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JavaScriptで勉強時間を伸ばすボタン作ってみた！

JavaScript

Posted at 2020-11-22

休憩したくなったら押すだけです！

永遠と「休憩」がでなければ、ひたすら勉強できますよ笑

index.html

<!DOCTYPE html>
<html lang="ja">
  <head>
    <meta charset="UTF-8" />
    <title>GAME</title>
    <link rel="stylesheet" href="css/styles.css">
  </head>
  <body>
    <h1>押してね！</h1>
    <div id="btn">?</div>
    <script src="js/main.js"></script>
  </body>
</html>

styles.css

h1 {
  text-align: center;
}

body {
  background: #efefef;
}

# btn {
  width: 200px;
  height: 200px;
  background: #ef454a;
  border-radius: 30%;
  margin: 30px auto;
  text-align: center;
  line-height: 200px;
  color: white;
  font-weight: bold;
  font-size: 42px;
  cursor: pointer;
  box-shadow: 0 10px 0 #d1483e;
  user-select: none;
}

# btn:hover {
  opacity: 0.9;
}

# btn:active {
  box-shadow: 0 5px 0 #d1483e;
  margin-top: 40px;
}

main.js

'use strict';

{
  const btn = document.getElementById('btn');
　
  btn.addEventListener('click', () => {
    const n = Math.floor(Math.random() * 3);

    switch (n) {
      case 0:
        btn.textContent = '休憩';
        break;
      case 1:
        btn.textContent = 'もう10分';
        break;
      case 2:
        btn.textContent = 'もう15分';
        break;
    }
  })
}

JavaScriptほんと楽しい(^^)

参考

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