 1791 | |
| http.headers.Clear-Site-Data.cookies π | Firefox | 10/23/2018 | Safari | 9/18/2023 | 1791 | |
| http.headers.Clear-Site-Data.secure_context_required | Firefox | 10/23/2018 | Safari | 9/18/2023 | 1791 | |
| http.headers.Clear-Site-Data.storage π | Firefox | 10/23/2018 | Safari | 9/18/2023 | 1791 | |
| http.headers.Clear-Site-Data.wildcard π | Firefox | 10/23/2018 | Safari | 9/18/2023 | 1791 | |
| http.headers.Connection π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Content-Disposition π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Chrome: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Chrome Android: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Firefox: From version 82, if an <a> element's download attribute is set (for a same-origin URL) then the inline directive is ignored. Earlier versions did not match the specification and respected the header directive over the attribute. See bug 1658877.Firefox for Android: From version 82, if an <a> element's download attribute is set (for a same-origin URL) then the inline directive is ignored. Earlier versions did not match the specification and respected the header directive over the attribute. See bug 1658877.Quest Browser: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Opera: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Opera Android: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Safari: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 18384.Safari on iOS: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 18384.Samsung Internet: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.WebView Android: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.WebView on iOS: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 18384. |
| http.headers.Content-Encoding π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Content-Encoding.br π | Firefox | 1/26/2016 | Safari | 9/19/2017 | 602 | Safari: Unsupported before macOS 10.13 High Sierra. |
| http.headers.Content-Language π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Content-Length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Content-Length.cors_response_safelist | Safari | 3/25/2019 | Firefox | 3/23/2021 | 729 | |
| http.headers.Content-Location π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Content-Range π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Content-Security-Policy π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | Internet Explorer: Only supporting 'sandbox' directive. |
| http.headers.Content-Security-Policy.base-uri π | Firefox | 1/13/2015 | Safari | 9/20/2016 | 616 | |
| http.headers.Content-Security-Policy.child-src π | Firefox | 3/8/2016 | Safari | 9/20/2016 | 196 | |
| http.headers.Content-Security-Policy.connect-src π | Safari | 10/22/2013 | Firefox | 11/15/2016 | 1120 | Firefox: Before Firefox 50, ping attributes of <a> elements weren't covered by connect-src. |
| http.headers.Content-Security-Policy.default-src π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Security-Policy.font-src π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Security-Policy.form-action π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | |
| http.headers.Content-Security-Policy.frame-ancestors π | Safari | 9/20/2016 | Firefox | 1/23/2018 | 490 | Firefox: Before Firefox 58, frame-ancestors is ignored in Content-Security-Policy-Report-Only.Firefox for Android: Before Firefox for Android 58, frame-ancestors is ignored in Content-Security-Policy-Report-Only. |
| http.headers.Content-Security-Policy.frame-src π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Security-Policy.img-src π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Security-Policy.manifest-src π | Firefox | 9/22/2015 | Safari | 9/19/2017 | 728 | |
| http.headers.Content-Security-Policy.media-src π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Security-Policy.meta-element-support | Safari | 10/22/2013 | Firefox | 3/8/2016 | 868 | |
| http.headers.Content-Security-Policy.object-src π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Security-Policy.report-sample | Firefox | 10/23/2018 | Safari | 3/14/2022 | 1238 | |
| http.headers.Content-Security-Policy.report-to π | Safari | 3/27/2023 | Firefox | 9/3/2024 | 526 | |
| http.headers.Content-Security-Policy.report-uri π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Security-Policy.sandbox π | Safari | 10/22/2013 | Firefox | 11/15/2016 | 1120 | |
| http.headers.Content-Security-Policy.script-src π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Security-Policy.script-src.external_scripts π | Safari | 7/20/2022 | Firefox | 8/1/2023 | 377 | |
| http.headers.Content-Security-Policy.script-src.wasm-unsafe-eval | Firefox | 6/28/2022 | Safari | 9/12/2022 | 76 | |
| http.headers.Content-Security-Policy.script-src-attr π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| http.headers.Content-Security-Policy.script-src-elem π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| http.headers.Content-Security-Policy.strict-dynamic | Firefox | 3/7/2017 | Safari | 3/14/2022 | 1833 | |
| http.headers.Content-Security-Policy.style-src π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Security-Policy.style-src-attr π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| http.headers.Content-Security-Policy.style-src-elem π | Safari | 3/14/2022 | Firefox | 12/13/2022 | 274 | |
| http.headers.Content-Security-Policy.unsafe-hashes | Safari | 3/14/2022 | Firefox | 1/17/2023 | 309 | |
| http.headers.Content-Security-Policy.upgrade-insecure-requests π | Firefox | 11/3/2015 | Safari | 3/27/2017 | 510 | |
| http.headers.Content-Security-Policy.worker-src π | Firefox | 1/23/2018 | Safari | 5/16/2022 | 1574 | Chrome: Chrome 59 and higher skips the deprecated child-src directive.Chrome Android: Chrome Android 59 and higher skips the deprecated child-src directive.Quest Browser: Quest Browser 5.0 and higher skips the deprecated child-src directive.Opera: Opera 46 and higher skips the deprecated child-src directive.Opera Android: Opera Android 43 and higher skips the deprecated child-src directive.WebView Android: WebView Android 59 and higher skips the deprecated child-src directive. |
| http.headers.Content-Security-Policy.worker_support | Safari | 9/20/2016 | Firefox | 11/15/2016 | 56 | |
| http.headers.Content-Security-Policy-Report-Only π | Firefox | 8/6/2013 | Safari | 10/22/2013 | 77 | |
| http.headers.Content-Type π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Cookie π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Cross-Origin-Embedder-Policy π | Firefox | 7/28/2020 | Safari | 12/13/2021 | 503 | |
| http.headers.Cross-Origin-Opener-Policy π | Firefox | 7/28/2020 | Safari | 12/13/2021 | 503 | |
| http.headers.Cross-Origin-Resource-Policy π | Safari | 9/17/2018 | Firefox | 3/10/2020 | 540 | Chrome: Until version 75, downloads for files with this header would fail in Chrome. See bug 41452948.Chrome: From version 80 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 86, partial PDF loading is disabled.Chrome Android: Until version 75, downloads for files with this header would fail in Chrome Android. See bug 41452948.Chrome Android: From version 80 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 86, partial PDF loading is disabled.Quest Browser: Until version 7.0, downloads for files with this header would fail in Quest Browser. See bug 41452948.Quest Browser: From version 9.0 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 12.0, partial PDF loading is disabled.Opera: Until version 62, downloads for files with this header would fail in Opera. See bug 41452948.Opera: From version 67 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 72, partial PDF loading is disabled.Opera Android: Until version 54, downloads for files with this header would fail in Opera Android. See bug 41452948.Opera Android: From version 57 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 61, partial PDF loading is disabled.WebView Android: Until version 75, downloads for files with this header would fail in WebView Android. See bug 41452948.WebView Android: From version 80 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 86, partial PDF loading is disabled. |
| http.headers.Date π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.ETag π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Expires π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.From π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Host π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.If-Match π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.If-Modified-Since π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.If-None-Match π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.If-Range π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.If-Unmodified-Since π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Keep-Alive π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Last-Modified π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Link π | Safari | 9/18/2023 | Firefox | 11/21/2023 | 64 | |
| http.headers.Link.fetchpriority π | Safari | 12/11/2023 | Firefox | 10/29/2024 | 323 | |
| http.headers.Location π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Origin π | Safari | 6/23/2003 | Firefox | 10/22/2019 | 5965 | Edge: Before Edge 79, this header was not sent with POST requests.Firefox: Not sent with POST requests, see bug 446344.Firefox for Android: Not sent with POST requests, see bug 446344. |
| http.headers.Pragma π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Proxy-Authenticate π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Range π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Range.cors_safe | Safari | 9/12/2022 | Firefox | 8/29/2023 | 351 | |
| http.headers.Referer π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Referer.length_limit_4096B | Firefox | 10/22/2019 | Safari | 9/16/2020 | 330 | |
| http.headers.Referrer-Policy π | Firefox | 11/15/2016 | Safari | 4/12/2018 | 513 | |
| http.headers.Referrer-Policy.default_strict-origin-when-cross-origin | Firefox | 3/23/2021 | Safari | 9/20/2021 | 181 | |
| http.headers.Referrer-Policy.same-origin | Firefox | 3/7/2017 | Safari | 4/12/2018 | 401 | |
| http.headers.Referrer-Policy.strict-origin | Firefox | 3/7/2017 | Safari | 4/12/2018 | 401 | |
| http.headers.Referrer-Policy.strict-origin-when-cross-origin | Firefox | 3/7/2017 | Safari | 4/12/2018 | 401 | |
| http.headers.Refresh π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Sec-Fetch-Dest π | Firefox | 7/13/2021 | Safari | 3/27/2023 | 622 | |
| http.headers.Sec-Fetch-Mode π | Firefox | 7/13/2021 | Safari | 3/27/2023 | 622 | |
| http.headers.Sec-Fetch-Site π | Firefox | 7/13/2021 | Safari | 3/27/2023 | 622 | |
| http.headers.Sec-Fetch-User π | Firefox | 7/13/2021 | Safari | 3/27/2023 | 622 | |
| http.headers.Sec-WebSocket-Accept π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| http.headers.Sec-WebSocket-Extensions π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| http.headers.Sec-WebSocket-Key π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| http.headers.Sec-WebSocket-Protocol π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| http.headers.Sec-WebSocket-Version π | Firefox | 3/13/2012 | Safari | 7/25/2012 | 134 | |
| http.headers.Server π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Server-Timing π | Firefox | 6/26/2018 | Safari | 3/27/2023 | 1735 | |
| http.headers.Service-Worker π | Firefox | 1/26/2016 | Safari | 4/12/2018 | 807 | |
| http.headers.Service-Worker-Allowed π | Firefox | 8/11/2015 | Safari | 4/12/2018 | 975 | |
| http.headers.Set-Cookie π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Set-Cookie.HttpOnly | Firefox | 6/17/2008 | Safari | 6/7/2010 | 720 | |
| http.headers.Set-Cookie.Max-Age | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Set-Cookie.SameSite π | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Safari: Safari 13 on macOS 10.14 (Mojave), treats SameSite=None and invalid values as Strict. This is fixed in version 10.15 (Catalina) and later.Safari: Treats SameSite=None and invalid values as Strict in macOS before 10.15 Catalina. See bug 198181.Safari on iOS: Treats SameSite=None and invalid values as Strict in iOS before 13. See bug 198181.WebView on iOS: Treats SameSite=None and invalid values as Strict in iOS before 13. See bug 198181. |
| http.headers.Set-Cookie.SameSite.Lax | Firefox | 5/9/2018 | Safari | 9/17/2018 | 131 | |
| http.headers.Set-Cookie.SameSite.None | Firefox | 5/9/2018 | Safari | 9/19/2019 | 498 | Chrome: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Chrome Android: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Quest Browser: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Opera: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Opera Android: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Safari: Not supported before macOS version 10.15 (Catalina).Samsung Internet: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.WebView Android: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients. |
| http.headers.Set-Cookie.SameSite.Strict | Firefox | 5/9/2018 | Safari | 9/17/2018 | 131 | |
| http.headers.Set-Cookie.cookie_prefixes | Firefox | 11/15/2016 | Safari | 9/19/2019 | 1038 | |
| http.headers.SourceMap π | Safari | 10/22/2013 | Firefox | 8/8/2017 | 1386 | Chrome: Not supported for ECMAScript Modules ( <script type="module">). See bug 40854862.Chrome Android: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Quest Browser: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Opera: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Opera Android: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Samsung Internet: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.WebView Android: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862. |
| http.headers.Strict-Transport-Security π | Firefox | 3/22/2011 | Safari | 10/22/2013 | 945 | |
| http.headers.TE π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Timing-Allow-Origin π | Firefox | 3/8/2016 | Safari | 9/19/2017 | 560 | |
| http.headers.Transfer-Encoding π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Upgrade π | Safari | 6/7/2010 | Firefox | 8/16/2011 | 435 | |
| http.headers.Upgrade-Insecure-Requests π | Firefox | 8/2/2016 | Safari | 3/27/2017 | 237 | |
| http.headers.User-Agent π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Vary π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.Via π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.WWW-Authenticate π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.WWW-Authenticate.Basic π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.WWW-Authenticate.Digest π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.WWW-Authenticate.Digest.md5 | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.WWW-Authenticate.NTLM | Firefox | 11/9/2004 | Safari | 10/22/2013 | 3269 | |
| http.headers.WWW-Authenticate.Negotiate π | Firefox | 11/9/2004 | Safari | 10/22/2013 | 3269 | |
| http.headers.Warning π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.headers.X-Content-Type-Options π | Firefox | 11/15/2016 | Safari | 9/19/2017 | 308 | Chrome: Not supported for stylesheets.Chrome Android: Not supported for stylesheets.Quest Browser: Not supported for stylesheets.Opera: Not supported for stylesheets.Opera Android: Not supported for stylesheets.Samsung Internet: Not supported for stylesheets.WebView Android: Not supported for stylesheets. |
| http.headers.X-Frame-Options π | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | |
| http.headers.X-Frame-Options.SAMEORIGIN | Safari | 6/8/2009 | Firefox | 3/22/2011 | 652 | Chrome: Starting in Chrome 61, this applies to all of a frame's ancestors.Chrome Android: Starting in Chrome Android 61, this applies to all of a frame's ancestors.Firefox: Starting in Firefox 59, this applies to all of a frame's ancestors.Firefox for Android: Starting in Firefox for Android 59, this applies to all of a frame's ancestors.Quest Browser: Starting in Quest Browser 5.0, this applies to all of a frame's ancestors.Opera: Starting in Opera 48, this applies to all of a frame's ancestors.Opera Android: Starting in Opera Android 45, this applies to all of a frame's ancestors.Samsung Internet: Starting in Samsung Internet 8.0, this applies to all of a frame's ancestors.WebView Android: Starting in WebView Android 61, this applies to all of a frame's ancestors. |
| http.methods.CONNECT π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.methods.DELETE π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.methods.GET π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.methods.HEAD π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.methods.OPTIONS π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.methods.POST π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.methods.PUT π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| http.mixed-content π | Firefox | 8/6/2013 | Safari | 3/21/2016 | 958 | |
| http.mixed-content.blockable_mixed_content π | Firefox | 8/6/2013 | Safari | 3/21/2016 | 958 | Chrome: From version 79 blocks iframes, scripts, and stylesheets.Chrome Android: From version 79 blocks iframes, scripts, and stylesheets.Edge: From version 79 blocks iframes, scripts, and stylesheets.Quest Browser: From version 8.0 blocks iframes, scripts, and stylesheets.Opera: From version 66 blocks iframes, scripts, and stylesheets.Opera Android: From version 57 blocks iframes, scripts, and stylesheets.Samsung Internet: From version 12.0 blocks iframes, scripts, and stylesheets.WebView Android: From version 79 blocks iframes, scripts, and stylesheets. |
| http.status.103 π | Safari | 9/18/2023 | Firefox | 11/21/2023 | 64 | Chrome: Supported in HTTP/2 and later only.Chrome Android: Supported in HTTP/2 and later only.Edge: Supported in HTTP/2 and later only.Quest Browser: Supported in HTTP/2 and later only.Opera: Supported in HTTP/2 and later only.Opera Android: Supported in HTTP/2 and later only.Safari: Supported in HTTP/2 and later only.Safari on iOS: Supported in HTTP/2 and later only.Samsung Internet: Supported in HTTP/2 and later only.WebView Android: Supported in HTTP/2 and later only.WebView on iOS: Supported in HTTP/2 and later only. |
| http.status.103.preconnect | Safari | 9/18/2023 | Firefox | 11/21/2023 | 64 | |
| http.status.308 π | Firefox | 7/17/2012 | Safari | 10/22/2013 | 462 | Internet Explorer: Does not work below Windows 10. |
| API | First Browser | Date | Last Browser | Date | Days | Notes |
|---|---|---|---|---|---|---|
| javascript.builtins.AggregateError π | Firefox | 7/28/2020 | Safari | 9/16/2020 | 50 | |
| javascript.builtins.AggregateError.AggregateError π | Firefox | 7/28/2020 | Safari | 9/16/2020 | 50 | |
| javascript.builtins.AggregateError.errors π | Firefox | 7/28/2020 | Safari | 9/16/2020 | 50 | |
| javascript.builtins.AggregateError.serializable_object | Firefox | 7/26/2022 | Safari | 9/18/2023 | 419 | Chrome: AggregateError serializes to the Error type, without additional properties.Chrome Android: AggregateError serializes to the Error type, without additional properties.Edge: AggregateError serializes to the Error type, without additional properties.Firefox: AggregateError serializes to the AggregateError type, with properties name, message, cause, and errors.Firefox for Android: AggregateError serializes to the AggregateError type, with properties name, message, cause, and errors.Quest Browser: AggregateError serializes to the Error type, without additional properties.Opera: AggregateError serializes to the Error type, without additional properties.Opera Android: AggregateError serializes to the Error type, without additional properties.Samsung Internet: AggregateError serializes to the Error type, without additional properties.WebView Android: AggregateError serializes to the Error type, without additional properties. |
| javascript.builtins.Array π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.@@iterator π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used. |
| javascript.builtins.Array.@@species π | Firefox | 8/2/2016 | Safari | 9/20/2016 | 49 | |
| javascript.builtins.Array.@@unscopables π | Firefox | 8/2/2016 | Safari | 9/20/2016 | 49 | |
| javascript.builtins.Array.Array π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.at π | Firefox | 7/13/2021 | Safari | 3/14/2022 | 244 | |
| javascript.builtins.Array.concat π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.copyWithin π | Firefox | 9/2/2014 | Safari | 9/30/2015 | 393 | |
| javascript.builtins.Array.entries π | Firefox | 3/18/2014 | Safari | 10/16/2014 | 212 | |
| javascript.builtins.Array.every π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| javascript.builtins.Array.fill π | Firefox | 7/22/2014 | Safari | 10/16/2014 | 86 | |
| javascript.builtins.Array.filter π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| javascript.builtins.Array.find π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Array.findIndex π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Array.findLast π | Safari | 3/14/2022 | Firefox | 8/23/2022 | 162 | |
| javascript.builtins.Array.findLastIndex π | Safari | 3/14/2022 | Firefox | 8/23/2022 | 162 | |
| javascript.builtins.Array.flat π | Firefox | 9/5/2018 | Safari | 9/17/2018 | 12 | |
| javascript.builtins.Array.flatMap π | Firefox | 9/5/2018 | Safari | 9/17/2018 | 12 | |
| javascript.builtins.Array.forEach π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| javascript.builtins.Array.from π | Firefox | 9/2/2014 | Safari | 9/30/2015 | 393 | |
| javascript.builtins.Array.fromAsync π | Safari | 3/27/2023 | Firefox | 7/4/2023 | 99 | |
| javascript.builtins.Array.includes π | Safari | 9/30/2015 | Firefox | 12/15/2015 | 76 | |
| javascript.builtins.Array.indexOf π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| javascript.builtins.Array.isArray π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| javascript.builtins.Array.join π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.keys π | Firefox | 3/18/2014 | Safari | 10/16/2014 | 212 | |
| javascript.builtins.Array.lastIndexOf π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| javascript.builtins.Array.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.map π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| javascript.builtins.Array.of π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| javascript.builtins.Array.pop π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.push π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.reduce π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| javascript.builtins.Array.reduceRight π | Firefox | 6/17/2008 | Safari | 6/8/2009 | 356 | |
| javascript.builtins.Array.reverse π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.shift π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.slice π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.some π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| javascript.builtins.Array.sort π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.sort.stable_sorting | Firefox | 6/17/2008 | Safari | 3/27/2017 | 3205 | |
| javascript.builtins.Array.splice π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: From Internet Explorer 5.5 through 8, all elements of the array will not be deleted if deleteCount is omitted. This behavior was fixed in Internet Explorer 9. |
| javascript.builtins.Array.toLocaleString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.toLocaleString.locales_parameter | Safari | 10/22/2013 | Firefox | 3/7/2017 | 1232 | Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Array.toLocaleString.options_parameter | Safari | 10/22/2013 | Firefox | 3/7/2017 | 1232 | |
| javascript.builtins.Array.toReversed π | Safari | 9/12/2022 | Firefox | 7/4/2023 | 295 | |
| javascript.builtins.Array.toSorted π | Safari | 9/12/2022 | Firefox | 7/4/2023 | 295 | |
| javascript.builtins.Array.toSpliced π | Safari | 9/12/2022 | Firefox | 7/4/2023 | 295 | |
| javascript.builtins.Array.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.unshift π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Array.values π | Safari | 9/30/2015 | Firefox | 5/9/2018 | 952 | |
| javascript.builtins.Array.with π | Safari | 9/12/2022 | Firefox | 7/4/2023 | 295 | |
| javascript.builtins.ArrayBuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.ArrayBuffer.@@species π | Firefox | 8/2/2016 | Safari | 9/20/2016 | 49 | |
| javascript.builtins.ArrayBuffer.ArrayBuffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.ArrayBuffer.ArrayBuffer.maxByteLength_option π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| javascript.builtins.ArrayBuffer.byteLength π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.ArrayBuffer.detached π | Firefox | 1/23/2024 | Safari | 3/5/2024 | 42 | |
| javascript.builtins.ArrayBuffer.isView π | Safari | 10/22/2013 | Firefox | 4/29/2014 | 189 | |
| javascript.builtins.ArrayBuffer.maxByteLength π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| javascript.builtins.ArrayBuffer.resizable π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| javascript.builtins.ArrayBuffer.resize π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| javascript.builtins.ArrayBuffer.slice π | Safari | 7/20/2011 | Firefox | 4/24/2012 | 279 | Firefox: The non-standard ArrayBuffer.slice() method has been removed in Firefox 53 (but the standardized version ArrayBuffer.prototype.slice() is kept.Firefox for Android: The non-standard ArrayBuffer.slice() method has been removed in Firefox for Android 53 (but the standardized version ArrayBuffer.prototype.slice() is kept. |
| javascript.builtins.ArrayBuffer.transfer π | Firefox | 1/23/2024 | Safari | 3/5/2024 | 42 | |
| javascript.builtins.ArrayBuffer.transferToFixedLength π | Firefox | 1/23/2024 | Safari | 3/5/2024 | 42 | |
| javascript.builtins.AsyncFunction π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| javascript.builtins.AsyncFunction.AsyncFunction π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| javascript.builtins.AsyncGenerator π | Firefox | 8/8/2017 | Safari | 9/17/2018 | 405 | |
| javascript.builtins.AsyncGenerator.next π | Firefox | 8/8/2017 | Safari | 9/17/2018 | 405 | |
| javascript.builtins.AsyncGenerator.return π | Firefox | 8/8/2017 | Safari | 9/17/2018 | 405 | |
| javascript.builtins.AsyncGenerator.throw π | Firefox | 8/8/2017 | Safari | 9/17/2018 | 405 | |
| javascript.builtins.AsyncGeneratorFunction π | Firefox | 8/8/2017 | Safari | 9/17/2018 | 405 | |
| javascript.builtins.AsyncGeneratorFunction.AsyncGeneratorFunction π | Firefox | 8/8/2017 | Safari | 9/17/2018 | 405 | |
| javascript.builtins.AsyncIterator π | Firefox | 11/14/2017 | Safari | 4/12/2018 | 149 | |
| javascript.builtins.AsyncIterator.@@asyncIterator π | Firefox | 11/14/2017 | Safari | 4/12/2018 | 149 | |
| javascript.builtins.Atomics π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | Safari: Before Safari 16.4, Atomics is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.Safari on iOS: Before Safari on iOS 16.4, Atomics is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.WebView on iOS: Before WebView on iOS 16.4, Atomics is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP. |
| javascript.builtins.Atomics.add π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.and π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.compareExchange π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.exchange π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.isLockFree π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.load π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.notify π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.or π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.store π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.sub π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.wait π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.Atomics.xor π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | |
| javascript.builtins.BigInt π | Firefox | 7/9/2019 | Safari | 9/16/2020 | 435 | |
| javascript.builtins.BigInt.BigInt π | Firefox | 7/9/2019 | Safari | 9/16/2020 | 435 | |
| javascript.builtins.BigInt.asIntN π | Firefox | 7/9/2019 | Safari | 9/16/2020 | 435 | |
| javascript.builtins.BigInt.asUintN π | Firefox | 7/9/2019 | Safari | 9/16/2020 | 435 | |
| javascript.builtins.BigInt.toLocaleString π | Firefox | 7/9/2019 | Safari | 9/16/2020 | 435 | |
| javascript.builtins.BigInt.toLocaleString.locales_parameter | Firefox | 10/22/2019 | Safari | 9/16/2020 | 330 | Deno: Only the locale data for en-US is available. |
| javascript.builtins.BigInt.toLocaleString.options_parameter | Firefox | 10/22/2019 | Safari | 9/16/2020 | 330 | |
| javascript.builtins.BigInt.toString π | Firefox | 7/9/2019 | Safari | 9/16/2020 | 435 | |
| javascript.builtins.BigInt.valueOf π | Firefox | 7/9/2019 | Safari | 9/16/2020 | 435 | |
| javascript.builtins.BigInt64Array π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| javascript.builtins.BigInt64Array.BigInt64Array π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| javascript.builtins.BigUint64Array π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| javascript.builtins.BigUint64Array.BigUint64Array π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| javascript.builtins.Boolean π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Boolean.Boolean π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Boolean.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Boolean.valueOf π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.DataView π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.DataView π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.DataView.sharedarraybuffer_support | Firefox | 7/28/2020 | Safari | 12/13/2021 | 503 | |
| javascript.builtins.DataView.buffer π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.byteLength π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.byteOffset π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.getBigInt64 π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| javascript.builtins.DataView.getBigUint64 π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| javascript.builtins.DataView.getFloat16 π | Firefox | 8/6/2024 | Safari | 12/11/2024 | 127 | |
| javascript.builtins.DataView.getFloat32 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.getFloat64 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.getInt16 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.getInt32 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.getInt8 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.getUint16 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.getUint32 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.getUint8 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.setBigInt64 π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| javascript.builtins.DataView.setBigUint64 π | Firefox | 7/9/2019 | Safari | 9/20/2021 | 804 | |
| javascript.builtins.DataView.setFloat16 π | Firefox | 8/6/2024 | Safari | 12/11/2024 | 127 | |
| javascript.builtins.DataView.setFloat32 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.setFloat64 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.setInt16 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.setInt32 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.setInt8 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.setUint16 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.setUint32 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.DataView.setUint8 π | Safari | 7/20/2011 | Firefox | 8/28/2012 | 405 | |
| javascript.builtins.Date π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: The ISO8601 Date Format is not supported in Internet Explorer 8 or earlier. |
| javascript.builtins.Date.@@toPrimitive π | Firefox | 1/26/2016 | Safari | 9/20/2016 | 238 | |
| javascript.builtins.Date.Date π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.UTC π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.UTC.optional_monthIndex | Firefox | 6/13/2017 | Safari | 9/17/2018 | 461 | |
| javascript.builtins.Date.getDate π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getDay π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getFullYear π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getHours π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getMilliseconds π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getMinutes π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getMonth π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getSeconds π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getTime π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getTimezoneOffset π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getUTCDate π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getUTCDay π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getUTCFullYear π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getUTCHours π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getUTCMilliseconds π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getUTCMinutes π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getUTCMonth π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getUTCSeconds π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.getYear π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.now π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| javascript.builtins.Date.parse π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.parse.iso_8601 | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Date.setDate π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setFullYear π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setHours π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setMilliseconds π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setMinutes π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setMonth π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setSeconds π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setTime π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setUTCDate π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setUTCFullYear π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setUTCHours π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setUTCMilliseconds π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setUTCMinutes π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setUTCMonth π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setUTCSeconds π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.setYear π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.toDateString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.toGMTString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.toISOString π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| javascript.builtins.Date.toJSON π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| javascript.builtins.Date.toLocaleDateString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.toLocaleDateString.iana_time_zone_names | Safari | 10/22/2013 | Firefox | 3/7/2017 | 1232 | |
| javascript.builtins.Date.toLocaleDateString.locales_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Date.toLocaleDateString.options_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Date.toLocaleString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.toLocaleString.iana_time_zone_names | Safari | 10/22/2013 | Firefox | 3/7/2017 | 1232 | |
| javascript.builtins.Date.toLocaleString.locales_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Date.toLocaleString.options_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Date.toLocaleTimeString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.toLocaleTimeString.iana_time_zone_names | Safari | 10/22/2013 | Firefox | 3/7/2017 | 1232 | |
| javascript.builtins.Date.toLocaleTimeString.locales_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Date.toLocaleTimeString.options_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Date.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.toTimeString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.toUTCString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Date.valueOf π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Error π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Error.Error π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Error.Error.options_cause_parameter π | Firefox | 8/10/2021 | Safari | 9/20/2021 | 41 | |
| javascript.builtins.Error.cause π | Firefox | 8/10/2021 | Safari | 9/20/2021 | 41 | |
| javascript.builtins.Error.message π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Error.name π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Error.stack | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | |
| javascript.builtins.Error.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.EvalError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.EvalError.EvalError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.FinalizationRegistry π | Firefox | 7/28/2020 | Safari | 4/26/2021 | 272 | |
| javascript.builtins.FinalizationRegistry.FinalizationRegistry π | Firefox | 7/28/2020 | Safari | 4/26/2021 | 272 | |
| javascript.builtins.FinalizationRegistry.register π | Firefox | 7/28/2020 | Safari | 4/26/2021 | 272 | |
| javascript.builtins.FinalizationRegistry.unregister π | Firefox | 7/28/2020 | Safari | 4/26/2021 | 272 | |
| javascript.builtins.Float16Array π | Firefox | 8/6/2024 | Safari | 12/11/2024 | 127 | |
| javascript.builtins.Float16Array.Float16Array π | Firefox | 8/6/2024 | Safari | 12/11/2024 | 127 | |
| javascript.builtins.Float32Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Float32Array.Float32Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Float32Array.Float32Array.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.Float32Array.Float32Array.iterable_allowed | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.Float64Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Float64Array.Float64Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Float64Array.Float64Array.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.Float64Array.Float64Array.iterable_allowed | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.Function π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Function.@@hasInstance π | Safari | 9/20/2016 | Firefox | 11/15/2016 | 56 | |
| javascript.builtins.Function.Function π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Function.apply π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Function.apply.generic_arrays_as_arguments | Firefox | 3/22/2011 | Safari | 7/25/2012 | 491 | |
| javascript.builtins.Function.arguments | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Function.bind π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Function.call π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Node.js: When calling this method, thisArg does not default to the global object. |
| javascript.builtins.Function.caller | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.Function.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Function.length.configurable_true | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.Function.name π | Firefox | 11/9/2004 | Safari | 7/25/2012 | 2815 | |
| javascript.builtins.Function.name.configurable_true | Firefox | 5/12/2015 | Safari | 9/20/2016 | 497 | |
| javascript.builtins.Function.name.inferred_names | Safari | 9/20/2016 | Firefox | 4/19/2017 | 211 | Edge: Names for functions defined in a dictionary are properly assigned; however, anonymous functions defined on a var/let variable assignment have blank names. |
| javascript.builtins.Function.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Function.toString.toString_revision | Firefox | 6/13/2017 | Safari | 9/18/2023 | 2288 | |
| javascript.builtins.Generator π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| javascript.builtins.Generator.next π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| javascript.builtins.Generator.return π | Firefox | 5/12/2015 | Safari | 9/20/2016 | 497 | |
| javascript.builtins.Generator.throw π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| javascript.builtins.GeneratorFunction π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| javascript.builtins.GeneratorFunction.GeneratorFunction π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| javascript.builtins.Infinity π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Int16Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Int16Array.Int16Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Int16Array.Int16Array.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.Int16Array.Int16Array.iterable_allowed | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.Int32Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Int32Array.Int32Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Int32Array.Int32Array.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.Int32Array.Int32Array.iterable_allowed | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.Int8Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Int8Array.Int8Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Int8Array.Int8Array.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.Int8Array.Int8Array.iterable_allowed | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.Intl π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.Collator π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the Collator() constructor for more details. |
| javascript.builtins.Intl.Collator.Collator π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the Collator instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.Collator.Collator.options_caseFirst_parameter | Firefox | 8/8/2017 | Safari | 9/19/2017 | 42 | |
| javascript.builtins.Intl.Collator.Collator.options_collation_parameter | Firefox | 1/26/2021 | Safari | 4/26/2021 | 90 | |
| javascript.builtins.Intl.Collator.Collator.options_ignorePunctuation_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.Collator.Collator.options_localeMatcher_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.Collator.Collator.options_numeric_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.Collator.Collator.options_sensitivity_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.Collator.Collator.options_usage_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.Collator.compare π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the Collator() constructor for more details. |
| javascript.builtins.Intl.Collator.resolvedOptions π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the Collator() constructor for more details. |
| javascript.builtins.Intl.Collator.supportedLocalesOf π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.DateTimeFormat π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details. |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the DateTimeFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.IntlLegacyConstructedSymbol π | Firefox | 6/13/2017 | Safari | 4/26/2021 | 1413 | Chrome: The fallback symbol property has description IntlFallback.Chrome Android: The fallback symbol property has description IntlFallback.Edge: The fallback symbol property has description IntlFallback.Node.js: The fallback symbol property has description IntlFallback.Quest Browser: The fallback symbol property has description IntlFallback.Opera: The fallback symbol property has description IntlFallback.Opera Android: The fallback symbol property has description IntlFallback.Samsung Internet: The fallback symbol property has description IntlFallback.WebView Android: The fallback symbol property has description IntlFallback. |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.locales_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the DateTimeFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_calendar_parameter | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_dateStyle_parameter | Firefox | 7/28/2020 | Safari | 4/26/2021 | 272 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_dayPeriod_parameter | Safari | 4/26/2021 | Firefox | 7/13/2021 | 78 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_fractionalSecondDigits_parameter | Firefox | 12/15/2020 | Safari | 4/26/2021 | 132 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_hourCycle_parameter | Firefox | 1/23/2018 | Safari | 9/19/2019 | 604 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_numberingSystem_parameter | Firefox | 5/5/2020 | Safari | 4/26/2021 | 356 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeStyle_parameter | Firefox | 7/28/2020 | Safari | 4/26/2021 | 272 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZoneName_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZoneName_parameter.extended_values | Firefox | 8/10/2021 | Safari | 3/14/2022 | 216 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZone_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZone_parameter.iana_time_zones | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.Intl.DateTimeFormat.format π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details. |
| javascript.builtins.Intl.DateTimeFormat.formatRange π | Safari | 4/26/2021 | Firefox | 8/10/2021 | 106 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details. |
| javascript.builtins.Intl.DateTimeFormat.formatRangeToParts π | Safari | 4/26/2021 | Firefox | 8/10/2021 | 106 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details. |
| javascript.builtins.Intl.DateTimeFormat.formatToParts π | Firefox | 1/24/2017 | Safari | 9/19/2017 | 238 | Chrome: Before version 71, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623.Chrome Android: Before version 71, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623.Node.js: Before version 12.0.0, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 12.0.0 and later use the specification defined dayPeriod. See bug 41402623.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details.Quest Browser: Before version 6.0, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623.Opera: Before version 58, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 58 and later use the specification defined dayPeriod. See bug 41402623.Opera Android: Before version 50, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 50 and later use the specification defined dayPeriod. See bug 41402623.Samsung Internet: Before version 71, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623.WebView Android: Before version 71, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623. |
| javascript.builtins.Intl.DateTimeFormat.resolvedOptions π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details. |
| javascript.builtins.Intl.DateTimeFormat.resolvedOptions.computed_timezone | Safari | 9/20/2016 | Firefox | 4/19/2017 | 211 | |
| javascript.builtins.Intl.DateTimeFormat.supportedLocalesOf π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.DisplayNames π | Firefox | 2/23/2021 | Safari | 4/26/2021 | 62 | |
| javascript.builtins.Intl.DisplayNames.DisplayNames π | Firefox | 2/23/2021 | Safari | 4/26/2021 | 62 | |
| javascript.builtins.Intl.DisplayNames.of π | Firefox | 2/23/2021 | Safari | 4/26/2021 | 62 | |
| javascript.builtins.Intl.DisplayNames.resolvedOptions π | Firefox | 2/23/2021 | Safari | 4/26/2021 | 62 | |
| javascript.builtins.Intl.DisplayNames.supportedLocalesOf π | Firefox | 2/23/2021 | Safari | 4/26/2021 | 62 | |
| javascript.builtins.Intl.ListFormat π | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the ListFormat() constructor for more details.Safari: Only available on macOS Big Sur (11) and above. |
| javascript.builtins.Intl.ListFormat.ListFormat π | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the ListFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.Safari: Only available on macOS Big Sur (11) and above. |
| javascript.builtins.Intl.ListFormat.format π | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the ListFormat() constructor for more details.Safari: Only available on macOS Big Sur (11) and above. |
| javascript.builtins.Intl.ListFormat.formatToParts π | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the ListFormat() constructor for more details.Safari: Only available on macOS Big Sur (11) and above. |
| javascript.builtins.Intl.ListFormat.resolvedOptions π | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the ListFormat() constructor for more details.Safari: Only available on macOS Big Sur (11) and above. |
| javascript.builtins.Intl.ListFormat.supportedLocalesOf π | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.Safari: Only available on macOS Big Sur (11) and above. |
| javascript.builtins.Intl.Locale π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.Locale π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.baseName π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.calendar π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.caseFirst π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.collation π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.hourCycle π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.language π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.maximize π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.minimize π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.numberingSystem π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.numeric π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.region π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.script π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.Locale.toString π | Firefox | 4/7/2020 | Safari | 9/16/2020 | 162 | |
| javascript.builtins.Intl.NumberFormat π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the NumberFormat() constructor for more details. |
| javascript.builtins.Intl.NumberFormat.NumberFormat π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.IntlLegacyConstructedSymbol π | Firefox | 6/13/2017 | Safari | 4/26/2021 | 1413 | Chrome: The fallback symbol property has description IntlFallback.Chrome Android: The fallback symbol property has description IntlFallback.Edge: The fallback symbol property has description IntlFallback.Node.js: The fallback symbol property has description IntlFallback.Quest Browser: The fallback symbol property has description IntlFallback.Opera: The fallback symbol property has description IntlFallback.Opera Android: The fallback symbol property has description IntlFallback.Samsung Internet: The fallback symbol property has description IntlFallback.WebView Android: The fallback symbol property has description IntlFallback. |
| javascript.builtins.Intl.NumberFormat.NumberFormat.locales_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the NumberFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_compactDisplay_parameter | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currencyDisplay_parameter | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | Safari: Doesn't support currencyDisplay: 'narrowSymbol'.Safari on iOS: Doesn't support currencyDisplay: 'narrowSymbol'.WebView on iOS: Doesn't support currencyDisplay: 'narrowSymbol'. |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currencySign_parameter | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currency_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_localeMatcher_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_maximumFractionDigits_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_maximumSignificantDigits_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_minimumFractionDigits_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_minimumIntegerDigits_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_minimumSignificantDigits_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_notation_parameter | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_numberingSystem_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingIncrement_parameter | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingMode_parameter | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingPriority_parameter | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_signDisplay_parameter | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_signDisplay_parameter.negative | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_style_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_trailingZeroDisplay_parameter | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_unitDisplay_parameter | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_unit_parameter | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_useGrouping_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the NumberFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_useGrouping_parameter.string_values | Safari | 3/27/2023 | Firefox | 8/1/2023 | 127 | |
| javascript.builtins.Intl.NumberFormat.format π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Edge: Before Edge 18, numbers are rounded to 15 decimal digits. For example, new Intl.NumberFormat('en-US').format(1000000000000005) returns "1,000,000,000,000,010".Internet Explorer: In Internet Explorer 11, numbers are rounded to 15 decimal digits. For example, new Intl.NumberFormat('en-US').format(1000000000000005) returns "1,000,000,000,000,010".Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the NumberFormat() constructor for more details. |
| javascript.builtins.Intl.NumberFormat.format.number_parameter-string_decimal | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.NumberFormat.formatRange π | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.NumberFormat.formatRangeToParts π | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.NumberFormat.formatToParts π | Firefox | 1/23/2018 | Safari | 9/19/2019 | 604 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the NumberFormat() constructor for more details. |
| javascript.builtins.Intl.NumberFormat.resolvedOptions π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the NumberFormat() constructor for more details. |
| javascript.builtins.Intl.NumberFormat.supportedLocalesOf π | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.PluralRules π | Firefox | 1/23/2018 | Safari | 9/19/2019 | 604 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the PluralRules() constructor for more details. |
| javascript.builtins.Intl.PluralRules.PluralRules π | Firefox | 1/23/2018 | Safari | 9/19/2019 | 604 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the PluralRules instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.PluralRules.PluralRules.options_parameter | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_roundingIncrement_parameter | Firefox | 8/1/2023 | Safari | 12/11/2023 | 132 | |
| javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_roundingMode_parameter | Firefox | 8/1/2023 | Safari | 12/11/2023 | 132 | |
| javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_roundingPriority_parameter | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.PluralRules.resolvedOptions π | Firefox | 1/23/2018 | Safari | 9/19/2019 | 604 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the PluralRules() constructor for more details. |
| javascript.builtins.Intl.PluralRules.select π | Firefox | 1/23/2018 | Safari | 9/19/2019 | 604 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the PluralRules() constructor for more details. |
| javascript.builtins.Intl.PluralRules.selectRange π | Safari | 3/14/2022 | Firefox | 8/1/2023 | 505 | |
| javascript.builtins.Intl.PluralRules.supportedLocalesOf π | Firefox | 1/23/2018 | Safari | 9/19/2019 | 604 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the PluralRules() constructor for more details. |
| javascript.builtins.Intl.RelativeTimeFormat π | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the RelativeTimeFormat() constructor for more details. |
| javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat π | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | |
| javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.locales_parameter | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the RelativeTimeFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.options_parameter.options_localeMatcher_parameter | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | |
| javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.options_parameter.options_numberingSystem_parameter | Firefox | 5/5/2020 | Safari | 9/16/2020 | 134 | |
| javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.options_parameter.options_numeric_parameter | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | |
| javascript.builtins.Intl.RelativeTimeFormat.format π | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the RelativeTimeFormat() constructor for more details. |
| javascript.builtins.Intl.RelativeTimeFormat.formatToParts π | Firefox | 10/22/2019 | Safari | 9/16/2020 | 330 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the RelativeTimeFormat() constructor for more details. |
| javascript.builtins.Intl.RelativeTimeFormat.resolvedOptions π | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the RelativeTimeFormat() constructor for more details. |
| javascript.builtins.Intl.RelativeTimeFormat.supportedLocalesOf π | Firefox | 1/29/2019 | Safari | 9/16/2020 | 596 | Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Intl.Segmenter π | Safari | 4/26/2021 | Firefox | 4/16/2024 | 1086 | |
| javascript.builtins.Intl.Segmenter.Segmenter π | Safari | 4/26/2021 | Firefox | 4/16/2024 | 1086 | |
| javascript.builtins.Intl.Segmenter.resolvedOptions π | Safari | 4/26/2021 | Firefox | 4/16/2024 | 1086 | |
| javascript.builtins.Intl.Segmenter.segment π | Safari | 4/26/2021 | Firefox | 4/16/2024 | 1086 | |
| javascript.builtins.Intl.Segmenter.supportedLocalesOf π | Safari | 4/26/2021 | Firefox | 4/16/2024 | 1086 | |
| javascript.builtins.Intl.Segments π | Safari | 4/26/2021 | Firefox | 4/16/2024 | 1086 | |
| javascript.builtins.Intl.Segments.@@iterator π | Safari | 4/26/2021 | Firefox | 4/16/2024 | 1086 | |
| javascript.builtins.Intl.Segments.containing π | Safari | 4/26/2021 | Firefox | 4/16/2024 | 1086 | |
| javascript.builtins.Intl.getCanonicalLocales π | Firefox | 8/2/2016 | Safari | 3/27/2017 | 237 | |
| javascript.builtins.Intl.supportedValuesOf π | Firefox | 10/5/2021 | Safari | 3/14/2022 | 160 | |
| javascript.builtins.Iterator π | Firefox | 11/20/2012 | Safari | 9/20/2016 | 1400 | |
| javascript.builtins.Iterator.@@iterator π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used. |
| javascript.builtins.JSON π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| javascript.builtins.JSON.json_superset | Firefox | 9/5/2018 | Safari | 9/17/2018 | 12 | |
| javascript.builtins.JSON.parse π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| javascript.builtins.JSON.stringify π | Safari | 6/8/2009 | Firefox | 6/30/2009 | 22 | |
| javascript.builtins.JSON.stringify.well_formed_stringify | Firefox | 12/11/2018 | Safari | 3/25/2019 | 104 | |
| javascript.builtins.Map π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | |
| javascript.builtins.Map.@@iterator π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used. |
| javascript.builtins.Map.@@species π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| javascript.builtins.Map.Map π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | |
| javascript.builtins.Map.Map.iterable_allowed | Firefox | 6/5/2012 | Safari | 9/30/2015 | 1212 | |
| javascript.builtins.Map.Map.null_allowed | Firefox | 3/31/2015 | Safari | 9/30/2015 | 183 | |
| javascript.builtins.Map.clear π | Firefox | 2/19/2013 | Safari | 10/16/2014 | 604 | |
| javascript.builtins.Map.delete π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | |
| javascript.builtins.Map.entries π | Firefox | 4/2/2013 | Safari | 10/16/2014 | 562 | |
| javascript.builtins.Map.forEach π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Map.get π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | |
| javascript.builtins.Map.groupBy π | Firefox | 10/24/2023 | Safari | 3/5/2024 | 133 | |
| javascript.builtins.Map.has π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | |
| javascript.builtins.Map.key_equality_for_zeros | Firefox | 4/29/2014 | Safari | 9/30/2015 | 519 | |
| javascript.builtins.Map.keys π | Firefox | 4/2/2013 | Safari | 10/16/2014 | 562 | |
| javascript.builtins.Map.set π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | Internet Explorer: Returns 'undefined' instead of the 'Map' object. |
| javascript.builtins.Map.size π | Firefox | 2/19/2013 | Safari | 10/16/2014 | 604 | Firefox: From Firefox 13 to Firefox 18, the size property was implemented as a Map.prototype.size() method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification.Firefox for Android: From Firefox for Android 14 to Firefox for Android 18, the size property was implemented as a Map.prototype.size() method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification. |
| javascript.builtins.Map.values π | Firefox | 4/2/2013 | Safari | 10/16/2014 | 562 | |
| javascript.builtins.Math π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.E π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.LN10 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.LN2 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.LOG10E π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.LOG2E π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.PI π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.SQRT1_2 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.SQRT2 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.abs π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.acos π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.acosh π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.asin π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.asinh π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.atan π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.atan2 π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.atanh π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.cbrt π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.ceil π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.clz32 π | Safari | 10/22/2013 | Firefox | 7/22/2014 | 273 | |
| javascript.builtins.Math.cos π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.cosh π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.exp π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.expm1 π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.f16round π | Firefox | 8/6/2024 | Safari | 12/11/2024 | 127 | |
| javascript.builtins.Math.floor π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.fround π | Firefox | 12/10/2013 | Safari | 10/16/2014 | 310 | |
| javascript.builtins.Math.hypot π | Firefox | 2/4/2014 | Safari | 10/16/2014 | 254 | |
| javascript.builtins.Math.imul π | Firefox | 4/2/2013 | Safari | 10/22/2013 | 203 | |
| javascript.builtins.Math.log π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.log10 π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.log1p π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.log2 π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.max π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.min π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.pow π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.random π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.round π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.sign π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| javascript.builtins.Math.sin π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.sinh π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.sqrt π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.tan π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Math.tanh π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Math.trunc π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.NaN π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Number π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Number.EPSILON π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| javascript.builtins.Number.MAX_SAFE_INTEGER π | Firefox | 7/22/2014 | Safari | 9/30/2015 | 435 | |
| javascript.builtins.Number.MAX_VALUE π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Number.MIN_SAFE_INTEGER π | Firefox | 7/22/2014 | Safari | 9/30/2015 | 435 | |
| javascript.builtins.Number.MIN_VALUE π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Number.NEGATIVE_INFINITY π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Number.NaN π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Number.Number π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Number.POSITIVE_INFINITY π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Number.isFinite π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| javascript.builtins.Number.isInteger π | Firefox | 10/9/2012 | Safari | 9/30/2015 | 1086 | |
| javascript.builtins.Number.isNaN π | Firefox | 8/28/2012 | Safari | 9/30/2015 | 1128 | |
| javascript.builtins.Number.isSafeInteger π | Firefox | 9/2/2014 | Safari | 9/30/2015 | 393 | |
| javascript.builtins.Number.parseFloat π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| javascript.builtins.Number.parseInt π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| javascript.builtins.Number.toExponential π | Firefox | 11/9/2004 | Safari | 4/29/2005 | 171 | |
| javascript.builtins.Number.toFixed π | Firefox | 11/9/2004 | Safari | 4/29/2005 | 171 | |
| javascript.builtins.Number.toLocaleString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Edge: Before Edge 18, numbers are rounded to 15 decimal digits. For example, (1000000000000005).toLocaleString('en-US') returns "1,000,000,000,000,010".Internet Explorer: In Internet Explorer 11, numbers are rounded to 15 decimal digits. For example, (1000000000000005).toLocaleString('en-US') returns "1,000,000,000,000,010". |
| javascript.builtins.Number.toLocaleString.locales_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.Number.toLocaleString.options_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.Number.toPrecision π | Firefox | 11/9/2004 | Safari | 4/29/2005 | 171 | |
| javascript.builtins.Number.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Number.valueOf π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Object π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Object.Object π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Object.assign π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.builtins.Object.constructor π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Object.create π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| javascript.builtins.Object.defineGetter π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Firefox: Starting with Firefox 48, this method can no longer be called at the global scope without any object. A TypeError will be thrown otherwise. Previously, the global object was used in these cases automatically, but this is no longer the case. |
| javascript.builtins.Object.defineProperties π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| javascript.builtins.Object.defineProperty π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | Internet Explorer: In Internet Explorer 8, this was only supported on DOM objects and with some non-standard behaviors. This was later fixed in Internet Explorer 9.Safari: Also supported in Safari 5, but not on DOM objects.Safari on iOS: Also supported in Safari for iOS 4.2, but not on DOM objects.WebView on iOS: Also supported in Safari for iOS 4.2, but not on DOM objects. |
| javascript.builtins.Object.defineSetter π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | Firefox: Starting with Firefox 48, this method can no longer be called at the global scope without any object. A TypeError will be thrown otherwise. Previously, the global object was used in these cases automatically, but this is no longer the case. |
| javascript.builtins.Object.entries π | Firefox | 6/7/2016 | Safari | 3/27/2017 | 293 | |
| javascript.builtins.Object.freeze π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Object.fromEntries π | Firefox | 10/23/2018 | Safari | 3/25/2019 | 153 | |
| javascript.builtins.Object.getOwnPropertyDescriptor π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | Internet Explorer: In Internet Explorer 8, this was only supported on DOM objects and with some non-standard behaviors. This was later fixed in Internet Explorer 9. |
| javascript.builtins.Object.getOwnPropertyDescriptors π | Safari | 9/20/2016 | Firefox | 11/15/2016 | 56 | |
| javascript.builtins.Object.getOwnPropertyNames π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| javascript.builtins.Object.getOwnPropertySymbols π | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | |
| javascript.builtins.Object.getPrototypeOf π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| javascript.builtins.Object.groupBy π | Firefox | 10/24/2023 | Safari | 3/5/2024 | 133 | |
| javascript.builtins.Object.hasOwn π | Firefox | 9/7/2021 | Safari | 3/14/2022 | 188 | |
| javascript.builtins.Object.hasOwnProperty π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.Object.is π | Firefox | 6/25/2013 | Safari | 9/30/2015 | 827 | |
| javascript.builtins.Object.isExtensible π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Object.isFrozen π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Object.isPrototypeOf π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.Object.isSealed π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Object.keys π | Safari | 6/7/2010 | Firefox | 3/22/2011 | 288 | |
| javascript.builtins.Object.lookupGetter π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.Object.lookupSetter π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.Object.preventExtensions π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Object.preventExtensions.ES2015_behavior | Firefox | 1/13/2015 | Safari | 9/30/2015 | 260 | |
| javascript.builtins.Object.propertyIsEnumerable π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.Object.proto π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.Object.seal π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Object.setPrototypeOf π | Firefox | 7/22/2014 | Safari | 9/30/2015 | 435 | |
| javascript.builtins.Object.toLocaleString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Object.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Object.valueOf π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Object.values π | Firefox | 6/7/2016 | Safari | 3/27/2017 | 293 | |
| javascript.builtins.Promise π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| javascript.builtins.Promise.@@species π | Firefox | 8/2/2016 | Safari | 9/20/2016 | 49 | |
| javascript.builtins.Promise.Promise π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | Firefox: Constructor requires a new operator since version 37.Firefox for Android: Constructor requires a new operator since version 37.Node.js: Constructor requires a new operator since version 4.Safari: Constructor requires a new operator since version 10.Safari on iOS: Constructor requires a new operator since version 10.WebView on iOS: Constructor requires a new operator since version 10. |
| javascript.builtins.Promise.all π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| javascript.builtins.Promise.allSettled π | Safari | 9/19/2019 | Firefox | 12/10/2019 | 82 | |
| javascript.builtins.Promise.any π | Firefox | 7/28/2020 | Safari | 9/16/2020 | 50 | |
| javascript.builtins.Promise.catch π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| javascript.builtins.Promise.finally π | Firefox | 1/23/2018 | Safari | 4/12/2018 | 79 | |
| javascript.builtins.Promise.race π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| javascript.builtins.Promise.reject π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| javascript.builtins.Promise.resolve π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| javascript.builtins.Promise.then π | Firefox | 4/29/2014 | Safari | 10/16/2014 | 170 | |
| javascript.builtins.Promise.try π | Safari | 12/11/2024 | Firefox | 1/7/2025 | 27 | |
| javascript.builtins.Promise.withResolvers π | Firefox | 12/19/2023 | Safari | 3/5/2024 | 77 | |
| javascript.builtins.Proxy π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.Proxy π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.handler.apply π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.handler.construct π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.handler.defineProperty π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.handler.deleteProperty π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.handler.get π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.handler.getOwnPropertyDescriptor π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.handler.getPrototypeOf π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.Proxy.handler.has π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.handler.isExtensible π | Firefox | 7/22/2014 | Safari | 9/20/2016 | 791 | |
| javascript.builtins.Proxy.handler.ownKeys π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | Firefox: In Firefox 42, the implementation got updated to reflect the final ES2015 specification: The result is now checked if it is an array and if the array elements are either of type string or of type symbol. Enumerating duplicate own property names is not a failure anymore.Firefox for Android: In Firefox for Android 42, the implementation got updated to reflect the final ES2015 specification: The result is now checked if it is an array and if the array elements are either of type string or of type symbol. Enumerating duplicate own property names is not a failure anymore. |
| javascript.builtins.Proxy.handler.preventExtensions π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | |
| javascript.builtins.Proxy.handler.set π | Firefox | 1/8/2013 | Safari | 9/20/2016 | 1351 | |
| javascript.builtins.Proxy.handler.setPrototypeOf π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.Proxy.revocable π | Firefox | 12/1/2014 | Safari | 9/20/2016 | 659 | |
| javascript.builtins.RangeError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RangeError.RangeError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.ReferenceError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.ReferenceError.ReferenceError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Reflect π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.apply π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.construct π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.defineProperty π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.deleteProperty π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.get π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.getOwnPropertyDescriptor π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.getPrototypeOf π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.has π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.isExtensible π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.ownKeys π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.preventExtensions π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.set π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.Reflect.setPrototypeOf π | Firefox | 11/3/2015 | Safari | 9/20/2016 | 322 | |
| javascript.builtins.RegExp π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.@@match π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.RegExp.@@matchAll π | Firefox | 5/21/2019 | Safari | 9/19/2019 | 121 | |
| javascript.builtins.RegExp.@@replace π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.RegExp.@@search π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.RegExp.@@species π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.RegExp.@@split π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.RegExp.RegExp π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.compile π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| javascript.builtins.RegExp.dotAll π | Safari | 4/12/2018 | Firefox | 6/30/2020 | 810 | |
| javascript.builtins.RegExp.escape π | Safari | 12/11/2024 | Firefox | 1/7/2025 | 27 | |
| javascript.builtins.RegExp.exec π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.flags π | Firefox | 3/31/2015 | Safari | 9/30/2015 | 183 | |
| javascript.builtins.RegExp.global π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.global.prototype_accessor | Safari | 4/15/2005 | Firefox | 5/12/2015 | 3679 | |
| javascript.builtins.RegExp.hasIndices π | Firefox | 4/19/2021 | Safari | 9/20/2021 | 154 | |
| javascript.builtins.RegExp.ignoreCase π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.ignoreCase.prototype_accessor | Safari | 4/15/2005 | Firefox | 5/12/2015 | 3679 | |
| javascript.builtins.RegExp.input π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.RegExp.lastIndex π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.lastMatch π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.RegExp.lastParen π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.RegExp.leftContext π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.RegExp.multiline π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.multiline.prototype_accessor | Safari | 4/15/2005 | Firefox | 5/12/2015 | 3679 | |
| javascript.builtins.RegExp.n π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.rightContext π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.RegExp.source π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.source.empty_regex_string | Safari | 6/7/2010 | Firefox | 5/12/2015 | 1800 | |
| javascript.builtins.RegExp.source.escaping | Safari | 7/25/2012 | Firefox | 5/12/2015 | 1021 | |
| javascript.builtins.RegExp.source.prototype_accessor | Safari | 4/15/2005 | Firefox | 9/22/2015 | 3812 | |
| javascript.builtins.RegExp.sticky π | Firefox | 6/17/2008 | Safari | 9/20/2016 | 3017 | |
| javascript.builtins.RegExp.sticky.anchored_sticky_flag | Firefox | 1/26/2016 | Safari | 9/20/2016 | 238 | |
| javascript.builtins.RegExp.sticky.prototype_accessor | Firefox | 5/12/2015 | Safari | 9/20/2016 | 497 | |
| javascript.builtins.RegExp.test π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.RegExp.toString.escaping | Safari | 7/25/2012 | Firefox | 5/12/2015 | 1021 | |
| javascript.builtins.RegExp.unicode π | Firefox | 4/26/2016 | Safari | 9/20/2016 | 147 | Edge: Case folding is implemented in version 13Node.js: Case folding is implemented in version 8.6.0 |
| javascript.builtins.RegExp.unicodeSets π | Firefox | 8/1/2023 | Safari | 9/18/2023 | 48 | |
| javascript.builtins.Set π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | |
| javascript.builtins.Set.@@iterator π | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used. |
| javascript.builtins.Set.@@species π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| javascript.builtins.Set.Set π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | |
| javascript.builtins.Set.Set.iterable_allowed | Firefox | 6/5/2012 | Safari | 9/30/2015 | 1212 | |
| javascript.builtins.Set.Set.null_allowed | Firefox | 3/31/2015 | Safari | 9/30/2015 | 183 | |
| javascript.builtins.Set.add π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | Internet Explorer: Returns 'undefined' instead of the 'Set' object. |
| javascript.builtins.Set.clear π | Firefox | 2/19/2013 | Safari | 10/16/2014 | 604 | |
| javascript.builtins.Set.delete π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | |
| javascript.builtins.Set.difference π | Safari | 9/18/2023 | Firefox | 6/11/2024 | 267 | |
| javascript.builtins.Set.entries π | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | |
| javascript.builtins.Set.forEach π | Firefox | 10/29/2013 | Safari | 10/16/2014 | 352 | |
| javascript.builtins.Set.has π | Firefox | 6/5/2012 | Safari | 10/16/2014 | 863 | |
| javascript.builtins.Set.intersection π | Safari | 9/18/2023 | Firefox | 6/11/2024 | 267 | |
| javascript.builtins.Set.isDisjointFrom π | Safari | 9/18/2023 | Firefox | 6/11/2024 | 267 | |
| javascript.builtins.Set.isSubsetOf π | Safari | 9/18/2023 | Firefox | 6/11/2024 | 267 | |
| javascript.builtins.Set.isSupersetOf π | Safari | 9/18/2023 | Firefox | 6/11/2024 | 267 | |
| javascript.builtins.Set.key_equality_for_zeros | Firefox | 4/29/2014 | Safari | 9/30/2015 | 519 | |
| javascript.builtins.Set.keys π | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | |
| javascript.builtins.Set.size π | Firefox | 2/19/2013 | Safari | 10/16/2014 | 604 | Firefox: From Firefox 13 to Firefox 18, the size property was implemented as a Set.prototype.size() method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification.Firefox for Android: From Firefox for Android 14 to Firefox for Android 18, the size property was implemented as a Set.prototype.size() method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification. |
| javascript.builtins.Set.symmetricDifference π | Safari | 9/18/2023 | Firefox | 6/11/2024 | 267 | |
| javascript.builtins.Set.union π | Safari | 9/18/2023 | Firefox | 6/11/2024 | 267 | |
| javascript.builtins.Set.values π | Firefox | 9/17/2013 | Safari | 10/16/2014 | 394 | |
| javascript.builtins.SharedArrayBuffer π | Firefox | 7/28/2020 | Safari | 12/13/2021 | 503 | |
| javascript.builtins.SharedArrayBuffer.@@species π | Firefox | 7/28/2020 | Safari | 12/13/2021 | 503 | |
| javascript.builtins.SharedArrayBuffer.SharedArrayBuffer π | Firefox | 7/28/2020 | Safari | 12/13/2021 | 503 | |
| javascript.builtins.SharedArrayBuffer.SharedArrayBuffer.maxByteLength_option π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| javascript.builtins.SharedArrayBuffer.byteLength π | Firefox | 7/28/2020 | Safari | 12/13/2021 | 503 | |
| javascript.builtins.SharedArrayBuffer.grow π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| javascript.builtins.SharedArrayBuffer.growable π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| javascript.builtins.SharedArrayBuffer.maxByteLength π | Safari | 3/27/2023 | Firefox | 7/9/2024 | 470 | |
| javascript.builtins.SharedArrayBuffer.slice π | Firefox | 7/28/2020 | Safari | 12/13/2021 | 503 | |
| javascript.builtins.String π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.@@iterator π | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used. |
| javascript.builtins.String.String π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.anchor π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Firefox: Starting with version 17, the quotation mark (") is replaced by its HTML reference character ( ") in strings supplied for the name parameter. |
| javascript.builtins.String.at π | Firefox | 7/13/2021 | Safari | 3/14/2022 | 244 | |
| javascript.builtins.String.big π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.blink π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.bold π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.charAt π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.charCodeAt π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.codePointAt π | Firefox | 4/29/2014 | Safari | 9/30/2015 | 519 | |
| javascript.builtins.String.concat π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.endsWith π | Firefox | 11/20/2012 | Safari | 9/30/2015 | 1044 | |
| javascript.builtins.String.fixed π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.fontcolor π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.fontsize π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.fromCharCode π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.fromCodePoint π | Firefox | 4/29/2014 | Safari | 9/30/2015 | 519 | |
| javascript.builtins.String.includes π | Firefox | 8/11/2015 | Safari | 9/30/2015 | 50 | |
| javascript.builtins.String.indexOf π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.isWellFormed π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| javascript.builtins.String.italics π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.lastIndexOf π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.link π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.localeCompare π | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.builtins.String.localeCompare.locales_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.String.localeCompare.options_parameter | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.builtins.String.match π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.matchAll π | Firefox | 5/21/2019 | Safari | 9/19/2019 | 121 | |
| javascript.builtins.String.normalize π | Firefox | 7/22/2014 | Safari | 9/20/2016 | 791 | |
| javascript.builtins.String.padEnd π | Firefox | 8/2/2016 | Safari | 9/20/2016 | 49 | |
| javascript.builtins.String.padStart π | Firefox | 8/2/2016 | Safari | 9/20/2016 | 49 | |
| javascript.builtins.String.raw π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.builtins.String.repeat π | Firefox | 9/17/2013 | Safari | 9/30/2015 | 743 | |
| javascript.builtins.String.replace π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | Internet Explorer: A replacement function as second argument is not supported. |
| javascript.builtins.String.replaceAll π | Safari | 3/24/2020 | Firefox | 6/2/2020 | 70 | |
| javascript.builtins.String.search π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.slice π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.small π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.split π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.startsWith π | Firefox | 11/20/2012 | Safari | 9/30/2015 | 1044 | |
| javascript.builtins.String.strike π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.sub π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.substr π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.substring π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.sup π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.toLocaleLowerCase π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| javascript.builtins.String.toLocaleLowerCase.locales_parameter | Safari | 9/20/2016 | Firefox | 8/8/2017 | 322 | Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.String.toLocaleUpperCase π | Firefox | 11/9/2004 | Safari | 4/15/2005 | 157 | |
| javascript.builtins.String.toLocaleUpperCase.locales_parameter | Safari | 9/20/2016 | Firefox | 8/8/2017 | 322 | Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data. |
| javascript.builtins.String.toLowerCase π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.toString π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.toUpperCase π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.String.toWellFormed π | Safari | 3/27/2023 | Firefox | 10/24/2023 | 211 | |
| javascript.builtins.String.trim π | Firefox | 6/30/2009 | Safari | 6/7/2010 | 342 | |
| javascript.builtins.String.trimEnd π | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | |
| javascript.builtins.String.trimStart π | Firefox | 6/26/2018 | Safari | 9/17/2018 | 83 | |
| javascript.builtins.String.unicode_code_point_escapes | Safari | 6/23/2003 | Firefox | 8/11/2015 | 4432 | |
| javascript.builtins.String.valueOf π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Symbol π | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | Edge: Edge 12 included Symbol properties in JSON.stringify() output. |
| javascript.builtins.Symbol.@@toPrimitive π | Firefox | 1/26/2016 | Safari | 9/20/2016 | 238 | |
| javascript.builtins.Symbol.Symbol π | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | |
| javascript.builtins.Symbol.asyncIterator π | Firefox | 11/14/2017 | Safari | 4/12/2018 | 149 | |
| javascript.builtins.Symbol.description π | Firefox | 10/23/2018 | Safari | 3/25/2019 | 153 | Safari: No support for an undefined description.Safari on iOS: No support for an undefined description.WebView on iOS: No support for an undefined description. |
| javascript.builtins.Symbol.for π | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | |
| javascript.builtins.Symbol.hasInstance π | Safari | 9/20/2016 | Firefox | 11/15/2016 | 56 | |
| javascript.builtins.Symbol.isConcatSpreadable π | Firefox | 8/2/2016 | Safari | 9/20/2016 | 49 | |
| javascript.builtins.Symbol.iterator π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | |
| javascript.builtins.Symbol.keyFor π | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | |
| javascript.builtins.Symbol.match π | Firefox | 8/11/2015 | Safari | 9/20/2016 | 406 | |
| javascript.builtins.Symbol.matchAll π | Firefox | 5/21/2019 | Safari | 9/19/2019 | 121 | |
| javascript.builtins.Symbol.replace π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.Symbol.search π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.Symbol.species π | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| javascript.builtins.Symbol.split π | Firefox | 9/20/2016 | Safari | 9/20/2016 | ||
| javascript.builtins.Symbol.toPrimitive π | Firefox | 1/26/2016 | Safari | 9/20/2016 | 238 | |
| javascript.builtins.Symbol.toString π | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | |
| javascript.builtins.Symbol.toStringTag π | Safari | 9/20/2016 | Firefox | 1/24/2017 | 126 | |
| javascript.builtins.Symbol.toStringTag.dom_objects | Firefox | 6/30/2020 | Safari | 9/16/2020 | 78 | |
| javascript.builtins.Symbol.unscopables π | Safari | 9/30/2015 | Firefox | 8/2/2016 | 307 | |
| javascript.builtins.Symbol.valueOf π | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | |
| javascript.builtins.SyntaxError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.SyntaxError.SyntaxError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.TypeError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.TypeError.TypeError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.TypedArray π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.TypedArray.@@iterator π | Firefox | 2/24/2015 | Safari | 9/20/2016 | 574 | Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used. |
| javascript.builtins.TypedArray.@@species π | Firefox | 8/2/2016 | Safari | 9/20/2016 | 49 | |
| javascript.builtins.TypedArray.BYTES_PER_ELEMENT π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.TypedArray.at π | Firefox | 7/13/2021 | Safari | 3/14/2022 | 244 | |
| javascript.builtins.TypedArray.buffer π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.TypedArray.byteLength π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.TypedArray.byteOffset π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.TypedArray.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.TypedArray.copyWithin π | Firefox | 12/1/2014 | Safari | 9/20/2016 | 659 | |
| javascript.builtins.TypedArray.entries π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.every π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.fill π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.filter π | Firefox | 5/12/2015 | Safari | 9/20/2016 | 497 | |
| javascript.builtins.TypedArray.find π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.findIndex π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.findLast π | Safari | 3/14/2022 | Firefox | 8/23/2022 | 162 | |
| javascript.builtins.TypedArray.findLastIndex π | Safari | 3/14/2022 | Firefox | 8/23/2022 | 162 | |
| javascript.builtins.TypedArray.forEach π | Firefox | 5/12/2015 | Safari | 9/20/2016 | 497 | |
| javascript.builtins.TypedArray.from π | Firefox | 5/12/2015 | Safari | 9/20/2016 | 497 | |
| javascript.builtins.TypedArray.includes π | Firefox | 12/15/2015 | Safari | 9/20/2016 | 280 | |
| javascript.builtins.TypedArray.indexOf π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | Firefox: Starting with Firefox 47, this method will no longer return -0. For example, new Uint8Array([0]).indexOf(0, -0) will now always return +0.Firefox for Android: Starting with Firefox for Android 47, this method will no longer return -0. For example, new Uint8Array([0]).indexOf(0, -0) will now always return +0. |
| javascript.builtins.TypedArray.index_properties_not_consulting_prototype | Safari | 7/20/2011 | Firefox | 10/29/2013 | 832 | Chrome: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Chrome Android: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Deno: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Edge: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Internet Explorer: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Node.js: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Quest Browser: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Opera: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Opera Android: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Safari: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Safari on iOS: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Samsung Internet: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.WebView Android: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.WebView on iOS: Negative integers are not considered as indexed properties and therefore return the value of the prototype property. |
| javascript.builtins.TypedArray.iterable_in_constructor | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.TypedArray.join π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.keys π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.lastIndexOf π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | Firefox: Starting with Firefox 47, this method will no longer return -0. For example, new Uint8Array([0]).lastIndexOf(0, -0) will now always return +0.Firefox for Android: Starting with Firefox for Android 47, this method will no longer return -0. For example, new Uint8Array([0]).lastIndexOf(0, -0) will now always return +0. |
| javascript.builtins.TypedArray.length π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.TypedArray.map π | Firefox | 5/12/2015 | Safari | 9/20/2016 | 497 | |
| javascript.builtins.TypedArray.name π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.TypedArray.named_properties | Safari | 7/20/2011 | Firefox | 6/10/2014 | 1056 | |
| javascript.builtins.TypedArray.of π | Firefox | 5/12/2015 | Safari | 9/20/2016 | 497 | |
| javascript.builtins.TypedArray.reduce π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.reduceRight π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.reverse π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.set π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.TypedArray.slice π | Firefox | 5/12/2015 | Safari | 9/20/2016 | 497 | |
| javascript.builtins.TypedArray.some π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.sort π | Firefox | 4/26/2016 | Safari | 9/20/2016 | 147 | |
| javascript.builtins.TypedArray.subarray π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.TypedArray.toLocaleString π | Safari | 7/20/2011 | Firefox | 1/24/2017 | 2015 | |
| javascript.builtins.TypedArray.toReversed π | Safari | 9/12/2022 | Firefox | 7/4/2023 | 295 | |
| javascript.builtins.TypedArray.toSorted π | Safari | 9/12/2022 | Firefox | 7/4/2023 | 295 | |
| javascript.builtins.TypedArray.toString π | Safari | 7/20/2011 | Firefox | 1/24/2017 | 2015 | |
| javascript.builtins.TypedArray.values π | Firefox | 3/31/2015 | Safari | 9/20/2016 | 539 | |
| javascript.builtins.TypedArray.with π | Safari | 9/12/2022 | Firefox | 7/4/2023 | 295 | |
| javascript.builtins.URIError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.URIError.URIError π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.Uint16Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Uint16Array.Uint16Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Uint16Array.Uint16Array.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.Uint16Array.Uint16Array.iterable_allowed | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.Uint32Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Uint32Array.Uint32Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Uint32Array.Uint32Array.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.Uint32Array.Uint32Array.iterable_allowed | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.Uint8Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Uint8Array.Uint8Array π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Uint8Array.Uint8Array.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.Uint8Array.Uint8Array.iterable_allowed | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.Uint8Array.fromBase64 π | Firefox | 11/26/2024 | Safari | 12/11/2024 | 15 | |
| javascript.builtins.Uint8Array.fromHex π | Firefox | 11/26/2024 | Safari | 12/11/2024 | 15 | |
| javascript.builtins.Uint8Array.setFromBase64 π | Firefox | 11/26/2024 | Safari | 12/11/2024 | 15 | |
| javascript.builtins.Uint8Array.setFromHex π | Firefox | 11/26/2024 | Safari | 12/11/2024 | 15 | |
| javascript.builtins.Uint8Array.toBase64 π | Firefox | 11/26/2024 | Safari | 12/11/2024 | 15 | |
| javascript.builtins.Uint8Array.toHex π | Firefox | 11/26/2024 | Safari | 12/11/2024 | 15 | |
| javascript.builtins.Uint8ClampedArray π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Uint8ClampedArray.Uint8ClampedArray π | Firefox | 3/22/2011 | Safari | 7/20/2011 | 120 | |
| javascript.builtins.Uint8ClampedArray.Uint8ClampedArray.constructor_without_parameters | Safari | 7/20/2011 | Firefox | 8/8/2017 | 2211 | |
| javascript.builtins.Uint8ClampedArray.Uint8ClampedArray.iterable_allowed | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.builtins.WeakMap π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | |
| javascript.builtins.WeakMap.WeakMap π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | |
| javascript.builtins.WeakMap.WeakMap.iterable_allowed | Firefox | 2/24/2015 | Safari | 9/30/2015 | 218 | |
| javascript.builtins.WeakMap.WeakMap.null_allowed | Safari | 10/16/2014 | Firefox | 3/31/2015 | 166 | |
| javascript.builtins.WeakMap.delete π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | Firefox: Before Firefox 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.Firefox for Android: Before Firefox for Android 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard. |
| javascript.builtins.WeakMap.get π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | Firefox: Before Firefox 38, this method threw a TypeError when the key parameter was not an object. However, the ES2015 specification specifies to return undefined instead. Furthermore, WeakMap.prototype.get accepted an optional second argument as a fallback value, which is not part of the standard. Both non-standard behaviors are removed in version 38 and higher.Firefox for Android: Before Firefox for Android 38, this method threw a TypeError when the key parameter was not an object. However, the ES2015 specification specifies to return undefined instead. Furthermore, WeakMap.prototype.get accepted an optional second argument as a fallback value, which is not part of the standard. Both non-standard behaviors are removed in version 38 and higher. |
| javascript.builtins.WeakMap.has π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | Firefox: Before Firefox 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.Firefox for Android: Before Firefox for Android 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard. |
| javascript.builtins.WeakMap.set π | Firefox | 8/16/2011 | Safari | 10/16/2014 | 1157 | Firefox: Before Firefox 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.Firefox for Android: Before Firefox for Android 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.Internet Explorer: Returns 'undefined' instead of the 'Map' object. |
| javascript.builtins.WeakRef π | Firefox | 7/28/2020 | Safari | 4/26/2021 | 272 | |
| javascript.builtins.WeakRef.WeakRef π | Firefox | 7/28/2020 | Safari | 4/26/2021 | 272 | |
| javascript.builtins.WeakRef.deref π | Firefox | 7/28/2020 | Safari | 4/26/2021 | 272 | |
| javascript.builtins.WeakSet π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.builtins.WeakSet.WeakSet π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.builtins.WeakSet.WeakSet.iterable_allowed | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.builtins.WeakSet.WeakSet.null_allowed | Firefox | 3/31/2015 | Safari | 9/30/2015 | 183 | |
| javascript.builtins.WeakSet.add π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.builtins.WeakSet.delete π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.builtins.WeakSet.has π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.builtins.decodeURI π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| javascript.builtins.decodeURIComponent π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| javascript.builtins.encodeURI π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| javascript.builtins.encodeURIComponent π | Safari | 10/24/2003 | Firefox | 11/9/2004 | 382 | |
| javascript.builtins.escape π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.eval π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.globalThis π | Firefox | 1/29/2019 | Safari | 3/25/2019 | 55 | |
| javascript.builtins.isFinite π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.isNaN π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.parseFloat π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.parseInt π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.parseInt.leading_zero_strings_as_decimal | Safari | 7/25/2012 | Firefox | 5/14/2013 | 293 | |
| javascript.builtins.undefined π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.builtins.unescape π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.classes π | Safari | 9/30/2015 | Firefox | 3/8/2016 | 160 | Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required. |
| javascript.classes.constructor π | Safari | 9/30/2015 | Firefox | 3/8/2016 | 160 | Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required. |
| javascript.classes.extends π | Safari | 9/30/2015 | Firefox | 3/8/2016 | 160 | Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required. |
| javascript.classes.private_class_fields π | Safari | 4/26/2021 | Firefox | 7/13/2021 | 78 | |
| javascript.classes.private_class_fields_in π | Firefox | 7/13/2021 | Safari | 9/20/2021 | 69 | |
| javascript.classes.private_class_methods π | Firefox | 7/13/2021 | Safari | 9/20/2021 | 69 | |
| javascript.classes.public_class_fields π | Firefox | 9/3/2019 | Safari | 9/12/2022 | 1105 | Safari: Parentheses in field initializers can lead to ReferenceErrors. See bug 236843.Safari: Doesn't support public static fields. See bug 194095.Safari on iOS: Parentheses in field initializers can lead to ReferenceErrors. See bug 236843.Safari on iOS: Doesn't support public static fields. See bug 194095.WebView on iOS: Parentheses in field initializers can lead to ReferenceErrors. See bug 236843.WebView on iOS: Doesn't support public static fields. See bug 194095. |
| javascript.classes.static π | Safari | 9/30/2015 | Firefox | 3/8/2016 | 160 | Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required. |
| javascript.classes.static_class_fields π | Firefox | 4/7/2020 | Safari | 4/26/2021 | 384 | |
| javascript.classes.static_initialization_blocks π | Firefox | 10/5/2021 | Safari | 3/27/2023 | 538 | |
| javascript.functions π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.functions.arguments π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.functions.arguments.@@iterator π | Safari | 9/30/2015 | Firefox | 4/26/2016 | 209 | |
| javascript.functions.arguments.callee π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.functions.arguments.length π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.functions.arrow_functions π | Firefox | 6/25/2013 | Safari | 9/20/2016 | 1183 | Firefox: The initial implementation of arrow functions in Firefox made them automatically strict. This has been changed as of Firefox 24. The use of 'use strict'; is now required.Firefox: Before Firefox 39, a line terminator (\n) was incorrectly allowed after arrow function arguments. This has been fixed to conform to the ES2015 specification and code like () \n => {} will now throw a SyntaxError in this and later versions.Firefox for Android: The initial implementation of arrow functions in Firefox for Android made them automatically strict. This has been changed as of Firefox for Android 24. The use of 'use strict'; is now required.Firefox for Android: Before Firefox for Android 39, a line terminator (\n) was incorrectly allowed after arrow function arguments. This has been fixed to conform to the ES2015 specification and code like () \n => {} will now throw a SyntaxError in this and later versions. |
| javascript.functions.arrow_functions.trailing_comma | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.functions.block_level_functions | Firefox | 4/26/2016 | Safari | 9/20/2016 | 147 | |
| javascript.functions.default_parameters π | Firefox | 8/28/2012 | Safari | 9/20/2016 | 1484 | |
| javascript.functions.default_parameters.destructured_parameter_with_default_value_assignment | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| javascript.functions.default_parameters.parameters_without_defaults_after_default_parameters | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| javascript.functions.get π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| javascript.functions.get.computed_property_names | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| javascript.functions.method_definitions π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.functions.method_definitions.async_generator_methods | Firefox | 8/8/2017 | Safari | 9/17/2018 | 405 | |
| javascript.functions.method_definitions.async_methods | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| javascript.functions.method_definitions.generator_methods_not_constructable | Firefox | 12/15/2015 | Safari | 3/21/2016 | 97 | |
| javascript.functions.rest_parameters π | Firefox | 8/28/2012 | Safari | 9/20/2016 | 1484 | |
| javascript.functions.rest_parameters.destructuring | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.functions.set π | Firefox | 11/29/2005 | Safari | 10/26/2007 | 696 | |
| javascript.functions.set.computed_property_names | Firefox | 12/1/2014 | Safari | 3/21/2016 | 476 | |
| javascript.grammar.array_literals π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.binary_numeric_literals π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| javascript.grammar.boolean_literals π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.decimal_numeric_literals π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.hashbang_comments π | Firefox | 5/21/2019 | Safari | 3/24/2020 | 308 | |
| javascript.grammar.hexadecimal_escape_sequences π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.hexadecimal_numeric_literals π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.null_literal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.numeric_separators π | Safari | 9/19/2019 | Firefox | 10/22/2019 | 33 | |
| javascript.grammar.octal_numeric_literals π | Firefox | 10/29/2013 | Safari | 9/30/2015 | 701 | |
| javascript.grammar.regular_expression_literals π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.shorthand_object_literals | Firefox | 10/14/2014 | Safari | 9/30/2015 | 351 | |
| javascript.grammar.string_literals π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.template_literals π | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.grammar.template_literals.template_literal_revision | Firefox | 4/19/2017 | Safari | 9/19/2017 | 153 | |
| javascript.grammar.trailing_commas π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.trailing_commas.trailing_commas_in_functions | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.grammar.trailing_commas.trailing_commas_in_object_literals | Firefox | 11/9/2004 | Safari | 10/26/2007 | 1081 | |
| javascript.grammar.unicode_escape_sequences π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.grammar.unicode_point_escapes π | Firefox | 8/11/2015 | Safari | 9/30/2015 | 50 | |
| javascript.operators.addition π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.addition_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.async_function π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| javascript.operators.async_generator_function π | Firefox | 8/8/2017 | Safari | 9/17/2018 | 405 | |
| javascript.operators.await π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| javascript.operators.await.top_level π | Firefox | 6/1/2021 | Safari | 9/20/2021 | 111 | Node.js: Not supported in CommonJS modules. |
| javascript.operators.bitwise_and π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.bitwise_and_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.bitwise_not π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.bitwise_or π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.bitwise_or_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.bitwise_xor π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.bitwise_xor_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.class π | Safari | 10/22/2013 | Firefox | 3/8/2016 | 868 | |
| javascript.operators.comma π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.conditional π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.decrement π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| javascript.operators.delete π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.destructuring π | Safari | 10/16/2014 | Firefox | 9/22/2015 | 341 | Firefox: Firefox provided a non-standard destructuring implementation from Firefox 2 to 40.Firefox for Android: Firefox for Android provided a non-standard destructuring implementation from Firefox for Android 4 to 40. |
| javascript.operators.destructuring.computed_property_names | Firefox | 9/22/2015 | Safari | 9/20/2016 | 364 | |
| javascript.operators.destructuring.rest_in_arrays | Firefox | 9/22/2015 | Safari | 3/21/2016 | 181 | |
| javascript.operators.destructuring.rest_in_objects | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| javascript.operators.division π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.division_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.equality π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.exponentiation π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| javascript.operators.exponentiation_assignment π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| javascript.operators.function π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.function.trailing_comma | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.operators.generator_function π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| javascript.operators.generator_function.trailing_comma | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.operators.greater_than π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.greater_than_or_equal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.grouping π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.import π | Safari | 4/12/2018 | Firefox | 5/21/2019 | 404 | Deno: Bundled Deno applications (using deno compile) do not support dynamic importsNode.js: Dynamic import can be used in either CommonJS or ES module files, to import either CommonJS or ES module files. See Node's ECMAScript Modules documentation for more details.Node.js: Dynamic import can be used in either CommonJS or ES module files, to import either CommonJS or ES module files. See Node's ECMAScript Modules documentation for more details. |
| javascript.operators.import.worker_support | Safari | 9/20/2021 | Firefox | 6/6/2023 | 624 | |
| javascript.operators.import_meta π | Safari | 4/12/2018 | Firefox | 9/5/2018 | 146 | |
| javascript.operators.import_meta.resolve π | Firefox | 10/18/2022 | Safari | 3/27/2023 | 160 | Node.js: Returns a URL object instead of a string. |
| javascript.operators.in π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.increment π | Firefox | 11/9/2004 | Safari | 6/8/2009 | 1672 | |
| javascript.operators.inequality π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.instanceof π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.left_shift π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.left_shift_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.less_than π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.less_than_or_equal π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.logical_and π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.logical_and_assignment π | Firefox | 7/28/2020 | Safari | 9/16/2020 | 50 | |
| javascript.operators.logical_not π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.logical_or π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.logical_or_assignment π | Firefox | 7/28/2020 | Safari | 9/16/2020 | 50 | |
| javascript.operators.multiplication π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.multiplication_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.new π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.new_target π | Firefox | 9/22/2015 | Safari | 9/19/2017 | 728 | |
| javascript.operators.null π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.nullish_coalescing π | Firefox | 1/7/2020 | Safari | 3/24/2020 | 77 | |
| javascript.operators.nullish_coalescing_assignment π | Firefox | 7/28/2020 | Safari | 9/16/2020 | 50 | |
| javascript.operators.object_initializer π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.object_initializer.computed_property_names | Safari | 10/16/2014 | Firefox | 12/1/2014 | 46 | |
| javascript.operators.object_initializer.shorthand_method_names | Firefox | 12/1/2014 | Safari | 9/30/2015 | 303 | |
| javascript.operators.object_initializer.shorthand_property_names | Firefox | 10/14/2014 | Safari | 9/30/2015 | 351 | |
| javascript.operators.object_initializer.spread_properties | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| javascript.operators.optional_chaining π | Firefox | 3/10/2020 | Safari | 3/24/2020 | 14 | |
| javascript.operators.property_accessors π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.remainder π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.remainder_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.right_shift π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.right_shift_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.spread π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| javascript.operators.spread.spread_in_arrays π | Firefox | 10/9/2012 | Safari | 10/16/2014 | 737 | |
| javascript.operators.spread.spread_in_function_calls π | Firefox | 2/4/2014 | Safari | 10/16/2014 | 254 | |
| javascript.operators.spread.spread_in_object_literals π | Firefox | 8/8/2017 | Safari | 4/12/2018 | 247 | |
| javascript.operators.strict_equality π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.strict_inequality π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.subtraction π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.subtraction_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.super π | Safari | 10/22/2013 | Firefox | 3/8/2016 | 868 | |
| javascript.operators.this π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.typeof π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.unary_negation π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.unary_plus π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.unsigned_right_shift π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.unsigned_right_shift_assignment π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.operators.void π | Firefox | 11/9/2004 | Safari | 3/18/2008 | 1225 | |
| javascript.operators.yield π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | Firefox: Starting with Firefox 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.Firefox: Starting with Firefox 29, an IteratorResult object returned for completed generator function.Firefox for Android: Starting with Firefox for Android 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.Firefox for Android: Starting with Firefox for Android 29, an IteratorResult object returned for completed generator function. |
| javascript.operators.yield_star π | Firefox | 2/4/2014 | Safari | 9/20/2016 | 959 | Firefox: Starting with Firefox 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.Firefox for Android: Starting with Firefox for Android 33, the parsing of the yield expression has been updated to conform with the ES2015 specification. |
| javascript.regular_expressions.backreference π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.capturing_group π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.character_class π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.character_class_escape π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.character_escape π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.character_escape.unicode | Firefox | 4/26/2016 | Safari | 9/20/2016 | 147 | |
| javascript.regular_expressions.disjunction π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.input_boundary_assertion π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.literal_character π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.lookahead_assertion π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.lookbehind_assertion π | Firefox | 6/30/2020 | Safari | 3/27/2023 | 1000 | |
| javascript.regular_expressions.named_backreference π | Safari | 4/12/2018 | Firefox | 6/30/2020 | 810 | |
| javascript.regular_expressions.named_capturing_group π | Safari | 4/12/2018 | Firefox | 6/30/2020 | 810 | |
| javascript.regular_expressions.named_capturing_group.duplicate_named_capturing_groups | Safari | 9/18/2023 | Firefox | 8/6/2024 | 323 | |
| javascript.regular_expressions.non_capturing_group π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.quantifier π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.unicode_character_class_escape π | Safari | 4/12/2018 | Firefox | 6/30/2020 | 810 | |
| javascript.regular_expressions.wildcard π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.regular_expressions.word_boundary_assertion π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.async_function π | Firefox | 3/7/2017 | Safari | 3/27/2017 | 20 | |
| javascript.statements.async_generator_function π | Firefox | 8/8/2017 | Safari | 9/17/2018 | 405 | |
| javascript.statements.block π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.break π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.class π | Firefox | 3/8/2016 | Safari | 3/27/2017 | 384 | Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required. |
| javascript.statements.const π | Safari | 7/20/2011 | Firefox | 2/24/2015 | 1315 | Firefox: Before Firefox 13, const is implemented, but re-assignment is not failing.Firefox: Before Firefox 46, a TypeError was thrown on redeclaration instead of a SyntaxError.Firefox for Android: Before Firefox for Android 14, const is implemented, but re-assignment is not failing.Firefox for Android: Before Firefox for Android 46, a TypeError was thrown on redeclaration instead of a SyntaxError. |
| javascript.statements.continue π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.debugger π | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | |
| javascript.statements.do_while π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.empty π | Firefox | 11/9/2004 | Safari | 6/7/2010 | 2036 | |
| javascript.statements.export π | Safari | 3/27/2017 | Firefox | 5/9/2018 | 408 | Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details. |
| javascript.statements.export.default π | Safari | 3/27/2017 | Firefox | 5/9/2018 | 408 | Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details. |
| javascript.statements.export.namespace π | Firefox | 8/25/2020 | Safari | 4/26/2021 | 244 | Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details. |
| javascript.statements.for π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.for_await_of π | Firefox | 11/14/2017 | Safari | 9/17/2018 | 307 | |
| javascript.statements.for_in π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.for_of π | Firefox | 6/5/2012 | Safari | 10/22/2013 | 504 | Firefox: Before Firefox 51, using the for...of loop construct with the const keyword threw a SyntaxError ("missing = in const declaration").Firefox for Android: Before Firefox for Android 51, using the for...of loop construct with the const keyword threw a SyntaxError ("missing = in const declaration"). |
| javascript.statements.for_of.async_iterators | Safari | 10/22/2013 | Firefox | 11/14/2017 | 1484 | |
| javascript.statements.for_of.closing_iterators | Safari | 10/22/2013 | Firefox | 4/19/2017 | 1275 | |
| javascript.statements.function π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.function.trailing_comma_in_parameters | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.statements.generator_function π | Firefox | 12/10/2013 | Safari | 9/20/2016 | 1015 | |
| javascript.statements.generator_function.IteratorResult_object | Firefox | 4/29/2014 | Safari | 9/20/2016 | 875 | |
| javascript.statements.generator_function.not_constructable_with_new | Firefox | 12/15/2015 | Safari | 9/20/2016 | 280 | |
| javascript.statements.generator_function.trailing_comma_in_parameters | Safari | 9/20/2016 | Firefox | 3/7/2017 | 168 | |
| javascript.statements.if_else π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.import π | Safari | 3/27/2017 | Firefox | 5/9/2018 | 408 | Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details.Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details. |
| javascript.statements.import.worker_support | Safari | 9/20/2021 | Firefox | 6/6/2023 | 624 | |
| javascript.statements.label π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.let π | Firefox | 1/26/2016 | Safari | 9/20/2016 | 238 | Chrome: Strict mode is required.Chrome Android: Strict mode is required.Edge: In Edge 12 and 13, let within a for loop initializer does not create a separate variable for each loop iteration as defined by ES2015. Instead, it behaves as though the loop were wrapped in a scoping block with the let immediately before the loop.Firefox: Before Firefox 44, let is only available to code blocks in HTML wrapped in a <script type="application/javascript;version=1.7"> block (or higher version) and has different semantics (e.g. no temporal dead zone).Firefox: Before Firefox 46, a TypeError is thrown on redeclaration instead of a SyntaxError.Firefox: Firefox 54 adds support of let in workers.Firefox for Android: Before Firefox for Android 44, let is only available to code blocks in HTML wrapped in a <script type="application/javascript;version=1.7"> block (or higher version) and has different semantics (e.g. no temporal dead zone).Firefox for Android: Before Firefox for Android 46, a TypeError is thrown on redeclaration instead of a SyntaxError.Firefox for Android: Firefox for Android 54 adds support of let in workers.Internet Explorer: In Internet Explorer, let within a for loop initializer does not create a separate variable for each loop iteration as defined by ES2015. Instead, it behaves as though the loop were wrapped in a scoping block with the let immediately before the loop.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required. |
| javascript.statements.return π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.switch π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.throw π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.try_catch π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.try_catch.optional_catch_binding | Firefox | 1/23/2018 | Safari | 4/12/2018 | 79 | |
| javascript.statements.var π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.while π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 | |
| javascript.statements.with π | Safari | 6/23/2003 | Firefox | 11/9/2004 | 505 |
| API | First Browser | Date | Last Browser | Date | Days | Notes |
|---|---|---|---|---|---|---|
| webassembly.BigInt-to-i64-integration π | Firefox | 6/30/2020 | Safari | 4/26/2021 | 300 | |
| webassembly.api π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.CompileError π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.CompileError.CompileError π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Exception π | Safari | 12/13/2021 | Firefox | 5/3/2022 | 141 | |
| webassembly.api.Exception.Exception π | Safari | 12/13/2021 | Firefox | 5/3/2022 | 141 | |
| webassembly.api.Exception.Exception.options_parameter_traceStack | Safari | 12/13/2021 | Firefox | 5/3/2022 | 141 | |
| webassembly.api.Exception.getArg π | Safari | 12/13/2021 | Firefox | 5/3/2022 | 141 | |
| webassembly.api.Exception.is π | Safari | 12/13/2021 | Firefox | 5/3/2022 | 141 | |
| webassembly.api.Global π | Firefox | 9/5/2018 | Safari | 3/24/2020 | 566 | |
| webassembly.api.Global.Global π | Firefox | 9/5/2018 | Safari | 3/24/2020 | 566 | Chrome: Constructing a Global with a value of v128 produces a TypeError.Chrome Android: Constructing a Global with a value of v128 produces a TypeError.Deno: Constructing a Global with a value of v128 produces a TypeError.Edge: Constructing a Global with a value of v128 produces a TypeError.Node.js: Constructing a Global with a value of v128 produces a TypeError.Quest Browser: Constructing a Global with a value of v128 produces a TypeError.Opera: Constructing a Global with a value of v128 produces a TypeError.Opera Android: Constructing a Global with a value of v128 produces a TypeError.Samsung Internet: Constructing a Global with a value of v128 produces a TypeError.WebView Android: Constructing a Global with a value of v128 produces a TypeError. |
| webassembly.api.Global.value π | Firefox | 9/5/2018 | Safari | 3/24/2020 | 566 | |
| webassembly.api.Global.valueOf π | Firefox | 9/5/2018 | Safari | 3/24/2020 | 566 | |
| webassembly.api.Instance π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Instance.Instance π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Instance.exports π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.LinkError π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.LinkError.LinkError π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Memory π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Memory.Memory π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Memory.Memory.shared π | Firefox | 6/30/2020 | Safari | 12/13/2021 | 531 | Safari: Shared WebAssembly.Memory is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.Safari on iOS: Shared WebAssembly.Memory is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.WebView on iOS: Shared WebAssembly.Memory is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP. |
| webassembly.api.Memory.buffer π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Memory.grow π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Module π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Module.Module π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Module.customSections_static π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Module.exports_static π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Module.imports_static π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.RuntimeError π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.RuntimeError.RuntimeError π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Table π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Table.Table π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Table.get π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Table.grow π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Table.length π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Table.set π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.Tag π | Safari | 12/13/2021 | Firefox | 5/3/2022 | 141 | |
| webassembly.api.Tag.Tag π | Safari | 12/13/2021 | Firefox | 5/3/2022 | 141 | |
| webassembly.api.compileStreaming_static π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| webassembly.api.compile_static π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.instantiateStreaming_static π | Firefox | 1/23/2018 | Safari | 9/20/2021 | 1336 | |
| webassembly.api.instantiate_static π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.api.validate_static π | Firefox | 3/7/2017 | Safari | 9/19/2017 | 196 | |
| webassembly.bulk-memory-operations π | Firefox | 6/30/2020 | Safari | 10/25/2021 | 482 | |
| webassembly.exception-handling π | Safari | 12/13/2021 | Firefox | 5/3/2022 | 141 | |
| webassembly.extended-constant-expressions π | Firefox | 4/11/2023 | Safari | 3/5/2024 | 329 | |
| webassembly.fixed-width-SIMD π | Firefox | 6/1/2021 | Safari | 3/27/2023 | 664 | |
| webassembly.garbage-collection π | Firefox | 11/21/2023 | Safari | 12/11/2024 | 386 | |
| webassembly.multi-value π | Safari | 3/24/2020 | Firefox | 6/30/2020 | 98 | |
| webassembly.mutable-globals π | Firefox | 9/5/2018 | Safari | 3/24/2020 | 566 | |
| webassembly.non-trapping-float-to-int-conversions π | Firefox | 12/11/2018 | Safari | 10/25/2021 | 1049 | |
| webassembly.reference-types π | Firefox | 7/28/2020 | Safari | 10/25/2021 | 454 | |
| webassembly.sign-extension-operations π | Firefox | 9/5/2018 | Safari | 4/26/2021 | 964 | |
| webassembly.tail-calls π | Firefox | 12/19/2023 | Safari | 12/11/2024 | 358 | |
| webassembly.threads-and-atomics π | Firefox | 7/28/2020 | Safari | 12/13/2021 | 503 | |
| webassembly.typedFunctionReferences π | Firefox | 11/21/2023 | Safari | 9/16/2024 | 300 |