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The HTMLMediaElement.volume property sets the volume at which the media will be played. 
Syntax
var volume = video.volume; //1
Value
A double values must fall between 0 and 1, where 0 is effectively muted and 1 is the loudest possible value.
Example
var obj = document.createElement('audio');
console.log(obj.volume); // 1
obj.volume = 0.75;
Specifications
| Specification | Status | Comment | 
|---|---|---|
| WHATWG HTML Living Standard The definition of 'HTMLMediaElement.volume' in that specification. | Living Standard | No change from HTML5 | 
| HTML5 The definition of 'HTMLMediaElement.volume' in that specification. | Recommendation | Initial definition. | 
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari | 
|---|---|---|---|---|---|
| volumeproperty | 3.0 | 20.0 (20.0) | 9 | ? | ? | 
See also
- The interface defining it, HTMLMediaElement.