The Window interface has a fullscreen property which tells whether the window is displayed in fullscreen mode or not.
Syntax:
BoolVal = windowReference.fullScreen;
Return value:
-
Boolean
- True: If windows is in fullscreen mode.
- False: If windows are not in fullscreen mode.
Example :
<!DOCTYPE html> <html>
<head>
<title>
Window fullscreen property
</title>
</head>
<body>
<center>
<h1 style="color:green;">
GeeksForGeeks
</h1>
<h2>Window fullscreen property</h2>
<button onclick="GFGfun();">press</button>
<script>
function GFGfun() {
alert(window.fullScreen);
}
</script>
</center>
</body>
</html>
|
Output:
Window not in fullscreen:
Window in fullscreen:
Browser support:
- Firefox 3+
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