Getting fullscreen mode to my browser using jquery

You can activate full screen mode using vanilla JavaScript without jQuery.

<!DOCTYPE html>

<html>

<head>
    <title>Full Screen Test</title>
</head>

<body id="body">
    <h1>test</h1>

    <script>
    var elem = document.getElementById("body");

    elem.onclick = function() {
        req = elem.requestFullScreen || elem.webkitRequestFullScreen || elem.mozRequestFullScreen;
        req.call(elem);
    }
    </script>
</body>

</html>

One thing that is important to note, you can only request full screen mode when a user performs an action (e.g. a click). You can’t request full screen mode without a user action^[1] (e.g. on page load).

Here is a cross browser function to toggle full screen mode (as obtained from the MDN):

function toggleFullScreen() {
  if (!document.fullscreenElement &&    // alternative standard method
      !document.mozFullScreenElement && !document.webkitFullscreenElement && !document.msFullscreenElement ) {  // current working methods
    if (document.documentElement.requestFullscreen) {
      document.documentElement.requestFullscreen();
    } else if (document.documentElement.msRequestFullscreen) {
      document.documentElement.msRequestFullscreen();
    } else if (document.documentElement.mozRequestFullScreen) {
      document.documentElement.mozRequestFullScreen();
    } else if (document.documentElement.webkitRequestFullscreen) {
      document.documentElement.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
    }
  } else {
    if (document.exitFullscreen) {
      document.exitFullscreen();
    } else if (document.msExitFullscreen) {
      document.msExitFullscreen();
    } else if (document.mozCancelFullScreen) {
      document.mozCancelFullScreen();
    } else if (document.webkitExitFullscreen) {
      document.webkitExitFullscreen();
    }
  }
}

For more information, check out the MDN page on full screen APIs.

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