HTMLMediaElement: durationchange 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 2015.

The durationchange event is fired when the duration attribute has been updated.

Syntax

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

js
addEventListener("durationchange", (event) => { })

ondurationchange = (event) => { }

Event type

A generic Event.

Examples

These examples add an event listener for the HTMLMediaElement's durationchange event, then post a message when that event handler has reacted to the event firing.

Using addEventListener():

js
const video = document.querySelector("video");

video.addEventListener("durationchange", (event) => {
  console.log("Not sure why, but the duration of the video has changed.");
});

Using the ondurationchange event handler property:

js
const video = document.querySelector("video");

video.ondurationchange = (event) => {
  console.log("Not sure why, but the duration of the video has changed.");
};

Specifications

Specification
HTML
# event-media-durationchange
HTML
# handler-ondurationchange

Browser compatibility

See also