The defaultValue
read-only property of the AudioParam
interface represents the initial value of the attributes as defined by the specific AudioNode
creating the AudioParam
.
var defaultVal = audioParam.defaultValue;
A floating-point Number
.
const audioCtx = new AudioContext(); const gainNode = audioCtx.createGain(); const defaultVal = gainNode.gain.defaultValue; console.log(defaultVal); //1 console.log(defaultVal === gainNode.gain.value); //true
Specification | Status | Comment |
---|---|---|
Web Audio API The definition of 'defaultValue' in that specification. | Working Draft |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | 14 | 12 | 25 | No | 15 | 6 |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | Yes | 18 | Yes | 26 | 15 | ? | Yes |
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https://developer.mozilla.org/en-US/docs/Web/API/AudioParam/defaultValue