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Window: fullScreen property

files/en-us/web/api/window/fullscreen/index.md

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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

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

Browser compatibility

{{Compat}}