$(document).ready(function () {            $("#btnLogin").click(function () {                $.ajax({                    url: '/Home/Login',                    data: '{ "account":"' + $("#account").val() + '", "psword": "' + $("#psword").val() + '" }',                    type: "post",                    contentType: "application/json;charset=utf-8",                    dataType: "json"                    ,                    success: function (data) {                        if (data != "")                            alert(data);                        else                            location.href = "/Home/Index"                                      }                });            });        });

[HttpPost]         public ActionResult Login(string account, string psword)         {             JsonResult result;             if ("" == account && "" == psword)                 result = this.Json("");                         else             {                 result=this.Json("用户或密码不正确");                            }                       return result;         }