TextTrackList: change event

The change event is fired when a text track is made active or inactive, or a TextTrackList is otherwise changed.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

addEventListener("change", (event) => { })

onchange = (event) => { }

Event type

A generic Event with no added properties.

Examples

Using addEventListener():

const mediaElement = document.querySelectorAll("video, audio")[0];
mediaElement.textTracks.addEventListener("change", (event) => {
  console.log(`'${event.type}' event fired`);
});

Using the onchange event handler property:

const mediaElement = document.querySelector("video, audio");
mediaElement.textTracks.onchange = (event) => {
  console.log(`'${event.type}' event fired`);
};

Specifications

Browser compatibility

See also

• Related events: addtrack, removetrack
• This event on VideoTrackList targets: change
• This event on AudioTrackList targets: change
• Media Capture and Streams API
• WebRTC