jquery validate结合ajax运用

<script type="text/javascript" src="js/jquery-1.7.2.js"></script>
<script type="text/javascript" src="js/jquery.validate.min.js"></script>

$("#login-form").validate({
        rules: {
           oldpassword:{
                required: true,
                remote:{
                    url:"usercontrol/ajax_pass.php",
                    type:"post",
                    cache:false,
                    dataType:"json",
                    data:{
                         oldpass:function(){return $("#oldpassword").val();},
                         name:function(){return $("#uname").val();}
                     }
                }

                },
         newpassword:{
               required: true,
               minlength:6
             },
         renewpassword:{
             required: true,
             equalTo:"#newpassword"
             }
    },
        messages: {
           oldpassword: {
            required:'请输入原密码',
            remote:"原密码不正确"
            },
          newpassword:{
               required: "请输入新密码",
               minlength:"新密码至少6个字符"
             },
         renewpassword:{
             required: "请确认新密码",
             equalTo:"两次新密码不一样"
             }
},


    });

自己写的一个验证当前用户密码JS 留着备用~~