Javascript倒计时页面跳转实例小结

<script type="text/javascript" language="JavaScript">
    var startTime = new Date();
    var endTime=startTime.getTime()+10*60*1000;
    var g_blinkswitch = 0;
    var g_blinktitle = document.title;
    function getRemainTime(){
        var nowTime = new Date();
        var nMS =endTime - nowTime.getTime();
        var nM=Math.floor(nMS/(1000*60)) % 60;
        var nS=Math.floor(nMS/1000) % 60;
        if(nM==0&&nS==0&&nMS<1000) //当倒计时结束
        {
            window.focus();
            setInterval("blinkNewMsg()", 1000);
            window.location.reload();
        }
        if(nS < 10) nS = "0" + nS;
        if(nMS >= 0){
            document.getElementById("remainTime").innerHTML= nM + "分" + nS + "秒";
            setTimeout("getRemainTime()",1000);
        }      
    }  
    function blinkNewMsg()
    {
        document.title = g_blinkswitch % 2==0 ? "【   】 - " + g_blinktitle : "【新消息】 - " +
        g_blinktitle;
        g_blinkswitch++;
    }  
 window. id="remainTime">10分00秒</strong>

倒计时跳转页面

<title>JS倒计时网页自动跳转代码</title> 
<script language="JavaScript" type="text/javascript">
 function delayURL(url) {
  var delay = document.getElementById("time").innerHTML;
  if(delay > 0) {
   delay--;
   document.getElementById("time").innerHTML = delay;
  } else {
   window.top.location. url;
   }
  setTimeout("delayURL('" + url + "')", 1000);
 }
</script>
<span id="time" style="background: #00BFFF">3</span>秒钟后自动跳转,如果不跳转,请点击下面的链接<a href="http://www.jb51.net">我的百度</a>
<script type="text/javascript">
delayURL("http://www.jb51.net");
</script>

防刷新的倒计时代码

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title> www.jb51.net</title>
</head>
<body>
<SCRIPT LANGUAGE="JavaScript">
<!--
var maxtime;
if(window.name==''){ 
maxtime = 1*60;
}else{
maxtime = window.name;
}
function CountDown(){
if(maxtime>=0){
minutes = Math.floor(maxtime/60);
seconds = Math.floor(maxtime%60);
msg = "距离考试结束还有"+minutes+"分"+seconds+"秒";
document.all["timer"].innerHTML = msg;
if(maxtime == 5*60) alert('注意,还有5分钟!');
--maxtime;
window.name = maxtime; 
}
else{
clearInterval(timer);
alert("考试时间到,结束!");
}
}
timer = setInterval("CountDown()",1000);
//-->
</SCRIPT>
<div id="timer" style="color:red"></div> 
</body>
</html>


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