HTMLMediaElement: loadedmetadata event - Web APIs 编辑

The loadedmetadata event is fired when the metadata has been loaded.

Additional Properties

Examples

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

Using addEventListener():

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

video.addEventListener('loadedmetadata', (event) => {
  console.log('The duration and dimensions ' + '
      of the media and tracks are now known. ');
});

Using the onloadedmetadata event handler property:

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

video.onloadedmetadata = (event) => {
  console.log('The duration and dimensions ' + '
      of the media and tracks are now known. ');
};

Specifications

Browser compatibility

BCD tables only load in the browser

Related Events

• HTMLMediaElement: playing event
• HTMLMediaElement: waiting event
• HTMLMediaElement: seeking event
• HTMLMediaElement: seeked event
• HTMLMediaElement: ended event
• HTMLMediaElement: loadedmetadata event
• HTMLMediaElement: loadeddata event
• HTMLMediaElement: canplay event
• HTMLMediaElement: canplaythrough event
• HTMLMediaElement: durationchange event
• HTMLMediaElement: timeupdate event
• HTMLMediaElement: play event
• HTMLMediaElement: pause event
• HTMLMediaElement: ratechange event
• HTMLMediaElement: volumechange event
• HTMLMediaElement: suspend event
• HTMLMediaElement: emptied event
• HTMLMediaElement: stalled event

See also

• HTMLAudioElement
• HTMLVideoElement
• <audio>
• <video>

• This event is part of gecko's Audio API extension