JavaScript 模拟 F11 实现页面全屏显示

HTML 结构与脚本逻辑

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>测试全屏</title>
</head>
<body>
 <button id='btn'>全屏按钮</button> 
<div id="content" style="background:yellow;width:500px;height:500px;">
<div id="quite" class="btn">退出全屏</div> 
</div>
 <script type="text/javascript">

var btn = document.getElementById('btn'); 
  var content = document.getElementById('content'); 
  btn.onclick = function(){ 
   console.log(content);
fullScreen(content); 
  }
  var quite = document.getElementById('quite'); 
  quite.onclick = function(){
   exitFullScreen(); 
  }

function fullScreen(el) {
var rfs = el.requestFullScreen || el.webkitRequestFullScreen || el.mozRequestFullScreen || el.msRequestFullScreen, 
wscript; 
 
if(typeof rfs != "undefined" && rfs) {
rfs.call(el); 
return; 
} 
 
if(typeof window.ActiveXObject != "undefined") {
wscript = new ActiveXObject("WScript.Shell"); 
if(wscript) { 
wscript.SendKeys("{F11}"); 
}
}
}
 
function exitFullScreen(el) {
var el= document, 
cfs = el.cancelFullScreen || el.webkitCancelFullScreen || el.mozCancelFullScreen || el.exitFullScreen, 
wscript; 
 
if (typeof cfs != "undefined" && cfs) {
 cfs.call(el); 
 return; 
}
 
if (typeof window.ActiveXObject != "undefined") {
wscript = new ActiveXObject("WScript.Shell"); 
if (wscript != null) { 
wscript.SendKeys("{F11}"); 
}
}
}
 </script>
</body>
</html>