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    HTMLMediaElement.readyState

    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
    WHATWG HTML Living Standard
    The definition of 'HTMLMediaElement.readyState' in that specification.    		 Living Standard No change from HTML5
    HTML5
    The definition of 'HTMLMediaElement.readyState' in that specification.    		 Recommendation Initial definition.

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support (Yes) 3.5 (1.9.1) [1] 9 ? ?
    Feature Android Firefox Mobile (Gecko) Firefox OS (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support (Yes) (Yes) (Yes) ? (Yes) (Yes)

    [1] The NETWORK_LOADED state was removed to align with the HTML spec in Gecko 2.0 (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1). 

    See also

    Document Tags and Contributors

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     Contributors to this page: tylerpaige, markg
     Last updated by: tylerpaige,