简单易用的js倒计时带分秒

 分类:js知识时间:2016-06-02点击:
   这是一个简单易用的js倒计时,带分秒可以设定要倒计时的那个时间,很实用简单,css可以自己
去修饰,做什么活动时,能用上js倒计时的这块知识,重点是js的date对象知识,希望这个js简易
倒计时对你有帮助哦!代码如下:
<!DOCTYPE HTML>
<
html>
<
head>
<
meta charset="UTF-8">
<
title>简单易用的js倒计时带分秒</title>
<
meta http-equiv="X-UA-Compatible" content="IE=10" />
<
meta name="renderer" content="webkit">
</
head>
<
body>
<
form name="form1">
<
div align="center" align="center">
<
center>离2029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 = 2029 - 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>
</
body>
</
html>

运行代码
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