The HTMLMediaElement.defaultMuted property reflects the muted HTML attribute, which indicates whether the media element's audio output should be muted by default. This property has no dynamic effect. To mute and unmute the audio output, use the muted property.
var dMuted = video.defaultMuted; audio.defaultMuted = true;
A Boolean. A value of true means that the audio output will be muted by default.
var videoEle = document.createElement('video');
videoEle.defaultMuted = true;
console.log(videoEle.outerHTML); // <video muted=""></video>
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'HTMLMediaElement.defaultMuted' in that specification. | Living Standard | No change from HTML5 |
| HTML5 The definition of 'HTMLMediaElement.defaultMuted' in that specification. | Recommendation | Initial definition. |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | Yes | Yes | 11 | ? | Yes | Yes |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Yes | Yes | Yes | 14 | Yes | Yes | ? |
HTMLMediaElement.HTMLMediaElement.mutedHTMLMediaElement.volume
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/defaultMuted