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 loopingEnabled = AudioBufferSourceNode.loop;
AudioBufferSourceNode.loop = true | false;
Value
A Boolean which is true
if looping is enabled; otherwise, the value is false
.
When looping is enabled, the sound begins playing at the time specified as the start point when start()
is called. When the time specified by the loopEnd
property is reached, playback continues at the time specified by loopStart
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.
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 | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | 14 webkit | (Yes) | 23 | No support | 15 webkit 22 (unprefixed) |
6 webkit |
Feature | Android | Chrome | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Phone | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|---|
Basic support | No support | 28 webkit | (Yes) | 25 | 1.2 | No support | No support | 6 webkit |