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AudioNode: numberOfOutputs property

The numberOfOutputs property of the AudioNode interface returns the number of outputs coming out of the node. Destination nodes — like AudioDestinationNode — have a value of 0 for this attribute.

Value

An integer ≥ 0.

Examples

js

const audioCtx = new AudioContext();

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

oscillator.connect(gainNode).connect(audioCtx.destination);

console.log(oscillator.numberOfOutputs); // 1
console.log(gainNode.numberOfOutputs); // 1
console.log(audioCtx.destination.numberOfOutputs); // 0

Specifications

Specification
Web Audio API
# dom-audionode-numberofoutputs

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
numberOfOutputs 14 12 25 No 15 6 4.4.3 18 25 14 6 1.0

See also

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https://developer.mozilla.org/en-US/docs/Web/API/AudioNode/numberOfOutputs