1回答

• 

  Comsmelo

  2016-09-07 11:05:38

  写个判断

  
  

  function addEvent(ele,type,hander){
             // 执行代码
             ele=ele||window.event;
             if(ele.addEventListener)
             {
                 ele.addEventListener(type, hander, false);//DOM2级
             }
             else
             {
                 ele["on"+type]=hander;//DOM0级
             }
        }

  
  

  0 0