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index.html
<!DOCTYPE html>
<html>
<head>
<title>Something</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<div class="js-clock">
<h1>00:00</h1>
</div>
<script src="clock.js"></script>
</body>
</html>
index.js
const clockContainer = document.querySelector(".js-clock");
const clockTitle = clockContainer.querySelector("h1")
function getTime(){
const date = new Date();
const minutes = date.getMinutes();
const hours = date.getHours();
const seconds = date.getSeconds();
clockTitle.innerText = `${hours <10 ? `0${hours}` : hours }:${minutes < 10 ? `0${minutes}` : minutes}:${seconds < 10 ? `0${seconds}` : seconds}`;
}
function init(){
getTime();
setInterval(getTime, 1000);
}
init(); 
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꽃꽂이하는개발자