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最全面的JS倒计时代码

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第一种:精确到秒的javascript倒计时代码  

HTML代码:  

<form name="form1"> 
<div align="center" align="center"> 
<center>离2010年还有:<br> 
<input type="textarea" name="left" size="35" style="text-align: center"> 
</center> 
</div> 
</form> 
<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(); 
} 
// --> 
</script> 

第二种:某某运动会  

HTML代码:  

<!--倒计时Javascript begin--> 
<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 
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 
setTimeout("DigitalTime1()",1000) 

} 

if (day==0) //正在开幕 
{ 
//LiveClock1.innerHTML = "现在"+symbol+"天" 
LiveClock1.innerHTML = "<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 
setTimeout("DigitalTime1()",1000) 

} 

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

</body>


            
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