通過Ajax實現的一個時鐘_now.aspx是伺服器反應的目前時間。

來源:互聯網
上載者:User

Ajax頁面:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="<A href="http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml">
<head>
    <title>Untitled Page</title>
    <****** type="text/javascript">
        function doing()
        {
            var xmlHttp;
            try
            {
                xmlHttp = new XMLHttpRequest();
            }
            catch(e)
            {
                try
                {
                    xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
                }
                catch(e)
                {
                    try
                    {
                        xmlHttp = new ActiveXObject ("Microsoft.XMLHTTP");
                    }
                    catch(e)
                    {
                        alert("您的瀏覽器不支援Ajax!");
                        return false;
                    }
                }
            }
            xmlHttp .onreadystatechange = function ()
            {
                if (xmlHttp .readyState == 4)
                {
                    var strResult = xmlHttp .responseText;
                    document .getElementById("now").value = strResult;
                }
            }
            xmlHttp .open("GET","now.aspx",true);
            xmlHttp .send(null);
        }
        function gettingTime()
        {
            setInterval(doing,1000);
        }
    </script>
</head>
<body onload ="gettingTime();" >
當前的系統時間:
<input type="text" id="now" >
</body>
</html>

now.aspx頁面:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="now.aspx.cs" Inherits="now" %>

now.aspx.cs頁面:

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class now : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Response.Expires = -1;
        Response.Write(DateTime .Now.ToString());
    }
}

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