Document.fullscreen

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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

	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
`fullscreen` Deprecated	Chrome No support No Alternate Name No support No Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullScreen`	Edge ?	Firefox Full support 64 Full support 64 No support 49 — 65 Disabled Disabled From version 49 until version 65 (exclusive): 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. No support 9 — 65 Alternate Name Alternate Name Uses the non-standard name: `mozFullScreen`	IE ?	Opera Full support Yes	Safari Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullScreen`	WebView Android No support No	Chrome Android No support No Alternate Name No support No Alternate Name Alternate Name Uses the non-standard name: `webkitIsFullScreen`	Firefox Android Full support 64 Full support 64 No support 49 — 65 Disabled Disabled From version 49 until version 65 (exclusive): 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. No support 9 — 65 Alternate Name Alternate Name Uses the non-standard name: `mozFullScreen`	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android ?

Legend

Full support: Full support
No support: No 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.