How to exit F11 browser in full screen using javascript

Question

Is there a way to exit the full screen mode that was created with F11 ?

 FullScreen: { _callback: null, enabled : function () { return document.fullscreenEnabled || document.webkitFullscreenEnabled || document.mozFullScreenEnabled || document.msFullscreenEnabled; }, request: function (i) { if (i.requestFullscreen) { i.requestFullscreen(); } else if (i.webkitRequestFullscreen) { i.webkitRequestFullscreen(); } else if (i.mozRequestFullScreen) { i.mozRequestFullScreen(); } else if (i.msRequestFullscreen) { i.msRequestFullscreen(); } }, element: function () { return document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement; }, exit: function () { if (document.exitFullscreen) { document.exitFullscreen(); } else if (document.webkitExitFullscreen) { document.webkitExitFullscreen(); } else if (document.mozCancelFullScreen) { document.mozCancelFullScreen(); } else if (document.msExitFullscreen) { document.msExitFullscreen(); } }, onChange: function (fn) { if (document.fullscreenEnabled) document.addEventListener('fullscreenchange', fn); else if (document.webkitFullscreenEnabled) document.addEventListener('webkitfullscreenchange', fn); else if (document.mozFullScreenEnabled) document.addEventListener('mozfullscreenchange', fn); else if (document.msFullscreenEnabled) document.addEventListener('MSFullscreenChange', fn); }, removeOnChange: function (fn) { if (document.fullscreenEnabled) document.removeEventListener('fullscreenchange', fn); else if (document.webkitFullscreenEnabled) document.removeEventListener('webkitfullscreenchange', fn); else if (document.mozFullScreenEnabled) document.removeEventListener('mozfullscreenchange', fn); else if (document.msFullscreenEnabled) document.removeEventListener('MSFullscreenChange', fn); }, }, 

when in full screen using F11 :
Fullscreen.element() undefined and Fullscreen.exit() has no effect.

I tried in the latest version of Firefox and chrome.

Please, I will be a tank if you limit your comment / response to related and constructive answers. Your personal opinion is not required or requested.

Please do not post links to JS Fullscreen solutions, I can already do this, see the code.