1. Web
  2. Web APIs
  3. TrackEvent
  4. TrackEvent()

TrackEvent: TrackEvent() constructor

The TrackEvent() constructor creates and returns a new TrackEvent object describing an event which occurred on a list of tracks (AudioTrackList, VideoTrackList, or TextTrackList).

Syntax

js
new TrackEvent(type)
new TrackEvent(type, options)

Parameters

type

A string with the name of the event. It is case-sensitive and browsers set it to addtrack or removetrack.

options Optional

An object that, in addition of the properties defined in Event(), can have the following properties:

track Optional

The track to which the event refers; this is null by default, but should be set to a VideoTrack, AudioTrack, or TextTrack as appropriate given the type of track.

Return value

A new TrackEvent object, initialized as described by the inputs to the constructor.

Specifications

Specification
HTML
# the-trackevent-interface

Browser compatibility

Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
TrackEvent() constructor
Chrome – Full support
Chrome 23 (Release date: 2012-11-06)
footnote Full support
Edge – Full support
Edge 14 (Release date: 2016-08-02)
footnote Full support
Firefox – Full support
Firefox 27 (Release date: 2014-02-04)
footnote Full support
Opera – Full support
Opera 15 (Release date: 2013-07-02)
footnote Full support
Safari – Full support
Safari 6 (Release date: 2012-07-25)
footnote Full support
Chrome Android – Full support
Chrome Android 25 (Release date: 2013-02-27)
footnote Full support
Firefox for Android – Full support
Firefox for Android 27 (Release date: 2014-02-04)
footnote Full support
Opera Android – Full support
Opera Android 14 (Release date: 2013-05-21)
footnote Full support
Safari on iOS – Full support
Safari on iOS 7 (Release date: 2013-09-18)
footnote Full support
Samsung Internet – Full support
Samsung Internet 1.5 (Release date: 2013-09-25)
footnote Full support
WebView Android – Full support
WebView Android 4.4 (Release date: 2013-12-09)
footnote Full support
WebView on iOS – Full support
WebView on iOS 7 (Release date: 2013-09-18)
footnote Full support

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Full support

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