stackoverflow js countdown timer notifity code example
Example 1: countdown timer javascript stack overflow
var hms = "02:30:00";
var a = hms.split(':');
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);
document.form_quiz.submit();
} else {
seconds--;
}
}
var countdownTimer = setInterval('secondPassed()', 1000);
}
Example 2: countdown timer javascript stack overflow
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);
};