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.


var isFullscreenAvailable = document.fullscreenEnabled;

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


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


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

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support ? 10.0 (10.0) as mozFullScreenEnabled
47.0 (47.0) (behind full-screen-api.unprefix.enabled
? ? ?
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? 10.0 (10.0)as mozFullScreenEnabled
47.0 (47.0) (behind full-screen-api.unprefix.enabled
? ? ?

See also


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API Document Fullscreen API Property Read-only Reference