The addtrack
event is fired when a video track is added to a VideoTrackList
.
VideoTrackList: addtrack event
Syntax
Use the event name in methods like addEventListener()
, or set an event handler property.
addEventListener('addtrack', event => { }) onaddtrack = event => { }
Event type
An TrackEvent
. Inherits from Event
.
Event properties
In addition to the properties listed below, properties from the parent interface, Event
, are available.
-
track
Read only -
The newly-added
VideoTrack
the event is in reference to.
Examples
Using addEventListener()
:
const videoElement = document.querySelector('video'); videoElement.videoTracks.addEventListener('addtrack', (event) => { console.log(`Video track: ${event.track.label} added`); });
Using the onaddtrack
event handler property:
const videoElement = document.querySelector('video'); videoElement.videoTracks.onaddtrack = (event) => { console.log(`Video track: ${event.track.label} added`); };
Specifications
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
addtrack_event |
37
|
79
12-79
|
33
|
10
|
24
|
7
|
No
|
37
|
No
|
24
|
7
|
No
|
See also
- Related events:
removetrack
,change
- This event on
AudioTrackList
targets:addtrack
- This event on
MediaStream
targets:addtrack
- Media Streams API
- WebRTC
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/VideoTrackList/addtrack_event