The HTMLMediaElement.readyState property indicates the readiness state of the media.

Syntax

var readyState = audioOrVideo.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 Status Comment
HTML Living Standard
The definition of 'HTMLMediaElement.readyState' in that specification.
Living Standard  
HTML5
The definition of 'HTMLMediaElement.readyState' in that specification.
Recommendation  

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support YesEdge Full support YesFirefox Full support 3.5IE Full support 9Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also

Document Tags and Contributors

Contributors to this page: sideshowbarker, fscholz, erikadoyle, tylerpaige, markg
Last updated by: sideshowbarker,