How to create a Digital Clock using JavaScript
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In this simple article, I am going to share with you the source code of a simple animated Digital Clock in JavaScript.

Since, browsers can execute the JavaScript program at the client-side, the script(in this case app.js) will pick up the time of the client's computer and display it in the browser using the globally known date object and its methods.


<div class="container">
<h1>Digital Clock</h1>
<div id="clock"></div>


  background:rgb(32, 28, 28);

  text-decoration: underline;

  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;

  text-align: center;

#clock span{
  border-radius: 50%;


I added another simple line to tell if its PM or AM on the last span element.


document.addEventListener('DOMContentLoaded', () => {

const clockDiv = document.querySelector('#clock');

const timer = () => {
const now = new Date();

const hour = now.getHours();
const minutes = now.getMinutes();
const seconds = now.getSeconds();

const markup = `
<span>${hour < 10 ? '0' + hour : hour}</span> :
<span>${minutes < 10 ? '0' + minutes : minutes}</span> :
<span>${seconds < 10 ? '0' + seconds : seconds}</span>

//Added it after tutorial
<span>${hour >= 12 ? 'PM' : 'AM'}</span>


clockDiv.innerHTML = markup;

setInterval(() => {
}, 1000)


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collections_bookmark Category :: Javascript
date_range Published :: 4 years ago At: 03:05 AM
event_note Detailed Date :: May 23rd, 2020
person Writer :: Code
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