function startTimer(duration, display) {
var timer = duration, minutes, seconds;
setInterval(function () {
minutes = parseInt(timer / 60, 10);
seconds = parseInt(timer % 60, 10);
minutes = minutes < 10 ? "0" + minutes : minutes;
seconds = seconds < 10 ? "0" + seconds : seconds;
display.textContent = minutes + ":" + seconds;
if (--timer < 0) {
timer = duration;
}
}, 1000);
}
window.onload = function () {
var fiveMinutes = 60 * 5,
display = document.querySelector('#time');
startTimer(fiveMinutes, display);
};var hms = "02:30:00";
var a = hms.split(':'); // split it at the colons
// minutes are worth 60 seconds. Hours are worth 60 minutes.
var seconds = (+a[0]) * 60 * 60 + (+a[1]) * 60 + (+a[2]);
if(seconds > 0)
{
function secondPassed() {
var minutes = Math.round((seconds - 30)/60),
remainingSeconds = seconds % 60;
var hour =Math.floor((minutes)/60);
minutes = minutes%60;
if (remainingSeconds < 10) {
remainingSeconds = "0" + remainingSeconds;
}
hour = ("0" + hour).slice(-2);
minutes = ("0" + minutes).slice(-2);
remainingSeconds= ("0" + remainingSeconds).slice(-2);
document.getElementById('countdown').innerHTML = hour +":" +minutes + ":" + remainingSeconds;
if (seconds == 0) {
clearInterval(countdownTimer);
//form1 is your form name
document.form_quiz.submit();
} else {
seconds--;
}
}
var countdownTimer = setInterval('secondPassed()', 1000);
}<html>
<body>
<div id="hms">02:00:00</div>
</body>
<script>
var startTime;
function getCookie(name) {
var value = "; " + document.cookie;
var parts = value.split("; " + name + "=");
if (parts.length == 2) return parts.pop().split(";").shift();
} // credits kirlich @http://stackoverflow.com/questions/10730362/get-cookie-by-name
function count() {
if(typeof getCookie('remaining')!= 'undefined')
{
startTime = getCookie('remaining');
}
else if(document.getElementById('hms').innerHTML.trim()!='')
{
startTime = document.getElementById('hms').innerHTML;
}
else
{
var d = new Date();
var h=d.getHours();
var m=d.getMinutes();
var s=d.getSeconds();
startTime = h+':'+m+':'+s;
//OR
startTime = d.toTimeString().split(" ")[0]
}
var pieces = startTime.split(":");
var time = new Date();
time.setHours(pieces[0]);
time.setMinutes(pieces[1]);
time.setSeconds(pieces[2]);
var timediff = new Date(time.valueOf()-1000)
var newtime = timediff.toTimeString().split(" ")[0];
document.getElementById('hms').innerHTML=newtime ;
document.cookie = "remaining="+newtime;
setTimeout(count,1000);
}
count();
</script>
</html>