The Navigator.mediaDevices read-only property returns a MediaDevices object, which provides access to connected media input devices like cameras and microphones, as well as screen sharing.

The MediaDevices singleton object. Usually, you just use this object's members directly, such as by calling navigator.mediaDevices.getUserMedia().

• Media Capture and Streams API: The entry point to the documentation about the entire Media Capture and Streams API.
• WebRTC API: Documentation about the WebRTC API, which is closely related.