个回答

• 李晓健

  2015-11-07 13:55:00

  var addEvent=(function(){
      if(document.addEventListener){
          return function(el,type,fn){
              if(el.length){
                  for(var i=0;i<el.length;i++){
                      addEvent(el[i],type,fn);
                  }
              }else{
                  el.addEventListener(type,fn,false);
              }
          };
      }else{
          return function(el,type,fn){
              if(el.length){
                  for(var i=0;i<el.length;i++){
                      addEvent(el[i],type,fn);
                  }
              }else{
                  el.attachEvent('on'+type,function(){
                      return fn.call(el,window.event);
                  });
              }
          };
      }
  })();

  判断处理下就行了

  2