Extjs循环Store里面的record

render:function(view, eOpts ){
		view.getStore().on({
			load:function(store, records, options){
				//方法一：普通法
				for(var i=0;i<store.getCount();i++){
					var recored = store.getAt(i);
					if(recored.get("checked")){
						var model = view.getSelectionModel();
						model.select(i,true,true);
					}
				}
				//方法二：Extjs自动方法
				Ext.each(records, function(rec) {
					if (rec.get('checked')) {
						
					}
				});
			}
		});
	}