Web/API/AudioTrackList/onremovetrack

The AudioTrackList onremovetrack event handler is called when the removetrack event occurs, indicating that an audio track has been removed from the media element, and therefore also from the AudioTrackList.

The event is passed into the event handler in the form of a TrackEvent object, whose track property identifies the track that was removed from the media element's AudioTrackList.

Note: You can also add a handler for the removetrack event using addEventListener().

Syntax

AudioTrackList.onremovetrack = eventHandler;

Value

Set onremovetrack to a function that accepts as input a TrackEvent object which indicates in its track property which audio track has been removed from the media element.

Example

This simple example just fetches the current number of audio tracks in the media element whenever a track is removed from the media element.

document.querySelector("my-video").audioTracks.onremovetrack = function(event) {
  myTrackCount = document.querySelector("my-video").audioTracks.length;
};

The current number of audio tracks remaining in the media element is obtained from AudioTrackList property length.

Specifications

Specification	Status	Comment
HTML Living StandardThe definition of 'AudioTrackList.onremovetrack' in that specification.	Living Standard
HTML5The definition of 'AudioTrackList.onremovetrack' in that specification.	Recommendation

Browser compatibility

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
`onremovetrack`	Chrome Full support 37 Disabled' Full support 37 Disabled' Disabled' From version 37: this feature is behind the `enable-experimental-web-platform-features` preference (needs to be set to `enabled`). To change preferences in Chrome, visit chrome://flags.	Edge Full support 79 Disabled' Full support 79 Disabled' Disabled' From version 79: this feature is behind the `enable-experimental-web-platform-features` preference (needs to be set to `enabled`). No support 12 — 79	Firefox Full support 33 Disabled' Full support 33 Disabled' Disabled' From version 33: this feature is behind the `media.track.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE Full support 10	Opera Full support 24 Disabled' Full support 24 Disabled' Disabled' From version 24: this feature is behind the `enable-experimental-web-platform-features` preference (needs to be set to `enabled`).	Safari Full support 6.1	WebView Android No support No	Chrome Android Full support 37 Disabled' Full support 37 Disabled' Disabled' From version 37: this feature is behind the `enable-experimental-web-platform-features` preference (needs to be set to `enabled`). To change preferences in Chrome, visit chrome://flags.	Firefox Android Full support 33 Disabled' Full support 33 Disabled' Disabled' From version 33: this feature is behind the `media.track.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	Opera Android Full support 24 Disabled' Full support 24 Disabled' Disabled' From version 24: this feature is behind the `enable-experimental-web-platform-features` preference (needs to be set to `enabled`).	Safari iOS Full support 7	Samsung Internet Android No support No

Legend

Full support: Full support
No support: No support
User must explicitly enable this feature.': User must explicitly enable this feature.

AudioTrackList.onremovetrack by Mozilla Contributors is licensed under CC-BY-SA 2.5.