js time counter code example
Example 1: javascript count time
var start = new Date().getTime();
for (i = 0; i < 50000; ++i) {
}
var end = new Date().getTime();
var time = end - start;
alert('Execution time: ' + time);
Example 2: javascript count time
var start = new Date().getTime();
for (i = 0; i < 50000; ++i) {
}
var end = new Date().getTime();
var time = end - start;
alert('Execution time: ' + time);
Example 3: html timer
<!DOCTYPE HTML>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
p {
text-align: center;
font-size: 60px;
margin-top: 0px;
}
</style>
</head>
<body>
<p id="demo"></p>
<script>
var countDownDate = new Date("Jan 5, 2021 15:37:25").getTime();
var x = setInterval(function() {
var now = new Date().getTime();
var distance = countDownDate - now;
var days = Math.floor(distance / (1000 * 60 * 60 * 24));
var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
var seconds = Math.floor((distance % (1000 * 60)) / 1000);
document.getElementById("demo").innerHTML = days + "d " + hours + "h "
+ minutes + "m " + seconds + "s ";
if (distance < 0) {
clearInterval(x);
document.getElementById("demo").innerHTML = "EXPIRED";
}
}, 1000);
</script>
</body>
</html>
Example 4: countdown in js
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);
};
Example 5: javascript get clock time in auto counter up
<html>
<head>
<title>(Type a title for your page here)</title>
<script type="text/javascript">
function display_c(){
var refresh=1000;
mytime=setTimeout('display_ct()',refresh)
}
function display_ct() {
var x = new Date()
document.getElementById('ct').innerHTML = x;
display_c();
}
</script>
</head>
<body onload=display_ct();>
<span id='ct' ></span>
</body>
</html>
Example 6: javascript get clock time in auto counter up
function display_ct() {
var x = new Date()
var x1=x.getMonth() + 1+ "/" + x.getDate() + "/" + x.getYear();
x1 = x1 + " - " + x.getHours( )+ ":" + x.getMinutes() + ":" + x.getSeconds();
document.getElementById('ct').innerHTML = x1;
display_c();
}