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The read-only context property of the AudioNode interface returns the associated BaseAudioContext, that is the object representing the processing graph the node is participating in.


var aContext = anAudioNode.context;


The AudioContext or OfflineAudioContext object that was used to construct this AudioNode.


const AudioContext = window.AudioContext || window.webkitAudioContext;
const audioCtx = new AudioContext();

const oscillator = audioCtx.createOscillator();
const gainNode = audioCtx.createGain();

console.log(oscillator.context); // AudioContext
console.log(oscillator.context === audioCtx); // true


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

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
contextChrome Full support 14Edge Full support 12Firefox Full support 25IE No support NoOpera Full support 15Safari Full support 6WebView Android Full support YesChrome Android Full support 18Firefox Android Full support 26Opera Android Full support 14Safari iOS Full support YesSamsung Internet Android Full support Yes


Full support  
Full support
No support  
No support

See also