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 [[../../../../../../../mdn.github.io/webaudio-examples/decode-audio-data/index|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 APIThe definition of 'loop' in that specification. | Working Draft |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
loop
|
Chrome
Full support 15 |
Edge
Full support 12 |
Firefox
Full support 25 |
IE
No support No |
Opera
Full support 15 |
Safari
Full support 6 |
WebView Android
Full support Yes |
Chrome Android
Full support 18 |
Firefox Android
Full support 26 |
Opera Android
Full support 14 |
Safari iOS
Full support 6 |
Samsung Internet Android
Full support 1.0 |
Legend
- Full support
- Full support
- No support
- No support
See also
AudioBufferSourceNode.loop by Mozilla Contributors is licensed under CC-BY-SA 2.5.