HTMLMediaElement: durationchange event

{{APIRef("HTMLMediaElement")}}

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

Syntax

Use the event name in methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}}, or set an event handler property.

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

ondurationchange = (event) => { }

Event type

A generic {{domxref("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():

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:

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

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

Related Events

• The HTMLMediaElement {{domxref("HTMLMediaElement.playing_event", 'playing')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.waiting_event", 'waiting')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.seeking_event", 'seeking')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.seeked_event", 'seeked')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.ended_event", 'ended')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.loadedmetadata_event", 'loadedmetadata')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.loadeddata_event", 'loadeddata')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.canplay_event", 'canplay')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.canplaythrough_event", 'canplaythrough')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.timeupdate_event", 'timeupdate')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.play_event", 'play')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.pause_event", 'pause')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.ratechange_event", 'ratechange')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.volumechange_event", 'volumechange')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.suspend_event", 'suspend')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.emptied_event", 'emptied')}} event
• The HTMLMediaElement {{domxref("HTMLMediaElement.stalled_event", 'stalled')}} event

See also

• {{domxref("HTMLAudioElement")}}
• {{domxref("HTMLVideoElement")}}
• {{HTMLElement("audio")}}
• {{HTMLElement("video")}}