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Start and stop watch using HTML, CSS, and JavaScript
Friends welcome to another tutorial on techmidpoint. Friends, today I have come up with another new tutorial for you. I hope you like it. In this tutorial, you will learn how to make a start and stop watch using HTML, CSS, and JavaScript. It starts running when you click on the start button and stops when you click on the stop button.
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Start and stop watch using HTML, CSS and JavaScript</title>
</head>
<body>
<center>
<div id="stopwatch">
<div class="time">
<span id="minute">00</span>
<span id="second">00</span>
<span id="ms">00</span>
</div>
<br />
<button id="start" onclick="start();">Start</button>
<button id="stop" onclick="stop();">Stop</button>
</div>
</center>
<script type="text/javascript">
var timer = 0;
var timerInterval;
var ms = document.getElementById('ms');
var second = document.getElementById('second');
var minute = document.getElementById('minute');
function start() {
stop();
timerInterval = setInterval(function() {
timer += 1/60;
msVal = Math.floor((timer - Math.floor(timer))*100);
secondVal = Math.floor(timer) - Math.floor(timer/60) * 60;
minuteVal = Math.floor(timer/60);
ms.innerHTML = msVal < 10 ? "0" + msVal.toString() : msVal;
second.innerHTML = secondVal < 10 ? "0" + secondVal.toString() : secondVal;
minute.innerHTML = minuteVal < 10 ? "0" + minuteVal.toString() : minuteVal;
}, 1000/60);
}
function stop() {
clearInterval(timerInterval);
}
</script>
</body>
</html>
CSS
body {
font-family: arial black;
background: #6d8caa;
justify-content: center;
align-items: center;
display: flex;
height: 100vh;
}
#stopwatch {
width: 300px;
height: 90px;
background: #fff;
color: #333;
border-radius: 10px;
padding: 60px 50px 100px;
text-align: center;
font-size: 30px;
}
#stopwatch span {
background: #c7e0f8;
color: #0776de;
padding: 10px;
width: 55px;
border-radius: 5px;
margin: 3px;
display: inline-block;
}
.time{
font-size: 40px;
margin-left: -25px;
letter-spacing: 1.5px;
}
#stopwatch span{
margin-left: 20px;
}
#stopwatch button:first-of-type {
margin-bottom: 15px;
}
#stopwatch button {
font-size: 22px;
border: none;
background-color: #2e80b3;
color: white;
border-radius: 5px;
width: 140px;
height: 50px;
transition: .3s;
}
#stopwatch button:last-child{
background-color: #ae7617;
}
#stopwatch button:hover {
background: #333;
color: #fff;
cursor: pointer;
}
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