The addEventListener() method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.
Optionaloptions: boolean | AddEventListenerOptionsThe addEventListener() method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.
Optionaloptions: boolean | AddEventListenerOptionsThe dispatchEvent() method of the EventTarget sends an Event to the object, (synchronously) invoking the affected event listeners in the appropriate order. The normal event processing rules (including the capturing and optional bubbling phase) also apply to events dispatched manually with dispatchEvent().
The enumerateDevices() method of the MediaDevices interface requests a list of the currently available media input and output devices, such as microphones, cameras, headsets, and so forth. The returned Promise is resolved with an array of MediaDeviceInfo objects describing the devices.
The getDisplayMedia() method of the MediaDevices interface prompts the user to select and grant permission to capture the contents of a display or portion thereof (such as a window) as a MediaStream.
Optionaloptions: DisplayMediaStreamOptionsThe getSupportedConstraints() method of the MediaDevices interface returns an object based on the MediaTrackSupportedConstraints dictionary, whose member fields each specify one of the constrainable properties the user agent understands.
The getUserMedia() method of the MediaDevices interface prompts the user for permission to use a media input which produces a MediaStream with tracks containing the requested types of media.
Optionalconstraints: MediaStreamConstraintsThe removeEventListener() method of the EventTarget interface removes an event listener previously registered with EventTarget.addEventListener() from the target. The event listener to be removed is identified using a combination of the event type, the event listener function itself, and various optional options that may affect the matching process; see Matching event listeners for removal.
Optionaloptions: boolean | EventListenerOptionsThe removeEventListener() method of the EventTarget interface removes an event listener previously registered with EventTarget.addEventListener() from the target. The event listener to be removed is identified using a combination of the event type, the event listener function itself, and various optional options that may affect the matching process; see Matching event listeners for removal.
Optionaloptions: boolean | EventListenerOptions
The
MediaDevicesinterface of the Media Capture and Streams API provides access to connected media input devices like cameras and microphones, as well as screen sharing. In essence, it lets you obtain access to any hardware source of media data. Available only in secure contexts.MDN Reference