JS countdown code summary

  • 2020-03-30 04:23:00
  • OfStack

This example summarizes the common JS countdown code. Share with you for your reference. The detailed summary is as follows:

The first: code   javascript countdown to the second;

HTML code:  

<form name="form1">  
<div align="center" align="center"> 
<center> From the 2010 Years and :<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+' years , '+Monthleft+' month , '+Dateleft+' day , '+Hourleft+' hours , '+Minuteleft+' points , '+Secondleft+' seconds '
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>

The second: XXX sports meet & cake;

HTML code:  

<!-- The countdown Javascript begin-->  
<script language="JavaScript"> 
<!--  
function DigitalTime1() 
{  
var deadline= new Date("08/13/2007") //Countdown to the opening ceremony; < br / > var symbol="8 month 13 day "
var now = new Date() 
var diff = -480 - now.getTimezoneOffset() //It is the time difference between Beijing time and local time. < br / > 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") //Timing & NBSP; after the opening ceremony; < br / > var symbol_2="8 month 13 day "
var now_2 = new Date() 
var diff_2 = -480 - now.getTimezoneOffset() //It is the time difference between Beijing time and local time. < br / > 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) //The opening is yet to take place & NBSP; < br / > { 
//LiveClock1. InnerHTML = "now "+symbol+" day "& NBSP; < br / > LiveClock1.innerHTML = "<font
setTimeout("DigitalTime1()",1000) 

if (day<0) //Already opened & NBSP; < br / > { 
//LiveClock1. InnerHTML = "now to "+symbol+ hour+ minute+ minute+ second +second "& NBSP; < br / > LiveClock1.innerHTML = "<font
setTimeout("DigitalTime1()",1000) 

if (day==0) //Opening ceremony & NBSP; < br / > { 
//LiveClock1. InnerHTML = "now "+symbol+" day "& NBSP; < br / > LiveClock1.innerHTML = "<font
setTimeout("DigitalTime1()",1000) 

  
if (day<0 & day_2>19) //The sports meet is over & NBSP; < br / > { 
//LiveClock1. InnerHTML = "now to "+symbol+ hour+ minute+ minute+ second +second "& NBSP; < br / > LiveClock1.innerHTML = "<font
setTimeout("DigitalTime1()",1000) 


// --> 
</script> 
<!-- The countdown Javascript end--> 
<body onload=DigitalTime1()> 
<div id= LiveClock1></div> 
</body>

 
Third: the hour countdown  

HTML code:  

<SCRIPT LANGUAGE="JavaScript">  
<!-- 
var maxtime = 60*60 //One hour, by the second, adjust yourself!   < br / > function CountDown(){ 
if(maxtime>=0){ 
minutes = Math.floor(maxtime/60); 
seconds = Math.floor(maxtime`); 
msg = " And then there's the end "+minutes+" points "+seconds+" seconds "; 
document.all["timer"].innerHTML=msg; 
if(maxtime == 5*60) alert(' Notice, there's also 5 minutes !'); 
--maxtime; 

else{ 
clearInterval(timer); 
alert(" Time is up. It's over !"); 


timer = setInterval("CountDown()",1000); 
//--> 
</SCRIPT> 
<div id="timer" style="color:red"></div>

Fourth: the simplest countdown  

HTML code:  

<Script Language="JavaScript">   
<!-- Begin  
  var timedate= new Date("January 14,2006");  
  var times=" Postgraduate examination ";  
  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> Now from 2006 years "+times+" There are : <font color=#ffffff><b>"+time +"</b></font> day </font></li>"); 
// End --> 
</Script>

Fifth: the simplest countdown two  

HTML code:  

<script language="JavaScript" type="text/javascript">  
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)   

</script> 
There's more to the opening ceremony [<script language="JavaScript" type="text/javascript">djs()</script>] day

Sixth: Javascript countdown timer - using system time self - check

This time, the system time self-check countdown, no manual adjustment to make the countdown more accurate, the code and detailed comments are as follows:

<span id="clock">00:01:11:00</span>  
<input id="startB" type="button" value="start countdown!" onclick="run()"> 
<input id="endB" type="button" value="stop countdown!" onclick="stop()"> 
<br> 
<input id="diff" type="text"> 
<input id="next" type="text"> 
<script language="Javascript"> 
var normalelapse = 100; 
var nextelapse = normalelapse; 
var counter;  
var startTime; 
var start = clock.innerText;  
var finish = "00:00:00:00"; 
var timer = null; 
//Start running & NBSP; < br / > function run() { 
startB.disabled = true; 
endB.disabled = false; 
counter = 0; 
//Initialization start time & NBSP; < br / > startTime = new Date().valueOf(); 
//Nextelapse is a timed time, started with 100 milliseconds. < br / > //Notice the setInterval function: the onTimer is executed after nextelapse(milliseconds); < br / > timer = window.setInterval("onTimer()", nextelapse);  

//Stop running & NBSP; < br / > function stop() { 
startB.disabled = false; 
endB.disabled = true; 
window.clearTimeout(timer); 

window.onload = function() { 
endB.disabled = true; 

//Countdown function & NBSP; < br / > 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; 
//Clean the last timer & NBSP; < br / > window.clearInterval(timer); 
//The self-checkout system time gets the time difference, and from there gets the nextelapse  time of the new timer to start. < br / > 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; 
//Start a new timer & NBSP; < br / > timer = window.setInterval("onTimer()", nextelapse);  

</script>


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