SImular F11 em JS

function fullScreen() {
	var element = document.documentElement;
	
	if (element.requestFullscreen) {
		element.requestFullscreen();
	} else if (element.mozRequestFullScreen) {
		element.mozRequestFullScreen();
	} else if (element.webkitRequestFullscreen) {
		element.webkitRequestFullscreen();
	} else if (element.msRequestFullscreen) {
		element.msRequestFullscreen();
	}
}

document.onclick = function (event) { 
  if (document.fullscreenElement) { 
    document.exitFullscreen()
      .then(() => console.log("Document Exited form Full screen mode"))
      .catch((err) => console.error(err))
  } else { 
    document.documentElement.requestFullscreen() 
  } 
}