Web/API/MediaStreamTrackEvent/MediaStreamTrackEvent

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.

Syntax

var trackEvent = new MediaStreamTrackEvent(type, {track: aMediaStreamTrack});

Parameters

The MediaStreamTrackEvent() constructor also inherits arguments from Event().

type

A DOMString representing the name of the type of the MediaStreamTrackEvent. It is case-sensitive and can be "addtrack" or "removetrack".

track

A MediaStreamTrack object representing the track which was added to or removed from the stream.

Return value

A new MediaStreamTrackEvent, initialized based on the provided options.

Specifications

Specification	Status	Comment
Media Capture and StreamsThe definition of 'MediaStreamTrackEvent()' in that specification.	Candidate Recommendation

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
MediaStreamTrackEvent() constructor	Chrome Full support 55	Edge Full support ≤79	Firefox Full support 50	IE No support No	Opera Full support 42	Safari ?	WebView Android Full support 55	Chrome Android Full support 55	Firefox Android Full support 50	Opera Android Full support 42	Safari iOS ?	Samsung Internet Android Full support 6.0

Legend

Full support  

Full support

No support  

No support

Compatibility unknown  

Compatibility unknown

See also

• addtrack and removetrack events
• MediaStreamTrack
• MediaStream
• Media Streams API

MediaStreamTrackEvent() by Mozilla Contributors is licensed under CC-BY-SA 2.5.