Web/API/HTMLTrackElement/cuechange event

The cuechange event fires when a TextTrack has changed the currently displaying cues. The event is fired at both the TextTrack and at the HTMLTrackElement in which it's being presented, if any.

Bubbles	No
Cancelable	No
Interface	`Event`
Event handler	`oncuechange`

Examples

On the TextTrack

You can set up a listener for the cuechange event on a TextTrack using the addEventListener() method:

track.addEventListener('cuechange', function () {
  let cues = track.activeCues;  // array of current cues
});

Or you can just set the oncuechange event handler property:

track.oncuechange = function () {
  let cues = track.activeCues; // array of current cues
}

On the track element

The underlying TextTrack, indicated by the track property, receives a cuechange event every time the currently-presented cue is changed. This happens even if the track isn't associated with a media element.

If the track is associated with a media element, using the <track> element as a child of the <audio> or <video> element, the cuechange event is also sent to the HTMLTrackElement.

let textTrackElem = document.getElementById("texttrack");

textTrackElem.addEventListener("cuechange", (event) => {
  let cues = event.target.track.activeCues;
});

In addition, you can use the oncuechange event handler:

let textTrackElem = document.getElementById("texttrack");

textTrackElem.oncuechange = (event) => {
  let cues = event.target.track.activeCues;
});

Specifications

Specification	Status
HTML Living StandardThe definition of 'cuechange' in that specification.	Living Standard

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
`cuechange` event	Chrome Full support Yes	Edge Full support 12	Firefox Full support 31	IE ?	Opera ?	Safari Full support Yes	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support 31	Opera Android No support No	Safari iOS ?	Samsung Internet Android Full support Yes

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown