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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.

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.

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

None.

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

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	48	?	51 Disabled 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.	?	?	?
`onchange`	48	?	51 Disabled 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.	?	?	?
`value`	48	?	51 Disabled 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.	?	?	?

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	No	48	?	51 Disabled 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.	?	?	?
`onchange`	No	48	?	51 Disabled 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.	?	?	?
`value`	No	48	?	51 Disabled 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.	?	?	?

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https://developer.mozilla.org/en-US/docs/Web/API/PresentationAvailability