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Window: fullScreen property

Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.

The fullScreen property of the Window interface indicates whether the window is displayed in full screen mode or not.

Value

A boolean value with true meaning that the window is in full-screen mode and false meaning it isn't.

Notes

Switching between regular window and full screen will fire the "resize" event on the corresponding window.

Examples

if (window.fullScreen) {
  // it's fullscreen!
} else {
  // not fullscreen!
}

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`fullScreen`	No	No	1	No	No	No	4	No	No	No	No	No

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