求助啊用jquery调用一个后台方法 报500错误

Question

    $(document).ready(function () {
        $("#Fnumber").bind("propertychange", function () {
            var a = $("#Fnumber").val();
            alert(a);            $.ajax({
                type: "POST",
                url: "AddStorage.aspx/aa",
                data:"{a}",
                dataType: "text",
                contentType: "application/json; charset=utf-8",
                beforeSend: function (XMLHttpRequest) {
                    $('#show').text("正在查询");
                },
                success: function (msg) {
                    alert("cg");
                },
                error: function (xhr, msg, e) {
                    alert(xhr.status);
                    alert(xhr.readyState);
                    alert(msg);                 }
            });        });
    });为了调试后台代码改成了
   
        [System.Web.Services.WebMethod()]
        public static string aa(string str)
        {
            return str;
        }

Answer 1

500是编译失败，和你的jquery无关啊

Answer 2

AddStorage.aspx/aa这个页面里面有错误

Answer 3

是error方法XMLHttpRequest.status的 值 。

Answer 4

刚学 jquery不久 没哈经验啊 求助各位了

Answer 5

mvc?
 url: "AddStorage.aspx/aa",
  data:"{a}",看是不是data的问题
data:{
id:$("#a").val()
}是mvc 的话
  [HttpPost]
  public string aa(string str)
  {
   return str;
  }

Answer 6

普通 的 WEB应用没用MVC不熟  改过也不行 报错

Answer 7

       context.Response.ContentType = "application/json";
       int count = maxInfo.WaitDealCount();//这里调用业务方法查询
        context.Response.ContentType = "text/plain";
        context.Response.Write(count);