Rahul Jangid


How to Create a Stopwatch in JavaScript

Hello, guys in this tutorial we will create a Stopwatch using HTML CSS, and JavaScript.***

Common Query

  1. How do you make a stopwatch in JavaScript?
  2. How to create a stopwatch with JavaScript
  3. JavaScript simple stopwatch

Hello, guys In this tutorial we will try to solve above mention query. and also we will learn how to create a Stopwatch using HTML CSS and JavaScript.

First, we need to create three files index.html and style.css then we need to do code for it.


Add below code inside index.html

<!DOCTYPE html>
<html lang="en">
    <meta charset="UTF-8" />
    <title>Create a Stopwatch in JavaScript</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <link rel="stylesheet" href="style.css" />
    <link rel="preconnect" href="https://fonts.gstatic.com">
    <link href="https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@200;300;400&display=swap" rel="stylesheet">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
    <div class="wrapper">
      <div id="stopwatch">00:00:00:00</div>
      <ul id="buttons">
        <li><button id="start">Start</button></li>
        <li><button id="pause">Stop</button></li>
        <li><button id="reset">Reset</button></li>

      const watch = document.querySelector("#stopwatch");
      let millisecound = 0;
      let timer;

      function timeStart(){
        watch.style.color = "#0f62fe";
        timer = setInterval(() => {
          millisecound += 10;

          let dateTimer = new Date(millisecound);

          watch.innerHTML = 
          ('0'+dateTimer.getUTCHours()).slice(-2) + ':' +
          ('0'+dateTimer.getUTCMinutes()).slice(-2) + ':' +
          ('0'+dateTimer.getUTCSeconds()).slice(-2) + ':' +
        }, 10);

      function timePaused() {
        watch.style.color = "red";

      function timeReset(){
        millisecound = 0;
        watch.innerHTML = "00:00:00:00";

      document.addEventListener('click', (e) => {
        const el = e.target;

        if(el.id === 'start') timeStart();
        if(el.id === 'pause') timePaused();
        if(el.id === 'reset') timeReset();


Then we need to add code for style.css which code I provide in the below screen.

* {
  padding: 0;
  margin: 0;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  font-family: 'IBM Plex Sans', sans-serif;
body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: #f2f4f6;
.wrapper {
  width: 400px;
  padding: 20px;
  background: #fff;
  box-shadow: 0 10px 20px rgb(64 64 64 / 5%);
  border: 1px solid rgb(64 64 64 / 5%);
div#stopwatch {
  font-size: 50px;
  line-height: 60px;
  text-align: center;
  padding: 0 0 50px 0;
ul#buttons {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
ul#buttons button {
  background: #0f62fe;
  border: transparent;
  width: 100px;
  color: #fff;
  font-size: 18px;
  text-align: left;
  display: block;
  padding: 10px 0 10px 20px;
  cursor: pointer;


#html #css #javascript

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How to Create a Stopwatch in JavaScript

Rahul Jangid


What is JavaScript - Stackfindover - Blog

Who invented JavaScript, how it works, as we have given information about Programming language in our previous article ( What is PHP ), but today we will talk about what is JavaScript, why JavaScript is used The Answers to all such questions and much other information about JavaScript, you are going to get here today. Hope this information will work for you.

Who invented JavaScript?

JavaScript language was invented by Brendan Eich in 1995. JavaScript is inspired by Java Programming Language. The first name of JavaScript was Mocha which was named by Marc Andreessen, Marc Andreessen is the founder of Netscape and in the same year Mocha was renamed LiveScript, and later in December 1995, it was renamed JavaScript which is still in trend.

What is JavaScript?

JavaScript is a client-side scripting language used with HTML (Hypertext Markup Language). JavaScript is an Interpreted / Oriented language called JS in programming language JavaScript code can be run on any normal web browser. To run the code of JavaScript, we have to enable JavaScript of Web Browser. But some web browsers already have JavaScript enabled.

Today almost all websites are using it as web technology, mind is that there is maximum scope in JavaScript in the coming time, so if you want to become a programmer, then you can be very beneficial to learn JavaScript.

JavaScript Hello World Program

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How to comment JavaScript code?

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<script type="text/javascript">

//single line comment

/* document.write("Hello"); */


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VS Code

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