The HTMLMediaElement.duration property gives the length of the media in seconds, or zero if no media data is available.
Syntax
var myDuration = audioOrVideo.duration
Value
A double. If the media data is available but the length is unknown, this value is NaN. If the media is streamed and has no predefined length, the value is Inf.
Example
var obj = document.createElement('video');
console.log(obj.duration); // NaN
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'HTMLMediaElement.duration' in that specification. |
Living Standard | No change from HTML5 |
| HTML5 The definition of 'HTMLMediaElement.duration' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | Yes | Yes | 3.5 | 9 | Yes | Yes |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | Yes | Yes | Yes | Yes | Yes | Yes | ? |
See also
- The interface defining it,
HTMLMediaElement.