CountdownTutorials

How to create a JavaScript Countdown

How to create a JavaScript Countdown

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.

How to create a JavaScript Countdown

Video Tutorial

Please watch this video to better understand this tutorial and don’t forget to subscribe to our channel.


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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