MediaTrackSupportedConstraints: volume property
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
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().
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.
Examples
js
const result = document.getElementById("result");
const supported = navigator.mediaDevices.getSupportedConstraints().volume;
result.textContent = supported ? "Supported!" : "Not supported!";
Result
Browser compatibility
BCD tables only load in the browser