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The Document.fullscreenEnabled read-only property returns a Boolean that reports whether or not full-screen mode is available. Full screen mode is available only for a page that has no windowed plug-ins in any of its documents, and if all <iframe> elements which contain the document have their allowfullscreen attribute set.

Although this property is read-only, it will not throw if it is modified (even in strict mode); the setter is a no-operation and it will be ignored.

Syntax

var isFullscreenAvailable = document.fullscreenEnabled;

On return, isFullscreenAvailable is true if the document can be put into full-screen mode.

Example

function requestFullScreen() {
  if (document.fullscreenEnabled) {
    videoElement.requestFullScreen();
  } else {
    console.log('Your browser cannot use fullscreen right now');
  }
}

Specifications

Specification Status Comment
Fullscreen API
The definition of 'Document.fullscreenEnabled' in that specification.
Living Standard Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support 45
Full support 45
Full support Yes
Prefixed
Prefixed Requires the vendor prefix: webkit
Edge ? Firefox Full support 64
Full support 64
Full support 47
Disabled
Disabled From version 47: this feature is behind the full-screen-api.unprefix.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Full support 10
Alternate Name
Alternate Name Uses the non-standard name: mozFullScreenEnabled
IE ? Opera ? Safari ? WebView Android Full support 45
Full support 45
Full support Yes
Prefixed
Prefixed Requires the vendor prefix: webkit
Chrome Android Full support 45
Full support 45
Full support Yes
Prefixed
Prefixed Requires the vendor prefix: webkit
Edge Mobile ? Firefox Android Full support 64
Full support 64
Full support 47
Disabled
Disabled From version 47: this feature is behind the full-screen-api.unprefix.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Full support 10
Alternate Name
Alternate Name Uses the non-standard name: mozFullScreenEnabled
Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
User must explicitly enable this feature.
User must explicitly enable this feature.
Uses a non-standard name.
Uses a non-standard name.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.

See also

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