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devicechange

A devicechange event is sent to a MediaDevices instance whenever a media device such as a camera, microphone, or speaker is connected to or removed from the system. It's a generic Event with no added properties.

General info

Specification: Media Capture and Streams
Interface: Event
Bubbles: No
Cancelable: No
Target: MediaDevices
Default Action: None

Properties

Property	Type	Description
`target`Read only	`EventTarget`	The event target (the topmost target in the DOM tree).
`type` Read only	`DOMString`	The type of event.
`bubbles` Read only	`Boolean`	Whether the event normally bubbles or not
`cancelable` Read only	`Boolean`	Whether the event is cancellable or not?

Related events

None.

Example

See Example in MediaDevices.ondevicechange for an example that uses devicechange events to update lists of devices onscreen.

Specifications

Specification	Status	Comment
Media Capture and Streams The definition of 'devicechange' in that specification.	Editor's Draft	Initial specification.

Browser compatibility

Feature	Chrome	Firefox (Gecko)	Edge	Internet Explorer	Opera	Safari (WebKit)
Basic support	52.0	51 (51)^[1]	(Yes)	?	?	39	?

Feature	Android	Android Webview	Edge	Firefox Mobile (Gecko)	Firefox OS	IE Mobile	Opera Mobile	Safari Mobile	Chrome for Android
Basic support	No support	No support	(Yes)	?	?	?	39	?	No support

[1] Support for the devicechange event and for MediaDevices.ondevicechange landed in Firefox 51, but only for Mac, and disabled by default. It can be enabled by setting the preference media.ondevicechange.enabled to true. Support for this event was added for Linux and Windows—and it was enabled by default—starting in Firefox 52.