Ext.store加载完成后回调方法

store.load({  
      callback : function(r, options, success) {  
          if (success == false) {  
               Ext.Msg.alert("ERROR",   "There was an error parsing the Country Combo."); 
          } 
          else{ 
            alert(store.getTotalCount()); 
          }  
      }  
  });

找了半天终于找到了，谢谢[url] http://www.iteye.com/topic/147770[/url]  最后一位回复的大大。