The HTMLMediaElement.readyState
property indicates the readiness state of the media.
HTMLMediaElement.readyState
Value
An unsigned short
. Possible values are:
Constant | Value | Description |
---|---|---|
HAVE_NOTHING |
0 | No information is available about the media resource. |
HAVE_METADATA |
1 | Enough of the media resource has been retrieved that the metadata attributes are initialized. Seeking will no longer raise an exception. |
HAVE_CURRENT_DATA |
2 | Data is available for the current playback position, but not enough to actually play more than one frame. |
HAVE_FUTURE_DATA |
3 | Data for the current playback position as well as for at least a little bit of time into the future is available (in other words, at least two frames of video, for example). |
HAVE_ENOUGH_DATA |
4 | Enough data is available—and the download rate is high enough—that the media can be played through to the end without interruption. |
Examples
This example will listen for audio data to be loaded for the element `example`. It will then check if at least the current playback position has been loaded. If it has, the audio will play.
<audio id="example" preload="auto"> <source src="sound.ogg" type="audio/ogg" /> </audio>
var obj = document.getElementById('example'); obj.addEventListener('loadeddata', function() { if(obj.readyState >= 2) { obj.play(); } });
Specifications
Specification |
---|
HTML Standard # dom-media-readystate-dev |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
readyState |
1
|
12
|
3.5
|
5.5
|
≤12.1
|
3.1
|
≤37
|
18
|
4
|
≤12.1
|
3
|
1.0
|
See also
- The interface defining it,
HTMLMediaElement
.
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/readyState