How to create a JavaScript Countdown
Before We Start
How to create a JavaScript Countdown. Websites have timers which show the accurate time that can be used for any special event and coming soon things by using a countdown.
If there is a countdown in a website, it takes more attention and it highlights to the users the exact time the event is on and gives them a better experience.It has the remaining dates so the users can get a perfect idea than showing just the date.
How to create a JavaScript Countdown. So if you are a person who wishes to develop a website, it will be so wonderful if you know how to create a countdown too. Do you know how to create a countdown perfectly?
We are here to solve your problem.
However in this article you are going to learn, how to develop a countdown completely.
Before we start please read the below articles which easier you to understand the process, if you are new to development.
Step 1 – Add HTML
It’s too easy and simple. Just copy and paste below code in your HTML editor between <body> </body> tag.
<body>
<div class="timer">
<h3>JAVASCRIPT COUNTDOWN</h3>
<div class="timer--clock">
<div class="minutes-group clock-display-grp">
<div class="first number-grp">
<div class="number-grp-wrp">
<div class="num num-0">
<p>0</p>
</div>
<div class="num num-1">
<p>1</p>
</div>
<div class="num num-2">
<p>2</p>
</div>
<div class="num num-3">
<p>3</p>
</div>
<div class="num num-4">
<p>4</p>
</div>
<div class="num num-5">
<p>5</p>
</div>
<div class="num num-6">
<p>6</p>
</div>
<div class="num num-7">
<p>7</p>
</div>
<div class="num num-8">
<p>8</p>
</div>
<div class="num num-9">
<p>9</p>
</div>
</div>
</div>
<div class="second number-grp">
<div class="number-grp-wrp">
<div class="num num-0">
<p>0</p>
</div>
<div class="num num-1">
<p>1</p>
</div>
<div class="num num-2">
<p>2</p>
</div>
<div class="num num-3">
<p>3</p>
</div>
<div class="num num-4">
<p>4</p>
</div>
<div class="num num-5">
<p>5</p>
</div>
<div class="num num-6">
<p>6</p>
</div>
<div class="num num-7">
<p>7</p>
</div>
<div class="num num-8">
<p>8</p>
</div>
<div class="num num-9">
<p>9</p>
</div>
</div>
</div>
</div>
<div class="clock-separator">
<p>:</p>
</div>
<div class="seconds-group clock-display-grp">
<div class="first number-grp">
<div class="number-grp-wrp">
<div class="num num-0">
<p>0</p>
</div>
<div class="num num-1">
<p>1</p>
</div>
<div class="num num-2">
<p>2</p>
</div>
<div class="num num-3">
<p>3</p>
</div>
<div class="num num-4">
<p>4</p>
</div>
<div class="num num-5">
<p>5</p>
</div>
<div class="num num-6">
<p>6</p>
</div>
<div class="num num-7">
<p>7</p>
</div>
<div class="num num-8">
<p>8</p>
</div>
<div class="num num-9">
<p>9</p>
</div>
</div>
</div>
<div class="second number-grp">
<div class="number-grp-wrp">
<div class="num num-0">
<p>0</p>
</div>
<div class="num num-1">
<p>1</p>
</div>
<div class="num num-2">
<p>2</p>
</div>
<div class="num num-3">
<p>3</p>
</div>
<div class="num num-4">
<p>4</p>
</div>
<div class="num num-5">
<p>5</p>
</div>
<div class="num num-6">
<p>6</p>
</div>
<div class="num num-7">
<p>7</p>
</div>
<div class="num num-8">
<p>8</p>
</div>
<div class="num num-9">
<p>9</p>
</div>
</div>
</div>
</div>
</div>
</body>
Step 2 – Add CSS
Copy and paste below code in your HTML editor between <style></style> tag.
<style>
* {
margin: 0;
padding: 0;
font-family: "Arimo", sans-serif;
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
body {
background: #bd2b48;
color: white;
}
/*=================
* TIMER
*=================*/
.timer {
width: 550px;
height: 248px;
display: block;
position: absolute;
top: 50%;
left: 50%;
margin-left: -275px;
margin-top: -124px;
color: white;
}
.timer * {
cursor: default;
}
.timer h3 {
width: 100%;
font-size: 26px;
letter-spacing: 4px;
text-align: center;
}
.timer--clock {
width: 100%;
position: relative;
padding-left: 6px;
margin-top: 22px;
overflow: hidden;
}
.timer--clock .clock-display-grp {
width: 100%;
position: relative;
}
.timer--clock .clock-display-grp .number-grp {
width: auto;
display: block;
height: 156px;
float: left;
overflow: hidden;
}
.timer--clock .clock-display-grp .number-grp .number-grp-wrp {
width: 100%;
position: relative;
}
.timer--clock .clock-display-grp .number-grp .number-grp-wrp .num {
width: 100%;
position: relative;
height: 156px;
}
.timer--clock .clock-display-grp .number-grp .number-grp-wrp .num p {
width: auto;
display: table;
font-size: 205px;
line-height: 150px;
font-weight: bold;
}
.timer--clock .clock-separator {
width: auto;
float: left;
display: block;
height: 156px;
}
.timer--clock .clock-separator p {
width: auto;
display: table;
font-size: 205px;
line-height: 150px;
font-weight: bold;
}
.timer h4 {
width: 100%;
font-size: 10px;
letter-spacing: 6px;
text-align: center;
padding-top: 25px;
float: left;
}
.reload {
width: 125px;
height: 14px;
position: absolute;
bottom: 50vh;
left: 50%;
margin-left: -62.5px;
opacity: 0;
display: none;
cursor: pointer;
z-index: 9999;
}
.reload:hover svg path {
fill: #666666;
}
.reload:hover p {
color: #666666;
}
.reload svg {
width: 12px;
height: 12px;
float: left;
margin-right: 10px;
}
.reload p {
color: #2b2b2b;
font-size: 12px;
float: left;
line-height: 11px;
}
</style>
Step 2 – Add JavaScript
Copy and paste below code in your HTML editor between <script></script> tag.
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.16.1/TweenMax.min.js"></script>
<script>
TweenLite.defaultEase = Expo.easeOut;
initTimer("10:11"); // other ways --> "0:15" "03:5" "5:2"
var reloadBtn = document.querySelector(".reload");
var timerEl = document.querySelector(".timer");
function initTimer(t) {
var self = this,
timerEl = document.querySelector(".timer"),
minutesGroupEl = timerEl.querySelector(".minutes-group"),
secondsGroupEl = timerEl.querySelector(".seconds-group"),
minutesGroup = {
firstNum: minutesGroupEl.querySelector(".first"),
secondNum: minutesGroupEl.querySelector(".second")
},
secondsGroup = {
firstNum: secondsGroupEl.querySelector(".first"),
secondNum: secondsGroupEl.querySelector(".second")
};
var time = {
min: t.split(":")[0],
sec: t.split(":")[1]
};
var timeNumbers;
function updateTimer() {
var timestr;
var date = new Date();
date.setHours(0);
date.setMinutes(time.min);
date.setSeconds(time.sec);
var newDate = new Date(date.valueOf() - 1000);
var temp = newDate.toTimeString().split(" ");
var tempsplit = temp[0].split(":");
time.min = tempsplit[1];
time.sec = tempsplit[2];
timestr = time.min + time.sec;
timeNumbers = timestr.split("");
updateTimerDisplay(timeNumbers);
if (timestr === "0000") countdownFinished();
if (timestr != "0000") setTimeout(updateTimer, 1000);
}
function updateTimerDisplay(arr) {
animateNum(minutesGroup.firstNum, arr[0]);
animateNum(minutesGroup.secondNum, arr[1]);
animateNum(secondsGroup.firstNum, arr[2]);
animateNum(secondsGroup.secondNum, arr[3]);
}
function animateNum(group, arrayValue) {
TweenMax.killTweensOf(group.querySelector(".number-grp-wrp"));
TweenMax.to(group.querySelector(".number-grp-wrp"), 1, {
y: -group.querySelector(".num-" + arrayValue).offsetTop
});
}
setTimeout(updateTimer, 1000);
}
function countdownFinished() {
setTimeout(function () {
TweenMax.set(reloadBtn, { scale: 0.8, display: "block" });
TweenMax.to(timerEl, 1, { opacity: 0.2 });
TweenMax.to(reloadBtn, 0.5, { scale: 1, opacity: 1 });
}, 1000);
}
reloadBtn.addEventListener("click", function () {
TweenMax.to(this, 0.5, {
opacity: 0,
onComplete: function () {
reloadBtn.style.display = "none";
}
});
TweenMax.to(timerEl, 1, { opacity: 1 });
initTimer("12:35");
});
</script>
How to create a JavaScript Countdown
At the end we will have something like this. You can change fonts, colors, backgrounds and all things that you want.Enjoy it.
Video Tutorial
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More articles
https://w3schoolweb.com/how-to-create-image-gallery-in-html/
https://w3schoolweb.com/how-to-create-simple-image-slider/
https://w3schoolweb.com/how-to-create-simple-image-gallery/
https://w3schoolweb.com/how-to-create-bootstrap-gallery/
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