后台：
protected void Page_Load(object sender, EventArgs e) { int timediff=DateDiff(DateTime.Parse("2011/3/5 18:00:00"),System.DateTime.Now); ClientScript.RegisterStartupScript(this.GetType(), "time", "<script>var duration=" + timediff + ";var endTime = new Date().getTime() + duration + 100;</script>"); } private int DateDiff(DateTime DateTime1, DateTime DateTime2) { int dateDiff = 0; TimeSpan ts1 = new TimeSpan(DateTime1.Ticks); TimeSpan ts2 = new TimeSpan(DateTime2.Ticks); TimeSpan ts = ts1.Subtract(ts2).Duration(); dateDiff = (ts.Days * 24 * 60 * 60 + ts.Hours * 60 * 60 + ts.Minutes * 60 + ts.Seconds)*1000;//获取毫秒数 return dateDiff; }
前台：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" /> <script type="text/javascript"> <!-- function interval() { var n=(endTime-new Date().getTime())/1000; if(n<0) return; document.getElementById("timeout").innerHTML = n.toFixed(3); setTimeout(interval, 10); } window.οnlοad=function() { interval(); } //--> </script> </head> <body >
<form id="form1" runat="server">
<div id="timeout"s></div> </form> </div> </body> </html>
