asp.net ajax 1.0,hello world程序

asp.net ajax 1.0,hello world程序(2) <script type="text/Javascript">
    function SayHello()
    {
    var fs = HelloWorldService;
    fs.set_defaultSUCceededCallback(OnShow);
    fs.HelloWorld(document.getElementById("name").value);
    }
    function OnShow(result)
    {
    var s = document.getElementById("result");
    s.innerText = result;
    }
</script>

<4>HelloWorldService服务代码。为了能使服务被asp.net ajax客户端调用，必须给服务指明[ScriptService]属性（为了使用这一属性，需要引用Microsoft.Web.Script.Services命名空间）。
 1using System;
 2using System.Web.Services;
 3using System.Web.Services.Protocols;
 4using Microsoft.Web.Script.Services;
 5
 6[WebService(Namespace = "http://tempuri.org/")]
 7[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
 8[ScriptService]
 9public class HelloWorldService : System.Web.Services.WebService {
10
11    public HelloWorldService () {
12
13        //Uncomment the following line if using designed components
14        //InitializeComponent();
15    }
16
17    [WebMethod]
18    public string HelloWorld(string name) {
19        string hello = String.IsNullOrEmpty(name) ? "无名氏" : name;
20        hello += "你好,当前服务器时间是：";
21        hello += DateTime.Now.ToUniversalTime();
22        return hello;