js-addEventListener

Posted 2020-10-06 面包_girl

var EventUtil = {
     addHandler:function(elem,type,handler){
          if(elem.addEventListener){
             elem.addEventListener(type,handler,false);       
          }  else if(elem.attachEvent){
            elem.attachEvent(‘on‘+type,handler)
        }else{
            elem[‘on‘+type]=null;
        }
    }       
}