The MediaStreamTrackEvent() constructor returns a newly created MediaStreamTrackEvent object, which represents an event announcing that a MediaStreamTrack has been added to or removed from a MediaStream.
var trackEvent = new MediaStreamTrackEvent(type, {track: aMediaStreamTrack});
The MediaStreamTrackEvent() constructor also inherits arguments from Event().
typeDOMString representing the name of the type of the MediaStreamTrackEvent. It is case-sensitive and can be "addtrack" or "removetrack".trackMediaStreamTrack object representing the track which was added to or removed from the stream.A new MediaStreamTrackEvent, initialized based on the provided options.
| Specification | Status | Comment |
|---|---|---|
| Media Capture and Streams The definition of 'MediaStreamTrackEvent()' in that specification. | Candidate Recommendation |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | 55 | ? | 50 | No | 42 | ? |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | 55 | 55 | ? | 50 | 42 | ? | 6.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamTrackEvent/MediaStreamTrackEvent