AudioNode: numberOfOutputs property
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.
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
BCD tables only load in the browser