js 倒计时代码大全

<SCRIPT LANGUAGE="JavaScript"> 
<!-- 
var maxtime = 60*60 //一个小时，按秒计算，自己调整! 
function CountDown(){ 
 if(maxtime>=0){ 
 minutes = Math.floor(maxtime/60); 
 seconds = Math.floor(maxtime%60); 
 msg = "距离结束还有"+minutes+"分"+seconds+"秒"; 
 document.all["timer"].innerHTML=msg; 
 if(maxtime == 5*60) alert('注意，还有5分钟!'); 
 --maxtime; 
 } 
 else{ 
 clearInterval(timer); 
 alert("时间到，结束!"); 
 } 
} 
timer = setInterval("CountDown()",1000); 
//--> 
</SCRIPT> 
<div id="timer" style="color:red" mce_style="color:red"></div>

<Script Language="JavaScript">  
<!-- Begin  
　　var timedate= new Date("January 14,2006");  
　　var times="研究生考试";  
　　var now = new Date();  
　　var date = timedate.getTime() - now.getTime();  
　　var time = Math.floor(date / (1000 * 60 * 60 * 24));  
　　if (time >= 0) ; 
document.write("<li><font color=#DEDBDE>现在离2006年"+times+"还有: <font color=#ffffff><b>"+time +"</b></font> 天</font></li>"); 
// End --> 
</Script>

<mce:script language="JavaScript" type="text/javascript"><!-- 
function djs(){ 
var urodz= new Date("11/12/2008");　 
var now = new Date(); 
var num 
var ile = urodz.getTime() - now.getTime();　　 
var dni = Math.floor(ile / (1000 * 60 * 60 * 24));　　 
if (dni >1)　　 
num=dni+1 
else if (dni == 1)　num=2　 
else if (dni == 0)　num=1 
else num=0　 
document.write(num)　　 
} 
// --></mce:script> 
距某某开幕式还有 [<mce:script language="JavaScript" type="text/javascript"><!-- 
djs() 
// --></mce:script>] 天 

<span id="clock">00:01:11:00</span> 
<input id="startB" type="button" value="start countdown!" onclick="run()"> 
<input id="endB" type="button" value="stop countdown!" onclick="stop()"> 
<br> 
<input id="diff" type="text"> 
<input id="next" type="text"> 
<mce:script language="Javascript"><!-- 
var normalelapse = 100; 
var nextelapse = normalelapse; 
var counter;  
var startTime; 
var start = clock.innerText;  
var finish = "00:00:00:00"; 
var timer = null; 
// 开始运行 
function run() { 
  startB.disabled = true; 
  endB.disabled = false; 
  counter = 0; 
  // 初始化开始时间 
  startTime = new Date().valueOf(); 
  // nextelapse是定时时间, 初始时为100毫秒 
  // 注意setInterval函数: 时间逝去nextelapse(毫秒)后, onTimer才开始执行 
  timer = window.setInterval("onTimer()", nextelapse);  
} 
// 停止运行 
function stop() { 
  startB.disabled = false; 
  endB.disabled = true; 
  window.clearTimeout(timer); 
} 
window.onload = function() { 
  endB.disabled = true; 
} 
// 倒计时函数 
function onTimer() 
{ 
if (start == finish) 
{ 
  window.clearInterval(timer); 
  alert("time is up!"); 
  return; 
} 
var hms = new String(start).split(":"); 
var ms = new Number(hms[3]); 
var s = new Number(hms[2]); 
var m = new Number(hms[1]); 
var h = new Number(hms[0]); 

ms -= 10; 
if (ms < 0) 
{ 
  ms = 90; 
  s -= 1; 
  if (s < 0) 
  { 
s = 59; 
m -= 1; 
  } 

  if (m < 0) 
  { 
m = 59; 
h -= 1; 
  } 
} 
var ms = ms < 10 ? ("0" + ms) : ms; 
var ss = s < 10 ? ("0" + s) : s; 
var sm = m < 10 ? ("0" + m) : m; 
var sh = h < 10 ? ("0" + h) : h; 
start = sh + ":" + sm + ":" + ss + ":" + ms; 
clock.innerText = start; 
// 清除上一次的定时器 
window.clearInterval(timer); 
// 自校验系统时间得到时间差, 并由此得到下次所启动的新定时器的时间nextelapse 
counter++;  
var counterSecs = counter * 100; 
var elapseSecs = new Date().valueOf() - startTime; 
var diffSecs = counterSecs - elapseSecs; 
nextelapse = normalelapse + diffSecs; 
diff.value = counterSecs + "-" + elapseSecs + "=" + diffSecs; 
next.value = "nextelapse = " + nextelapse; 
if (nextelapse < 0) nextelapse = 0; 
// 启动新的定时器 
timer = window.setInterval("onTimer()", nextelapse);  
} 
// --></mce:script>