Experimental

For a given set of browsers what APIs are still considred experimental, and how long have they been experimental?

Example Comparisons
Browsers
Features

Summary

Experimental APIs

Below is a list of features that are marked as "Experimental" in Firefox and Safari

Raw Data

Quick Links:

DOM API Data

API First Browser Date Last Browser Date Days in experimentation Notes
api.AudioSession 📋Safari3/27/2023 1224
api.AudioSession.type 📋Safari3/27/2023 1224
api.BarcodeDetector 📋Safari9/18/2023 1049
Chrome: Supported on ChromeOS and macOS only.Chrome: Before Chrome 113, on macOS Ventura (13) and above, this interface silently failed. See bug 40245611.Chrome: Supported on macOS only.Edge: Supported on macOS only.Edge: Before Chrome 113, on macOS Ventura (13) and above, this interface silently failed. See bug 40245611.Opera: Supported on macOS only.Opera: Before Chrome 113, on macOS Ventura (13) and above, this interface silently failed. See bug 40245611.
api.BarcodeDetector.BarcodeDetector 📋Safari9/18/2023 1049
Chrome: Supported on ChromeOS and macOS only.Chrome: Supported on macOS only.Edge: Supported on macOS only.Opera: Supported on macOS only.
api.BarcodeDetector.detect 📋Safari9/18/2023 1049
Chrome: Supported on ChromeOS and macOS only.Chrome: Supported on macOS only.Edge: Supported on macOS only.Opera: Supported on macOS only.
api.BarcodeDetector.getSupportedFormats_static 📋Safari9/18/2023 1049
Chrome: Supported on ChromeOS and macOS only.Chrome: Supported on macOS only.Edge: Supported on macOS only.Opera: Supported on macOS only.
api.BufferedChangeEvent 📋Safari9/18/2023 1049
api.BufferedChangeEvent.BufferedChangeEvent 📋Safari9/18/2023 1049
api.BufferedChangeEvent.addedRanges 📋Safari9/18/2023 1049
api.BufferedChangeEvent.removedRanges 📋Safari9/18/2023 1049
api.CSSPageDescriptors 📋Firefox8/6/2024 726
api.CSSPageDescriptors.margin 📋Firefox8/6/2024 726
api.CSSPageDescriptors.margin-bottom 📋Firefox8/6/2024 726
api.CSSPageDescriptors.margin-left 📋Firefox8/6/2024 726
api.CSSPageDescriptors.margin-right 📋Firefox8/6/2024 726
api.CSSPageDescriptors.margin-top 📋Firefox8/6/2024 726
api.CSSPageDescriptors.marginBottom 📋Firefox8/6/2024 726
api.CSSPageDescriptors.marginLeft 📋Firefox8/6/2024 726
api.CSSPageDescriptors.marginRight 📋Firefox8/6/2024 726
api.CSSPageDescriptors.marginTop 📋Firefox8/6/2024 726
api.CSSPageDescriptors.page-orientation 📋Firefox8/6/2024 726
api.CSSPageDescriptors.pageOrientation 📋Firefox8/6/2024 726
api.CSSPageDescriptors.size 📋Firefox8/6/2024 726
api.CSSPageRule.style.type_CSSPageDescriptors Firefox8/6/2024 726
api.CSSPositionTryDescriptors 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.align-self 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.alignSelf 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.block-size 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.blockSize 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.bottom 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.height 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.inline-size 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.inlineSize 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.inset 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.inset-block 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.inset-block-end 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.inset-block-start 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.inset-inline 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.inset-inline-end 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.inset-inline-start 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.insetBlock 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.insetBlockEnd 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.insetBlockStart 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.insetInline 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.insetInlineEnd 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.insetInlineStart 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.justify-self 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.justifySelf 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.left 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-block 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-block-end 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-block-start 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-bottom 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-inline 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-inline-end 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-inline-start 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-left 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-right 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.margin-top 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginBlock 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginBlockEnd 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginBlockStart 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginBottom 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginInline 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginInlineEnd 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginInlineStart 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginLeft 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginRight 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.marginTop 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.max-block-size 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.max-height 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.max-inline-size 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.max-width 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.maxBlockSize 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.maxHeight 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.maxInlineSize 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.maxWidth 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.min-block-size 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.min-height 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.min-inline-size 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.min-width 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.minBlockSize 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.minHeight 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.minInlineSize 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.minWidth 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.place-self 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.placeSelf 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.position-anchor 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.position-area 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.positionAnchor 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.positionArea 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.right 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.top 📋Firefox10/1/2024 670
api.CSSPositionTryDescriptors.width 📋Firefox10/1/2024 670
api.CSSPositionTryRule 📋Firefox10/1/2024 670
api.CSSPositionTryRule.name 📋Firefox10/1/2024 670
api.CSSPositionTryRule.style 📋Firefox10/1/2024 670
api.CSSPseudoElement 📋Firefox4/7/2020 2308
api.CSSPseudoElement.element 📋Firefox4/7/2020 2308
api.CSSPseudoElement.type 📋Firefox4/7/2020 2308
api.CloseWatcher 📋Firefox10/29/2024 642
api.CloseWatcher.CloseWatcher 📋Firefox10/29/2024 642
api.CloseWatcher.cancel_event 📋Firefox10/29/2024 642
api.CloseWatcher.close 📋Firefox10/29/2024 642
api.CloseWatcher.close_event 📋Firefox10/29/2024 642
api.CloseWatcher.destroy 📋Firefox10/29/2024 642
api.CloseWatcher.requestClose 📋Firefox10/29/2024 642
api.Credential.isConditionalMediationAvailable_static 📋Safari9/12/2022 1420
api.DataCue 📋Safari9/19/2017 3239
api.DataCue.DataCue 📋Safari9/19/2017 3239
api.DataCue.type 📋Safari9/19/2017 3239
api.DataCue.value 📋Safari9/19/2017 3239
api.DataTransfer.addElement Firefox6/30/2009 6242
api.DataTransfer.mozCursor Firefox6/30/2009 6242
api.DataTransfer.mozSourceNode Firefox3/22/2011 5612
api.DataTransfer.mozUserCancelled Firefox6/30/2009 6242
api.DeprecationReportBody 📋Firefox1/29/2019 2742
Firefox: Not supported in workers
api.DeprecationReportBody.anticipatedRemoval 📋Firefox1/29/2019 2742
api.DeprecationReportBody.columnNumber 📋Firefox1/29/2019 2742
api.DeprecationReportBody.id 📋Firefox1/29/2019 2742
api.DeprecationReportBody.lineNumber 📋Firefox1/29/2019 2742
api.DeprecationReportBody.message 📋Firefox1/29/2019 2742
api.DeprecationReportBody.sourceFile 📋Firefox1/29/2019 2742
api.Directory Firefox6/10/2014 4436
api.Directory.getFiles Firefox8/2/2016 3652
api.Directory.getFilesAndDirectories Firefox11/3/2015 3925
api.Directory.name Firefox6/10/2014 4436
api.Directory.path Firefox11/3/2015 3925
api.Document.featurePolicy Firefox9/3/2019 2525
api.Document.getBoxQuads 📋Firefox7/22/2014 4394
api.Element.animate.options_iterationComposite_parameter 📋Firefox8/25/2020 2168
api.Element.ariaActiveDescendantElement 📋Safari3/27/2023 1224
api.Element.ariaControlsElements 📋Safari3/27/2023 1224
api.Element.ariaDescribedByElements 📋Safari3/27/2023 1224
api.Element.ariaDetailsElements 📋Safari3/27/2023 1224
api.Element.ariaErrorMessageElements 📋Safari3/27/2023 1224
api.Element.ariaFlowToElements 📋Safari3/27/2023 1224
api.Element.ariaLabelledByElements 📋Safari3/27/2023 1224
api.Element.ariaOwnsElements 📋Safari3/27/2023 1224
api.Element.getBoxQuads 📋Firefox7/22/2014 4394
api.ElementInternals.ariaActiveDescendantElement 📋Safari3/27/2023 1224
api.ElementInternals.ariaControlsElements 📋Safari3/27/2023 1224
api.ElementInternals.ariaDescribedByElements 📋Safari3/27/2023 1224
api.ElementInternals.ariaDetailsElements 📋Safari3/27/2023 1224
api.ElementInternals.ariaErrorMessageElements 📋Safari3/27/2023 1224
api.ElementInternals.ariaFlowToElements 📋Safari3/27/2023 1224
api.ElementInternals.ariaLabelledByElements 📋Safari3/27/2023 1224
api.ElementInternals.ariaOwnsElements 📋Safari3/27/2023 1224
api.FeaturePolicy Firefox1/29/2019 2742
api.FeaturePolicy.allowedFeatures Firefox1/29/2019 2742
api.FeaturePolicy.allowsFeature Firefox1/29/2019 2742
api.FeaturePolicy.features Firefox10/22/2019 2476
api.FeaturePolicy.getAllowlistForFeature Firefox1/29/2019 2742
api.FetchEvent.respondWith.resource_url Firefox3/13/2018 3064
api.FontFace.variationSettings 📋Firefox9/5/2018 2888
api.Gamepad.hand 📋Firefox8/8/2017 3281
api.Gamepad.hapticActuators 📋Firefox8/8/2017 3281
api.Gamepad.pose 📋Firefox8/8/2017 3281
api.Gamepad.secure_context_required Firefox8/10/2021 1818
api.GamepadButton.secure_context_required Firefox8/10/2021 1818
api.GamepadEvent.secure_context_required Firefox8/10/2021 1818
api.GamepadPose 📋Firefox8/8/2017 3281
api.GamepadPose.angularAcceleration 📋Firefox8/8/2017 3281
api.GamepadPose.angularVelocity 📋Firefox8/8/2017 3281
api.GamepadPose.hasOrientation 📋Firefox8/8/2017 3281
api.GamepadPose.hasPosition 📋Firefox8/8/2017 3281
api.GamepadPose.linearAcceleration 📋Firefox8/8/2017 3281
api.GamepadPose.linearVelocity 📋Firefox8/8/2017 3281
api.GamepadPose.orientation 📋Firefox8/8/2017 3281
api.GamepadPose.position 📋Firefox8/8/2017 3281
api.GamepadPose.secure_context_required Firefox8/10/2021 1818
api.HTMLAnchorElement.attributionSourceId 📋Safari3/14/2022 1602
api.HTMLElement.autocorrect 📋Safari4/26/2021 1924
api.HTMLElement.focus.options_focusVisible_parameter Firefox8/23/2022 1440
api.HTMLIFrameElement.featurePolicy Firefox9/3/2019 2525
api.HTMLInputElement.selectionchange_event 📋Firefox9/7/2021 1790
Chrome: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Chrome Android: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Edge: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Quest Browser: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Opera: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Opera Android: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Samsung Internet: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.WebView Android: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.
api.HTMLOutputElement.HTMLOutputElement 📋Safari9/20/2021 1777
api.HTMLTextAreaElement.selectionchange_event 📋Firefox9/7/2021 1790
Chrome: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Chrome Android: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Edge: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Quest Browser: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Opera: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Opera Android: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Samsung Internet: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.WebView Android: A selectionchange event is fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.
api.IDBDatabase.transaction.mode_parameter_readwriteflush Firefox8/11/2015 4009
api.ImageCapture 📋Firefox1/13/2015 Safari3/5/20243339
api.ImageCapture.ImageCapture 📋Firefox1/13/2015 Safari3/5/20243339
api.ImageCapture.getPhotoCapabilities 📋Safari3/5/2024 880
api.ImageCapture.getPhotoSettings 📋Safari3/5/2024 880
api.ImageCapture.takePhoto 📋Firefox1/13/2015 Safari3/5/20243339
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 📋Firefox1/13/2015 Safari3/5/20243339
api.InputEvent.inputType.insertFromPasteAsQuotation Firefox5/21/2019 2630
api.IntersectionObserverEntry.IntersectionObserverEntry Safari3/25/2019 2687
api.ManagedMediaSource 📋Safari9/18/2023 1049
api.ManagedMediaSource.ManagedMediaSource 📋Safari9/18/2023 1049
api.ManagedMediaSource.endstreaming_event 📋Safari9/18/2023 1049
api.ManagedMediaSource.startstreaming_event 📋Safari9/18/2023 1049
api.ManagedMediaSource.streaming 📋Safari9/18/2023 1049
api.ManagedSourceBuffer 📋Safari9/18/2023 1049
api.ManagedSourceBuffer.bufferedchange_event 📋Safari9/18/2023 1049
api.MediaDevices.selectAudioOutput 📋Firefox8/1/2023 1097
api.Navigator.audioSession 📋Safari3/27/2023 1224
api.Navigator.getAutoplayPolicy 📋Firefox4/11/2023 1209
api.Navigator.getGamepads.secure_context_required Firefox8/10/2021 1818
api.Navigator.globalPrivacyControl 📋Firefox11/21/2023 985
Firefox: Opt-in to GPC using the Website Privacy Preference setting (about:preferences#privacy) checkbox 'Tell websites not to sell or share my data', or by setting the preference privacy.globalprivacycontrol.enabled to true.
api.Navigator.registerProtocolHandler.scheme_parameter_ftp Firefox3/8/2022 1608
api.Navigator.registerProtocolHandler.scheme_parameter_ftps Firefox3/8/2022 1608
api.Navigator.registerProtocolHandler.scheme_parameter_sftp Firefox3/8/2022 1608
api.PerformanceResourceTiming.contentType 📋Firefox8/6/2024 726
api.PushSubscriptionChangeEvent.PushSubscriptionChangeEvent 📋Safari10/24/2022 1378
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.RTCDataChannel.priority 📋Safari9/20/2021 1777
api.RTCIdentityAssertion 📋Firefox8/11/2015 4009
Firefox: The RTCIdentityAssertion interface itself is not present, but an object with the same properties is usedFirefox for Android: The RTCIdentityAssertion interface itself is not present, but an object with the same properties is used
api.RTCIdentityAssertion.idp 📋Firefox8/11/2015 4009
api.RTCIdentityAssertion.name 📋Firefox8/11/2015 4009
api.RTCStatsReport.type_outbound-rtp.totalEncodedBytesTarget 📋Firefox6/28/2022 1496
api.RTCStatsReport.type_remote-inbound-rtp.packetsReceived 📋Firefox1/7/2020 2399
api.ReadableStream.from_static 📋Firefox8/29/2023 1069
api.ReadableStreamBYOBReader.read.options_min_parameter 📋Firefox1/7/2025 572
api.ReportingObserver.worker_support Firefox6/2/2020 2252
api.SVGScriptElement.async Firefox8/29/2023 1069
api.SVGScriptElement.defer Firefox8/29/2023 1069
api.Selection.getComposedRanges 📋Safari9/18/2023 1049
api.SourceBuffer.appendBufferAsync Firefox9/5/2018 2888
api.SourceBuffer.removeAsync Firefox9/5/2018 2888
api.SourceBuffer.textTracks 📋Safari10/16/2014 4308
Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SpeechGrammar 📋Firefox1/26/2016 3841
Firefox: Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out.
api.SpeechGrammar.SpeechGrammar Firefox1/26/2016 3841
Firefox: Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out.
api.SpeechGrammar.src 📋Firefox1/26/2016 3841
Firefox: Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out.
api.SpeechGrammar.weight 📋Firefox1/26/2016 3841
Firefox: Note that currently only the speech synthesis part is available in Firefox Desktop - the speech recognition part will be available soon, once the required internal permissions are sorted out.
api.SpeechRecognitionErrorEvent.SpeechRecognitionErrorEvent 📋Safari4/26/2021 1924
api.SpeechRecognitionEvent.SpeechRecognitionEvent 📋Safari4/26/2021 1924
api.Text.getBoxQuads 📋Firefox7/22/2014 4394
api.VideoTrackGenerator 📋Safari9/16/2024 685
api.VideoTrackGenerator.VideoTrackGenerator 📋Safari9/16/2024 685
api.VideoTrackGenerator.muted 📋Safari9/16/2024 685
api.VideoTrackGenerator.track 📋Safari9/16/2024 685
api.VideoTrackGenerator.writable 📋Safari9/16/2024 685
api.WebGLActiveInfo.worker_support Firefox9/20/2022 1412
api.WebGLBuffer.worker_support Firefox9/20/2022 1412
api.WebGLContextEvent.worker_support Firefox9/20/2022 1412
api.WebGLFramebuffer.worker_support Firefox9/20/2022 1412
api.WebGLProgram.worker_support Firefox9/20/2022 1412
api.WebGLRenderbuffer.worker_support Firefox9/20/2022 1412
api.WebGLRenderingContext.worker_support Firefox9/20/2022 1412
api.WebGLShader.worker_support Firefox9/20/2022 1412
api.WebGLShaderPrecisionFormat.worker_support Firefox9/20/2022 1412
api.WebGLTexture.worker_support Firefox9/20/2022 1412
api.WebGLUniformLocation.worker_support Firefox9/20/2022 1412
api.WebTransport.WebTransport.options_allowPooling_parameter 📋Firefox6/6/2023 1153
api.WebTransport.WebTransport.options_congestionControl_parameter 📋Firefox6/6/2023 1153
api.WebTransport.WebTransport.options_requireUnreliable_parameter 📋Firefox6/6/2023 1153
api.WebTransport.congestionControl 📋Firefox6/6/2023 1153
api.WebTransport.createBidirectionalStream.options_sendOrder_parameter 📋Firefox10/24/2023 1013
api.WebTransport.createUnidirectionalStream.options_sendOrder_parameter 📋Firefox10/24/2023 1013
api.WebTransport.getStats 📋Firefox6/6/2023 1153
Firefox: Method is defined but throws a not-implemented error.Firefox for Android: Method is defined but throws a not-implemented error.
api.WebTransport.reliability 📋Firefox6/6/2023 1153
api.WebTransportBidirectionalStream.readable.returns_WebTransportReceiveStream 📋Firefox6/6/2023 1153
api.WebTransportBidirectionalStream.writable.returns_WebTransportSendStream 📋Firefox6/6/2023 1153
api.WebTransportReceiveStream 📋Firefox6/6/2023 1153
api.WebTransportReceiveStream.getStats 📋Firefox6/6/2023 1153
api.WebTransportSendStream 📋Firefox6/6/2023 1153
api.WebTransportSendStream.getStats 📋Firefox6/6/2023 1153
api.WebTransportSendStream.getWriter 📋Firefox6/6/2023 1153
api.WebTransportSendStream.sendOrder 📋Firefox12/19/2023 957
api.WindowClient.ancestorOrigins 📋Safari9/12/2022 1420
api.WorkerNavigator.globalPrivacyControl 📋Firefox11/21/2023 985
Firefox: Opt-in to GPC by setting the preference privacy.globalprivacycontrol.enabled to true.