jQuery使用ajax访问后台数据并加载…

前台页面引用jQuery包

$(function(){  

  $("#userid").ready(function(){

    $.ajax({

     type:
"POST",

     url:
"pages/SubccnoToUserid.action?method=addUserid",

     data:
{  

               
subccno:$("#subccno").val()

                      
},  

                      
success: function(data){

               
   data1=eval_r(data);

                        
$("#userid").empty();

                        
var head="请选择客户级别";

                        
var ui="<option
value='"+''+"'>"+head+"</option>"

                        
$("#userid").append(ui);

                        
$.each(data.list,function(i,item){

                        
 var ui="<option
value='"+item+"'>"+item+"</option>"