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<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
​
<h2>Fullscreen with JavaScript</h2>
<p>Click on the "Open Fullscreen" button to open this page in fullscreen mode. Close it by either clicking the "Esc" key on your keyboard, or with the "Close Fullscreen" button.</p>
​
<button onclick="openFullscreen();">Open Fullscreen</button>
<button onclick="closeFullscreen();">Close Fullscreen</button>
​
<script>
var elem = document.documentElement;
function openFullscreen() {
  if (elem.requestFullscreen) {
    elem.requestFullscreen();
  } else if (elem.mozRequestFullScreen) { /* Firefox */
    elem.mozRequestFullScreen();
  } else if (elem.webkitRequestFullscreen) { /* Chrome, Safari & Opera */
    elem.webkitRequestFullscreen();
  } else if (elem.msRequestFullscreen) { /* IE/Edge */
    elem.msRequestFullscreen();
  }
}
​
function closeFullscreen() {
  if (document.exitFullscreen) {
    document.exitFullscreen();
  } else if (document.mozCancelFullScreen) {
    document.mozCancelFullScreen();
  } else if (document.webkitExitFullscreen) {
    document.webkitExitFullscreen();
  } else if (document.msExitFullscreen) {
    document.msExitFullscreen();
  }
}
</script>
​
<p>Note: Internet Explorer 10 and earlier does not support fullscreen mode.</p>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_element_requestfullscreen_exit by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:02:18 GMT -->
</html>
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