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  • 通过Ajax实现的一个时钟_now.aspx是服务器反应的当前时间。

    Ajax页面:

    <!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("您的浏览器不支持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();" >
    当前的系统时间:
    <input type="text" id="now" >
    </body>
    </html>

    now.aspx页面:

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

    now.aspx.cs页面:

    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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  • 原文地址:https://www.cnblogs.com/binaryworms/p/1689152.html
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