The onstatechange property of the BaseAudioContext interface defines an event handler function to be called when the statechange event fires: this occurs when the audio context's state changes.


baseAudioContext.onstatechange = function() { ... };


The following snippet is taken from our AudioContext states demo (see it running live.) The onstatechange hander is used to log the current state to the console every time it changes.

audioCtx.onstatechange = function() {


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

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
onstatechangeChrome Full support 43Edge ? Firefox Full support 40IE No support NoOpera Full support YesSafari ? WebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS No support NoSamsung Internet Android Full support Yes


Full support  
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Compatibility unknown  
Compatibility unknown

See also