導語:如何使用JavaScript實現倒計時呢?下面是小編給大家提供的`JavaScript常用倒計時實現程式碼,大家可以參考閱讀,更多詳情請關注應屆畢業生考試網。
第一種:精確到秒的javascript倒計時程式碼
<form name="form1">
<p align="center" align="center">
<center>離2010年還有:<br>
<input type="textarea" name="left" size="35" style="text-align: center">
</center>
</p>
</form>
<script LANGUAGE="javascript">
startclock()
var timerID = null;
var timerRunning = false;
function showtime() {
Today = new Date();
var NowHour = ours();
var NowMinute = inutes();
var NowMonth = onth();
var NowDate = ate();
var NowYear = ear();
var NowSecond = econds();
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+'小時, '+Minuteleft+'分, '+Secondleft+'秒'
e=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>
第二種:某某運動會
<!--倒計時Javascript begin-->
<script language="JavaScript">
<!--
function DigitalTime1()
{
var deadline= new Date("08/13/2007") //開幕倒計時
var symbol="8月13日"
var now = new Date()
var diff = -480 - imezoneOffset() //是北京時間和當地時間的時間差
var leave = (ime() - ime()) + diff*60000
var day = r(leave / (1000 * 60 * 60 * 24))
var hour = r(leave / (1000*3600)) - (day * 24)
var minute = r(leave / (1000*60)) - (day * 24 *60) - (hour * 60)
var second = r(leave / (1000)) - (day * 24 *60*60) - (hour * 60 * 60) - (minute*60)
var deadline_2= new Date("08/13/2004") //開幕後計時
var symbol_2="8月13日"
var now_2 = new Date()
var diff_2 = -480 - imezoneOffset() //是北京時間和當地時間的時間差
var leave_2 = (now_ime() - deadline_ime()) + diff_2*60000
var day_2 = r(leave_2 / (1000 * 60 * 60 * 24))
var hour_2 = r(leave_2 / (1000*3600)) - (day_2 * 24)
var minute_2 = r(leave_2 / (1000*60)) - (day_2 * 24 *60) - (hour_2 * 60)
var second_2 = r(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) //還未開幕
{
//rHTML = "現在"+symbol+"天"
rHTML = "<font
setTimeout("DigitalTime1()",1000)
}
if (day<0) //已經開幕
{
//rHTML = "現在離"+symbol+"還有"+day+"天"+hour+"小時"+minute+"分"+second +"秒"
rHTML = "<font
setTimeout("DigitalTime1()",1000)
}
if (day==0) //正在開幕
{