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    The loop property of the AudioBufferSourceNode interface is a Boolean indicating if the audio asset must be replayed when the end of the AudioBuffer is reached.

    The loop property's default value is false.


    var source = audioCtx.createBufferSource();
    source.loop = true;


    A boolean.


    In this example, the AudioContext.decodeAudioData function is used to decode an audio track and put it into an AudioBufferSourceNode. Buttons are provided to play and stop the audio playback, and a slider control is used to change the playbackRate property value on the fly. When the audio is played, it loops.

    function getData() {
      source = audioCtx.createBufferSource();
      request = new XMLHttpRequest();
 'GET', 'viper.ogg', true);
      request.responseType = 'arraybuffer';
      request.onload = function() {
        var audioData = request.response;
        audioCtx.decodeAudioData(audioData, function(buffer) {
            myBuffer = buffer;
            source.buffer = myBuffer;
            source.playbackRate.value = playbackControl.value;
            source.loop = true;
          function(e){"Error with decoding audio data" + e.err});
    // wire up buttons to stop and play audio, and range slider control
    play.onclick = function() {
      play.setAttribute('disabled', 'disabled');


    Specification Status Comment
    Web Audio API
    The definition of 'loop' in that specification.
    Working Draft  

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support 14 webkit 23 Not supported 15 webkit
    22 (unprefixed)
    6 webkit
    Feature Android Chrome Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
    Basic support Not supported 28 webkit 25 1.2 Not supported Not supported webkit

    See also

    Document Tags and Contributors

    Contributors to this page: teoli, brianblakely, chrisdavidmills
    Last updated by: brianblakely,