用js判断是否为360浏览器的实现代码

<script>var check360browser={//如果是360 浏览器的话"ok":function (){//这里是判断360成功之后的代码alert('js -> 360');},"try360SE":function (callback) {  var ret = false,    img = new Image();  img.src = 'res://360se.exe/2/2025';  img.onload = function() {   ret = true;  }  setTimeout(function() {   if(ret==true){check360browser.ok();}else{ret=check360browser.try360SE_2();if(ret){check360browser.ok();}}}, 100); },"try360SE_2":function (){  var is360 = false;  if(window.navigator.userAgent.indexOf('Chrome')!=-1){ if(window.navigator.webkitPersistentStorage){  }else{ return true; } } }}check360browser.try360SE();</script>