1. Web
  2. Web APIs
  3. VideoTrackList
  4. selectedIndex

VideoTrackList: selectedIndex property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The read-only VideoTrackList property selectedIndex returns the index of the currently selected track, if any, or -1 otherwise.

Value

A number indicating the index of the currently selected track, if any, or -1 otherwise.

Specifications

Specification
HTML
# dom-videotracklist-selectedindex-dev

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
selectedIndex
Chrome – No support
Chrome 37 (Release date: 2014-08-26)
disabled
disabled From version 37 users must explicitly set the enable-experimental-web-platform-features preference to enabled. To change preferences in Chrome, visit chrome://flags.
Edge – No support
Edge 12 – 18 (Release date: 2015-07-29)
unknown Support unknown
Edge – No support
Edge 79 (Release date: 2020-01-15)
disabled
disabled From version 79 users must explicitly set the enable-experimental-web-platform-features preference to enabled. To change preferences in Edge, visit about:flags.
Firefox – No support
Firefox 33 (Release date: 2014-10-14)
disabled
disabled From version 33 users must explicitly set the media.track.enabled preference to true. To change preferences in Firefox, visit about:config.
Opera – No support
Opera 24 (Release date: 2014-09-02)
disabled
disabled From version 24 users must explicitly set the enable-experimental-web-platform-features preference to enabled. To change preferences in Opera, visit opera://flags.
Safari – Full support
Safari 7 (Release date: 2013-10-22)
footnote Full support
Chrome Android – No support
Chrome Android 37 (Release date: 2014-09-03)
disabled
disabled From version 37 users must explicitly set the enable-experimental-web-platform-features preference to enabled. To change preferences in Chrome Android, visit chrome://flags.
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – No support
Opera Android
footnote No support
Safari on iOS – Full support
Safari on iOS 7 (Release date: 2013-09-18)
footnote Full support
Samsung Internet – No support
Samsung Internet
footnote No support
WebView Android – No support
WebView Android
footnote No support
WebView on iOS – Full support
WebView on iOS 7 (Release date: 2013-09-18)
footnote Full support

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Full support
No support
User must explicitly enable this feature.
Has more compatibility info.

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