JavaScript window.fullScreen Property
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JavaScript window.fullScreen Property
The window.fullScreen property indicates whether the window is displayed in full screen mode or not.
Note: This property is read-only.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body onkeyup="myFunction()">
<p>Works only on Firefox</p>
<p id="point"></p>
<script>
var x = document.getElementById("point");
function myFunction(){
if(window.fullScreen == undefined)
x.innerHTML = "window.fullScreen is not supported in your browser";
else if(window.fullScreen)
x.innerHTML = "Window is in Fullscreen";
else
x.innerHTML = "Window is not in Fullscreen";
}
myFunction();
</script>
</body>
</html>
Syntax
window.fullScreen
Return Values
| Value | Explanation |
|---|---|
| true | The window is in full screen mode. |
| false | The window is not in full screen mode. |
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