ajax-json-function

   $.ajax({
        url: "../../UserInfoServlet",type: "post",data: "checkByName=" + name + "&currentPage=" + index + "&PageSize=" + size+"&doaction=userListTest",dataType: "json",beforeSend: function(){
        	//开始显示等待的图片
        	$("#gifDiv").html("<img src='../../images/autoScan18.gif'/>正在加载数据，请稍候......");
        },error:function(){
        	alert('数据加载失败！');
        	dealFail();
        },success: function (data) {
        	dealSuccess(data);
        },complete: function(){ 
        	//结束显示等待的图片
        	$("#gifDiv").html("");
        }
    });