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Pure Vanilla JavaScript Stop Watch With Controls In Milliseconds

This Vanilla JavaScript code snippet helps you to create a stopwatch with real-time updating seconds and milliseconds. It comes with three buttons to start, stop and reset the stopwatch. The code is based on a simple idea to convert milliseconds to seconds using a timer function.

There are many code snippets available online or on many other blogs and websites, but everyone cannot optimize your blog or website, so you need some optimized code snippets. So now checkout out the code snippet for your blog and website that will give you all features for your desired code. Now grab the ready-to-use code and paste it where you want.


  1. Light Weight.
  2. Pure Vanilla JavaScript.
  3. Cross Browser.
  4. No JQuery Files.
  5. Fully Customizable.
  6. Responsive.

How To Create Pure Vanilla JavaScript Stop Watch With Controls In Milliseconds?

There are a few easy and understandable steps to achieve your desired functionality that we are gonna share below. Follow each step perfectly.


<style type="text/css">
body {
font-family: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
height: 100%;
.wrapper {
width: 800px;
margin: 30px auto;
color: #414141;
text-align: center;
h1, h2, h3 {
font-family: "Roboto", sans-serif;
font-weight: 100;
font-size: 2.6em;
text-transform: uppercase;
#seconds, #tens {
font-size: 2em;
button {
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
border-radius: 5px;
-khtml-border-radius: 5px;
background: #ffa600;
color: #fff;
border: solid 1px #fff;
text-decoration: none;
cursor: pointer;
font-size: 1.2em;
padding: 18px 10px;
width: 180px;
margin: 10px;
outline: none;
button:hover {
-webkit-transition: all 0.5s ease-in-out;
-moz-transition: all 0.5s ease-in-out;
transition: all 0.5s ease-in-out;
background: #fff;
border: solid 1px #fff;
color: #ffa600;


<div class="wrapper">
<h2>Vanilla JavaScript Stopwatch</h2>
<p><span id="seconds">00</span>:<span id="tens">00</span></p>
<button id="button-start">Start</button>
<button id="button-stop">Stop</button>
<button id="button-reset">Reset</button>


<script type="text/javascript">
window.onload = function () {
var seconds = 00; 
var tens = 00; 
var appendTens = document.getElementById("tens")
var appendSeconds = document.getElementById("seconds")
var buttonStart = document.getElementById('button-start');
var buttonStop = document.getElementById('button-stop');
var buttonReset = document.getElementById('button-reset');
var Interval ;
buttonStart.onclick = function() {
Interval = setInterval(startTimer, 10);
buttonStop.onclick = function() {
buttonReset.onclick = function() {
tens = "00";
seconds = "00";
appendTens.innerHTML = tens;
appendSeconds.innerHTML = seconds;
function startTimer () {
if(tens <= 9){
appendTens.innerHTML = "0" + tens;
if (tens > 9){
appendTens.innerHTML = tens;
if (tens > 99) {
appendSeconds.innerHTML = "0" + seconds;
tens = 0;
appendTens.innerHTML = "0" + 0;
if (seconds > 9){
appendSeconds.innerHTML = seconds;


No need to customize it. Just copy-paste. Rest edit the code as per comments and need.

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Troubleshooting the Errors:

Do it with concentration and patience. Check your all steps again and all codes or scripts. If you find any error you can contact us anytime via comment or better via email, We are always here to help you.

Final Words:

That’s all we have. We hope that you liked this article. If you have any problem with this code in your template then feel free to contact us with a full explanation of your problem. We will reply to you as time allows us If you have any doubts or problems please comment below. We are happy to help you! If you liked this article, Don’t forget to share this with your friends so they can also take benefit from it and leave.

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