leftright/index.html at main · Keitark/leftright · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>右か左かをタップ</title>
    <style>
      body {
        margin: 0;
        padding: 0;
        text-align: center;
        font-size: 48px;
        font-weight: bold;
        height: 100vh;
        display: flex;
        justify-content: center;
        align-items: center;
      }
      .message {
        margin-top: -100px;
      }
      .score {
        margin-top: 50px;
        font-size: 24px;
        font-weight: normal;
      }
    </style>
  </head>
  <body>
    <div class="message"></div>
    <div class="score">スコア: <span id="score">0</span></div>
    <script>
      let score = 0;
      let timer;

      function startGame() {
        timer = setTimeout(function() {
          endGame(false);
        }, 1000);

        let message = document.querySelector(".message");
        let side = Math.random() < 0.5 ? "左" : "右";
        message.textContent = side;
        message.style.color = "white";
        message.style.backgroundColor = "black";

        document.body.addEventListener("click", function(event) {
          clearTimeout(timer);
          let selectedSide = event.clientX < window.innerWidth / 2 ? "左" : "右";
          if (selectedSide === side) {
            endGame(true);
          } else {
            endGame(false);
          }
        }, { once: true });
      }

      function endGame(win) {
        let message = document.querySelector(".message");
        message.textContent = win ? "正解！" : "残念！";
        message.style.color = win ? "green" : "red";
        message.style.backgroundColor = "white";

        if (win) {
          score++;
          document.querySelector("#score").textContent = score;
        }

        if (score === 20) {
          clearInterval(interval);
          message.textContent = "ゲーム終了！";
          message.style.color = "white";
          message.style.backgroundColor = "black";
        } else {
          setTimeout(startGame, 1000);
        }
      }

      let interval = setInterval(startGame, 1000);
    </script>
  </body>
</html>