这里是一个JavaScript中显示倒计时的方法,从10一秒一秒地往下减直到计时结束(即0),代码如下:

第一种:精确到秒的javascript倒计时代码  

本文实例总结了JS常用倒计时代码。分享给大家供大家参考,具体如下:

runCount(10);
function runCount(t){
  if(t>0){
    document.getElementById(‘shownum').innerHTML = t;
    t–;
    setTimeout(function(){runCount(t);},1000);
  }else{
    document.getElementById(‘shownum').innerHTML = ‘倒计时结束!';
  }
}

HTML代码:  

第一种:精确到秒的javascript倒计时代码

  运行该js代码前,需要先添加一个id为shownum的div。

<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> 
<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>

js实现动态倒计时功能 * a是从后台接收到的时间戳,需转换成毫秒单位

第二种:某某运动会  

第二种:某某运动会

<div>
  距明年还有:
  天
  小时
  分
  秒
</div>
<script type="text/javascript">
/**
*
*  copyright WE 2012.7
*  js实现动态倒计时功能
*  a是从后台接收到的时间戳,需转换成毫秒单位
*
*/
  var a=12345678;     //以毫秒为单位
  function fomtime()
  {
    a=a-1000;
    var b=new Date();
    b.setTime(0);
    var c=new Date();
    c.setTime(a);
    var day1=b.getDate();    //为方便调用,把天数、小时等单独定义
    var hours1=b.getHours();
    var minu1=b.getMinutes();
    var seco1=b.getSeconds();
    var day2=c.getDate();
    var hours2=c.getHours();
    var minu2=c.getMinutes();
    var seco2=c.getSeconds();
    var day=day2-day1;
    var hours=hours2-hours1;
    var minu=minu2-minu1;
    var seco=seco2-seco1;
    document.getElementById('daya').innerHTML=day;
    document.getElementById('hoursa').innerHTML=hours;
    document.getElementById('minua').innerHTML=minu;
    document.getElementById('secoa').innerHTML=seco;
    setTimeout("fomtime()",1000);
  }
  fomtime();
</script>

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>

按天倒计时

<!--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>

第三种:小时倒计时

HTML代码1:

第三种:小时倒计时  

<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"></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> 

HTML代码:  

第四种:最简倒计时

Author

发表评论

电子邮件地址不会被公开。 必填项已用*标注