Jquery ajax 取返回值 json的问题
前台代码
function ajax(Qt, PID) {
$.ajax({
url: "../Carts.asmx/CartsQuantity",
type: "POST",
dataType: 'json',
contentType: "application/json; charset=utf-8",
data: "{ Quantity:" + Qt + ", ProductID:" + PID + "}",
error: function () { alert("错误"); },
success: function (result) {
//var data = eval('(' + result + ')');
alert(result.d);//显示{"UserID":"4","Quantity":"11","ProductID":"5943"}
alert(result.Quantity);//显示undefined
}
});
}
用eval方法也不行，请问怎么去到KEY的值呢？
后台代码
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消注释以下行。
[System.Web.Script.Services.ScriptService]
public class Carts : System.Web.Services.WebService
{
[WebMethod]
public string CartsQuantity(int Quantity, int ProductID)
{
string UserID = BLL.MyCookies.Cookie.GetCookie("UserID").ToString();
StringBuilder sb = new StringBuilder();
sb.Append("{");
sb.Append(""UserID":"" + UserID + "",");
sb.Append(""Quantity":"" + Quantity + "",");
sb.Append(""ProductID":"" + ProductID + """);
sb.Append("}");
return sb.ToString();
}
}
//var data = eval('(' + result + ')');
result=eval('('+result.d+')')//生成json对象
alert(result.Quantity);//显示undefined
