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Javascript - Incrementing Counter 본문

Javascript

Javascript - Incrementing Counter

HiroDaegu 2021. 10. 22. 00:30
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<!DOCTYPE html>
<html lang="ko">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Incrementing Counter</title>
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.14.0/css/all.min.css" integrity="sha512-1PKOgIY59xJ8Co8+NE6FZ+LOAZKjy+KY8iq0G4B3CyeY6wYHN3yt9PW0XpSriVlkMXe40PTKnXrLnZ9+fkDaog==" crossorigin="anonymous" />
  <link rel="stylesheet" href="style.css">
  <script defer src="main.js"></script>
</head>
<body>
  <div class="counter-container">
    <i class="fab fa-twitter fa-3x"></i>
    <div class="counter" data-target="12000"></div>
    <span>Twitter Followers</span>
  </div>

  <div class="counter-container">
    <i class="fab fa-youtube fa-3x"></i>
    <div class="counter" data-target="5000"></div>
    <span>YouTube Subscribers</span>
  </div>

  <div class="counter-container">
    <i class="fab fa-facebook fa-3x"></i>
    <div class="counter" data-target="7500"></div>
    <span>Facebook Fans</span>
  </div>
</body>
</html>
@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono&display=swap');

* {
  box-sizing: border-box;
}

body {
  background-color: #8e44ad;
  color: #fff;
  font-family: 'Roboto Mono', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  overflow: hidden;
  margin: 0;
}

.counter-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  margin: 30px 50px;
}

.counter {
  font-size: 60px;
  margin-top: 10px;
}

@media(max-width: 580px) {
  body {
    flex-direction: column;
  }
}
const counters = document.querySelectorAll(".counter");

counters.forEach(counter => {
  counter.innerText = "0";

  const updateCounter = () => {
    const target = +counter.getAttribute("data-target");
    const c = +counter.innerText;

    const increment = target / 200;

    if(c < target) {
      counter.innerText  = `${Math.ceil(c + increment)}`
      setTimeout(updateCounter, 1)
    } else {
      counter.innerText = target;
    }
  }

  updateCounter();
})
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