The id property contains a string which uniquely identifies the track represented by the AudioTrack. This ID can be used with the AudioTrackList.getTrackById() method to locate a specific track within the media associated with a media element.

The track ID can also be used as the fragment of a URL that loads the specific track (if the media supports media fragments).


var trackID =;


A DOMString which identifies the track, suitable for use when calling getTrackById() on an AudioTrackList such as the one specified by a media element's audioTracks property.


Specification Status Comment
HTML Living Standard
The definition of '' in that specification.
Living Standard
The definition of '' in that specification.

Browser compatibility

BCD tables only load in the browser