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.
Syntax
var source = audioCtx.createBufferSource(); source.loop = true;
Value
A boolean.
Example
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.
Note: You can run the full example live (or view the source.)
function getData() {
source = audioCtx.createBufferSource();
request = new XMLHttpRequest();
request.open('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.connect(audioCtx.destination);
source.loop = true;
},
function(e){"Error with decoding audio data" + e.err});
}
request.send();
}
// wire up buttons to stop and play audio, and range slider control
play.onclick = function() {
getData();
source.start(0);
play.setAttribute('disabled', 'disabled');
playbackControl.removeAttribute('disabled');
}
Specification
| 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 | 6 webkit |