The TextTrackList method getTrackById() returns the first TextTrack object from the track list whose id matches the specified string. This lets you find a specified track if you know its ID string.


var theTrack = TextTrackList.getTrackById(id);


A DOMString indicating the ID of the track to locate within the track list.

Return value

A TextTrack object indicating the first track found within the TextTrackList whose id matches the specified string. If no match is found, this method returns null.

The tracks are searched in their natural order; that is, in the order defined by the media resource itself, or, if the resource doesn't define an order, the relative order in which the tracks are declared by the media resource.


Specification Status Comment
HTML Living Standard
The definition of 'TextTrackList.getTrackById()' in that specification.
Living Standard  

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
getTrackByIdChrome Full support YesEdge Full support 18Firefox Full support YesIE No support NoOpera ? Safari Full support 6WebView Android Full support YesChrome Android Full support YesFirefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android Full support Yes


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Compatibility unknown