Berikut adalah contoh script untuk timer dengan JavaScript

var month = ‘*’; // 1 through 12 or ‘*’ within the next month, ‘0’ for the current month
var day = ‘1’; // day of month or + day offset
var dow = 0; // day of week sun=1 sat=7 or 0 for whatever day it falls on
var hour = 14; // 0 through 23 for the hour of the day
var tz = 10; // offset in hours from UTC to your timezone
var lab = ‘cd’; // id of the entry on the page where the counter is to be inserted

function start() {displayCountdown(setCountdown(month,day,hour,tz),lab);}
loaded(lab,start);

// Countdown Javascript
// copyright 20th April 2005, 17th November 2006 by Stephen Chapman
// permission to use this Javascript on your web page is granted
// provided that all of the code in this script (including these
// comments) is used without any alteration
// you may change the start function if required
var pageLoaded = 0; window.onload = function() {pageLoaded = 1;}
function loaded(i,f) {if (document.getElementById && document.getElementById(i) != null) f(); else if (!pageLoaded) setTimeout(‘loaded(\”+i+’\’,’+f+’)’,100);
}
function setCountdown(month,day,hour,tz) {var m = month; if (month==’*’) m = 0; var c = setC(m,day,hour,tz); if (month == ‘*’ && c < 0) c = setC(‘*’,day,hour,tz); return c;} function setC(month,day,hour,tz) {var toDate = new Date();if (day.substr(0,1) == ‘+’) {var day1 = parseInt(day.substr(1));toDate.setDate(toDate.getDate()+day1);} else{toDate.setDate(day);}if (month == ‘*’)toDate.setMonth(toDate.getMonth() + 1);else if (month > 0) { if (month <= toDate.getMonth())toDate.setFullYear(toDate.getFullYear() + 1);toDate.setMonth(month-1);}
if (dow >0) toDate.setDate(toDate.getDate()+(dow-1-toDate.getDay())%7);
toDate.setHours(hour);toDate.setMinutes(0-(tz*60));toDate.setSeconds(0);var fromDate = new Date();fromDate.setMinutes(fromDate.getMinutes() + fromDate.getTimezoneOffset());var diffDate = new Date(0);diffDate.setMilliseconds(toDate – fromDate);return Math.floor(diffDate.valueOf()/1000);}
function displayCountdown(countdn,cd) {if (countdn < 0) document.getElementById(cd).innerHTML = “Sorry, you are too late.”; else {var secs = countdn % 60; if (secs < 10) secs = ‘0’+secs;var countdn1 = (countdn – secs) / 60;var mins = countdn1 % 60; if (mins < 10) mins = ‘0’+mins;countdn1 = (countdn1 – mins) / 60;var hours = countdn1 % 24;var days = (countdn1 – hours) / 24;document.getElementById(cd).innerHTML = days+’ days + ‘+hours+’ : ‘+mins+’ : ‘+secs;setTimeout(‘displayCountdown(‘+(countdn-1)+’,\”+cd+’\’);’,999);}}

Halaman HTMLnya sbb:

<html>

<head>

<script type=”text/javascript” src=”count.js”>
</script>

</head>

<body>

<span id=”cd”></span>

</body>
</html>