Web/API/MediaTrackSupportedConstraints/volume

ObsoleteThis feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

The MediaTrackSupportedConstraints dictionary's volume property is a read-only Boolean value which is present (and set to true) in the object returned by MediaDevices.getSupportedConstraints() if and only if the user agent supports the volume constraint. If the constraint isn't supported, it's not included in the list, so this value will never be false.

You can access the supported constraints dictionary by calling navigator.mediaDevices.getSupportedConstraints().

Syntax

volumeConstraintSupported = supportedConstraintsDictionary.volume;

Value

This property is present in the dictionary (and its value is always true) if the user agent supports the volume constraint. If the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value.

Example

HTML content

<div id="result">
</div>

CSS content

#result {
  font: 14px "Arial", sans-serif;
}

JavaScript content

let result = document.getElementById("result");

if (navigator.mediaDevices.getSupportedConstraints().volume) {
  result.innerHTML = "Supported!";
} else {
  result.innerHTML = "Not supported!";
}

Result

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`volume` Deprecated'Non-standard'	Chrome Full support 52	Edge Full support ≤79	Firefox No support No	IE No support No	Opera Full support Yes	Safari ?	WebView Android Full support 52	Chrome Android Full support 52	Firefox Android No support No	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support 6.0

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
Non-standard. Expect poor cross-browser support.': Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.': Deprecated. Not for use in new websites.