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index.md
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---
title: "AudioNode: numberOfInputs property"
short-title: numberOfInputs
slug: Web/API/AudioNode/numberOfInputs
page-type: web-api-instance-property
browser-compat: api.AudioNode.numberOfInputs
---
{{APIRef("Web Audio API")}}
The `numberOfInputs` property of
the {{domxref("AudioNode")}} interface returns the number of inputs feeding the
node. Source nodes are defined as nodes having a `numberOfInputs`
property with a value of 0.
## 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.numberOfInputs); // 0
console.log(gainNode.numberOfInputs); // 1
console.log(audioCtx.destination.numberOfInputs); // 1
```
## Specifications
{{Specifications}}
## Browser compatibility
{{Compat}}
## See also
- [Using the Web Audio API](/en-US/docs/Web/API/Web_Audio_API/Using_Web_Audio_API)