TrackEvent()

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

trackEvent = new TrackEvent(type, eventInfo);

Parameters

type
The type of track event which is described by the object: "addtrack" or "removetrack".
eventInfo Optional
An optional dictionary providing additional information configuring the new event; it can contain the following fields in any combination:
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.
bubbles Optional
A Boolean indicating whether the event bubbles or not.
cancelable Optional
A Boolean indicating whether or not the event can be canceled.
composed Optional
A Boolean indicating whether or not the event will trigger listeners outside of a shadow root; see Event.composed for more details.

Return value

A newly-created TrackEvent object, initialized as described by the inputs to the constructor.

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'TrackEvent()' in that specification.
Living Standard Initial definition.
HTML5
The definition of 'TrackEvent()' in that specification.
Recommendation Initial definition.

Browser compatibility

No compatibility data found. Please contribute data for "api.TrackEvent.TrackEvent" (depth: 1) to the MDN compatibility data repository.

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