HTMLTrackElement: cuechange event
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2019.
The cuechange event fires when a TextTrack has changed the currently displaying cues. The event is fired on both the TextTrack and the HTMLTrackElement in which it's being presented, if any.
Syntax
Use the event name in addEventListener():
addEventListener("cuechange", (event) => { })
Alternatively, assign to the event handler property of the interface:
oncuechange = (event) => { }
Event type
A generic Event with no added properties.
Examples
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("text-track");
textTrackElem.addEventListener("cuechange", (event) => {
let cues = event.target.track.activeCues;
});
Alternatively, you can use the oncuechange event handler (but note that this replaces other event listeners added using oncuechange, if any):
let textTrackElem = document.getElementById("text-track");
textTrackElem.oncuechange = (event) => {
let cues = event.target.track.activeCues;
};
Specifications
| Specification |
|---|
| HTML> # event-media-cuechange> |
| HTML> # handler-oncuechange> |