The TrackEvent() constructor creates and returns a new TrackEvent object describing an event which occurred on a list of tracks (AudioTrackList, VideoTrackList, or TextTrackList).
The TrackEvent() constructor creates and returns a new TrackEvent object describing an event which occurred on a list of tracks (AudioTrackList, VideoTrackList, or TextTrackList).
js
new TrackEvent(type) new TrackEvent(type, options)
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.
A new TrackEvent object, initialized as described by the inputs to the constructor.
| Specification |
|---|
| HTML Standard # the-trackevent-interface |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
TrackEvent |
23 | 14 | 27 | No | 15 | 6 | 4.4 | 25 | 27 | 14 | 7 | 1.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/TrackEvent/TrackEvent