PresentationAvailability

A PresentationAvailability object is associated with available presentation displays and represents the presentation display availability for a presentation request. If the controlling user agent can monitor the list of available presentation displays in the background (without a pending request to start()), the PresentationAvailability object MUST be implemented in a controlling browsing context.

The value attribute MUST return the last value it was set to. The value is updated by the monitor the list of available presentation displays algorithm.

The onchange attribute is an event handler whose corresponding event handler event type is change.

Properties

PresentationAvailability.value Read only: A boolean value indicating whether the given presentation display is available. The value attribute MUST return the last value it was set to.

Event handlers

PresentationAvailability.onchange: Indicates that the availability of the presentation display has changed.

Methods

None.

Specifications

Specification	Status	Comment
Presentation API The definition of 'PresentationAvailability interface' in that specification.	Candidate Recommendation	Initial definition.

Browser Compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`PresentationAvailability` Experimental	Chrome Full support 48	Edge ?	Firefox Full support 51 Disabled Full support 51 Disabled Disabled From version 51: this feature is behind the `dom.presentation.controller.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera Full support Yes	Safari ?	WebView Android No support No	Chrome Android Full support 48	Firefox Android Full support 51 Disabled Full support 51 Disabled Disabled From version 51: this feature is behind the `dom.presentation.controller.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support Yes
`onchange` Experimental	Chrome Full support 48	Edge ?	Firefox Full support 51 Disabled Full support 51 Disabled Disabled From version 51: this feature is behind the `dom.presentation.controller.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera Full support Yes	Safari ?	WebView Android No support No	Chrome Android Full support 48	Firefox Android Full support 51 Disabled Full support 51 Disabled Disabled From version 51: this feature is behind the `dom.presentation.controller.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support Yes
`value` Experimental	Chrome Full support 48	Edge ?	Firefox Full support 51 Disabled Full support 51 Disabled Disabled From version 51: this feature is behind the `dom.presentation.controller.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera Full support Yes	Safari ?	WebView Android No support No	Chrome Android Full support 48	Firefox Android Full support 51 Disabled Full support 51 Disabled Disabled From version 51: this feature is behind the `dom.presentation.controller.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support Yes

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
Experimental. Expect behavior to change in the future.: Experimental. Expect behavior to change in the future.
User must explicitly enable this feature.: User must explicitly enable this feature.