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本文实例总结了常见的JS倒计时代码。分享给大家供大家参考。具体汇总如下:
第一种:精确到秒的javascript倒计时代码
HTML代码:
离2010年还有:
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();
}
// –>
第二种:某某运动会
HTML代码:
第三种:小时倒计时
HTML代码:
第四种:最简倒计时
HTML代码:
第五种:最简倒计时二
HTML代码:
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)
}
距某某开幕式还有 [] 天
第六个: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:
00:01:11:00
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);
}
希望本文所述对大家基于javascript的web程序设计有所帮助。
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