Deprecated
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The obsolete Document interface's fullscreen read-only property reports whether or not the document is currently displaying content in full-screen mode.

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.

Note: Since this property is deprecated, you can determine if full-screen mode is active on the document by checking to see if Document.fullscreenElement is not null.

Syntax

var isFullScreen = document.fullscreen;

Value

A Boolean value which is true if the document is currently displaying an element in full-screen mode; otherwise, the value is false.

Example

This simple function reports whether or not full-screen mode is currently active, using the obsolete fullscreen property.

function isDocumentInFullScreenMode() {
  return document.fullscreen;  
}

This next example, on the other hand, uses the current fullscreenElement property to determine the same thing:

function isDocumentInFullScreenMode() {
  return document.fullscreenElement !== null;
}

If fullscreenElement isn't null, this returns true, indicating that full-screen mode is in effect.

Specifications

Specification Status Comment
Fullscreen API
The definition of 'Document.fullscreen' in that specification.
Living Standard Initial definition (as an obsolete property).

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic support
Deprecated
Chrome Full support Yes
Alternate Name
Full support Yes
Alternate Name
Alternate Name Uses the non-standard name: webkitIsFullScreen
Edge ? Firefox Full support 64
Full support 64
Full support 49
Disabled
Disabled From version 49: 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 9
Alternate Name
Alternate Name Uses the non-standard name: mozFullScreen
IE ? Opera ? Safari Full support Yes
Alternate Name
Full support Yes
Alternate Name
Alternate Name Uses the non-standard name: webkitIsFullScreen
WebView Android ? Chrome Android Full support Yes
Alternate Name
Full support Yes
Alternate Name
Alternate Name Uses the non-standard name: webkitIsFullScreen
Edge Mobile ? Firefox Android Full support 64
Full support 64
Full support 49
Disabled
Disabled From version 49: 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 9
Alternate Name
Alternate Name Uses the non-standard name: mozFullScreen
Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.
User must explicitly enable this feature.
User must explicitly enable this feature.
Uses a non-standard name.
Uses a non-standard name.

See also

Document Tags and Contributors

Last updated by: mfuji09,