JavaScript-Problems-and-Solution/CreateAColoredClock.html at master · evitajain15/JavaScript-Problems-and-Solution · GitHub

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<!DOCTYPE html>
<html>
<head>
  <title>DOM</title>
</head>
<style>
	.hour{
		color: red;
	}
	.min{
		color: green;
	}
	.sec{
		color: blue;
	}
</style>
<body>

	<div id="clock">
		<span class="hour">hh</span>:<span class="min">mm</span>:<span class="sec">ss</span>
	</div>
	<script>
		let timerId;

		function update() {
			let clock = document.getElementById('clock')
	   		let date = new Date();

			let hours = date.getHours();
			if (hours < 10) hours = '0' + hours;
			clock.children[0].innerHTML = hours;

			let mins = date.getMinutes();
			if (mins < 10) mins = '0' + mins;
			clock.children[1].innerHTML = mins;

			let secs = date.getSeconds();
			if (secs < 10) secs = '0' + secs;
			clock.children[2].innerHTML = secs;
		}

		function clockStart() {
			timerId = setInterval(update,1000);
			update();
		}

		function clockStop() {
			clearInterval(timerId);
		}

		clockStart();

	</script>
</body>
</html>