This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The groupId readonly property of the MediaDeviceInfo interface returns a DOMString that is a group identifier. Two devices have the same group identifier if they belong to the same physical device; for example, a monitor with both a built-in camera and microphone.


var groupID = MediaDeviceInfo.groupId


A DOMString.


Specification Status Comment
Media Capture and Streams
The definition of 'groupId' in that specification.
Candidate Recommendation Initial definition.

Browser Compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support5511239 No ?2 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support551551 Yes39 ?2 No6.0

1. For earlier versions, this interface is available through the adapter.js polyfill

2. This interface is available in Opera through the adapter.js polyfill.

Document Tags and Contributors

Contributors to this page: fscholz, david_ross, jpmedley
Last updated by: fscholz,