JS倒计时代码整理

第一种:精确到秒的javascript倒计时代码

HTML代码:

<form name="form1">
<div align="center" align="middle">
<center>离2012年还有:<br>
<input type="textarea" name="left" size="35" style="text-align: center" mce_style="text-align: center">
</center>
</div>
</form>
<mce:script LANGUAGE="javascript"><!--
startclock()
var timerID = null;
var timerRunning = false;
function showtime() {
Today = new Date();
var NowHour = Today.getHours();
var NowMinute = Today.getMinutes();
var NowMonth = Today.getMonth();
var NowDate = Today.getDate();
var NowYear = Today.getYear();
var NowSecond = Today.getSeconds();
if (NowYear <2000)
NowYear=1900+NowYear;
Today = null;
Hourleft = 23 - NowHour
Minuteleft = 59 - NowMinute
Secondleft = 59 - NowSecond
Yearleft = 2009 - NowYear
Monthleft = 12 - NowMonth - 1
Dateleft = 31 - NowDate
if (Secondleft<0)
{
Secondleft=60+Secondleft;
Minuteleft=Minuteleft-1;
}
if (Minuteleft<0)
{ 
Minuteleft=60+Minuteleft;
Hourleft=Hourleft-1;
}
if (Hourleft<0)
{
Hourleft=24+Hourleft;
Dateleft=Dateleft-1;
}
if (Dateleft<0)
{
Dateleft=31+Dateleft;
Monthleft=Monthleft-1;
}
if (Monthleft<0)
{
Monthleft=12+Monthleft;
Yearleft=Yearleft-1;
}
Temp=Yearleft+'年, '+Monthleft+'月, '+Dateleft+'天, '+Hourleft+'小时, '+Minuteleft+'分, '+Secondleft+'秒'
document.form1.left.value=Temp;
timerID = setTimeout("showtime()",1000);
timerRunning = true;
}
var timerID = null;
var timerRunning = false;
function stopclock () {
if(timerRunning)
clearTimeout(timerID);
timerRunning = false;
}
function startclock () {
stopclock();
showtime();
}
// --></mce:script>

第二种:某某运动会
HTML代码:

<!--倒计时Javascript begin-->

 <mce:script language="JavaScript"><!--
 
 function DigitalTime1()
 { 
 var deadline= new Date("08/13/2007") //开幕倒计时
 var symbol="8月13日"
 var now = new Date()
 var diff = -480 - now.getTimezoneOffset() //是北京时间和当地时间的时间差
 var leave = (deadline.getTime() - now.getTime()) + diff*60000
 var day = Math.floor(leave / (1000 * 60 * 60 * 24))
 var hour = Math.floor(leave / (1000*3600)) - (day * 24)
 var minute = Math.floor(leave / (1000*60)) - (day * 24 *60) - (hour * 60)
 var second = Math.floor(leave / (1000)) - (day * 24 *60*60) - (hour * 60 * 60) - (minute*60)

 var deadline_2= new Date("08/13/2004") //开幕后计时
 var symbol_2="8月13日"
 var now_2 = new Date()
 var diff_2 = -480 - now.getTimezoneOffset() //是北京时间和当地时间的时间差
 var leave_2 = (now_2.getTime() - deadline_2.getTime()) + diff_2*60000
 var day_2 = Math.floor(leave_2 / (1000 * 60 * 60 * 24))
 var hour_2 = Math.floor(leave_2 / (1000*3600)) - (day_2 * 24)
 var minute_2 = Math.floor(leave_2 / (1000*60)) - (day_2 * 24 *60) - (hour_2 * 60)
 var second_2 = Math.floor(leave_2 / (1000)) - (day_2 * 24 *60*60) - (hour_2 * 60 * 60) - (minute_2*60)
 
 day=day+1;
 day_2=day_2+1;

 if (day>0) //还未开幕
 {
 //LiveClock1.innerHTML = "现在"+symbol+"天"
 LiveClock1.innerHTML = "<font class=fon1>距离"+symbol+"开幕还有<font class=fon2>"+day+"</font>天</font>"
 setTimeout("DigitalTime1()",1000)
 }

 if (day<0) //已经开幕
 {
 //LiveClock1.innerHTML = "现在离"+symbol+"还有"+day+"天"+hour+"小时"+minute+"分"+second +"秒"
 LiveClock1.innerHTML = "<font class=fon1>"+symbol+"开幕已有<font class=fon2>"+day_2+"</font>天</font>"
 setTimeout("DigitalTime1()",1000)

 }

 if (day==0) //正在开幕
 {
 //LiveClock1.innerHTML = "现在"+symbol+"天"
 LiveClock1.innerHTML = "<font class=fon1>某某运动会今天开幕</font>"
 setTimeout("DigitalTime1()",1000)
 }
 
 if (day<0 & day_2>19) //某某运动会结束
 {
 //LiveClock1.innerHTML = "现在离"+symbol+"还有"+day+"天"+hour+"小时"+minute+"分"+second +"秒"
 LiveClock1.innerHTML = "<font class=fon1>某某运动会已全部结束</font>"
 setTimeout("DigitalTime1()",1000)

 }

 }
// --></mce:script>
 <!--倒计时Javascript end-->
<body onload=DigitalTime1()>
<div id= LiveClock1></div>
</body>

第三种:小时倒计时
HTML代码:

<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.getElementById('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>

第四种:最简倒计时
代码:

<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>

第五种:最简倒计时二

HTML代码:

<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

第六种:Javascript倒计时器 – 采用系统时间自校验

这次利用系统时间自校验倒计时, 无需手工调校使得倒计时更为精确, 代码及详细注释如下:

<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"><!--
/* This notice must be untouched at all times.

countdown.js    v. 1.0
The latest version is available at

http://blog.csdn.net/yjgx007

Copyright (c) 2004 Xinyi.Chen. All rights reserved.
Created 7/30/2004 by Xinyi.Chen. 
Web: http://blog.csdn.net/yjgx007
E-Mail: chenxinyi1978@hotmail.com
Last modified: 7/30/2004

This program is free software;
you can redistribute it and/or modify it under the terms of the
GNU General Public License as published by the Free Software Foundation;

See the GNU General Public License
at http://www.gnu.org/copyleft/gpl.html for more details.
*/
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>

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