Tutorials Exercises Get Certified Services Menu
Log in
Sign Up Spaces Bootcamps

HTML Audio/Video DOM loadedmetadata Event

❮ HTML Audio/Video DOM Reference


Alert when metadata for the video is loaded:

let vid = document.getElementById("myVideo");
vid.onloadedmetadata = function() {
    alert("Metadata for video loaded");
Try it Yourself »

More "Try it Yourself" examples below.

Definition and Usage

The loadedmetadata event occurs when metadata for the specified audio/video has been loaded.

Metadata for audio/video consists of: duration, dimensions (video only) and text tracks.

During the loading process of an audio/video, the following events occur, in this order:

  1. loadstart
  2. durationchange
  3. loadedmetadata
  4. loadeddata
  5. progress
  6. canplay
  7. canplaythrough

Browser Support

The numbers in the table specify the first browser version that fully supports the event.

loadedmetadata Yes 9.0 Yes Yes Yes



<audio|video onloadedmetadata="myScript">Try it

In JavaScript:

audio|video.onloadedmetadata=function(){myScript};Try it

In JavaScript, using the addEventListener() method:

audio|video.addEventListener("loadedmetadata", myScript);Try it

Technical Details

Supported HTML tags: <audio> and <video>
Supported JavaScript objects: Audio, Video

More Examples


Alert when metadata for the audio is loaded:

let aud = document.getElementById("myAudio");
aud.onloadedmetadata = function() {
    alert("Metadata for audio loaded");
Try it Yourself »

❮ HTML Audio/Video DOM Reference