widauerdev/pi.html at master · a-ctor/widauerdev · GitHub

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<!DOCTYPE html>
<html lang="en">

<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>PI</title>
  <style>
    html {
      background-color: #0D4B76;
      overflow: hidden;
    }

    body {
      margin: 0;
    }

    #picontainer {
      color: white;
      font: 15rem Arial;
      margin: 0 auto;
      width: 100%;
      overflow: hidden;
      direction: rtl;
      text-overflow: clip;
    }

    #pi {

      text-align: right;
      user-select: none;
    }
  </style>
</head>

<body>
  <div id="picontainer">
    <label id="pi">3.141</label><br>
    score: <label id="score">0</label>
  </div>
</body>
<script>
  const piLabel = document.getElementById("pi");
  const scoreLabel = document.getElementById("score");
  const pi = "3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384";
  let position = 5, correct = true, score = 0;
  window.addEventListener("keypress", ev => {
    if (ev.key === "r") {
      piLabel.innerText = "3.141";
      scoreLabel.innerText = "0";
      position = 5;
      correct = true;
      return;
    }

    if (parseInt(ev.key) === NaN)
      return

    if (ev.key !== pi[position]) {
      correct = false;
      return;
    }

    piLabel.innerText += ev.key;
    position++;

    if (correct) {
      score++;
      scoreLabel.innerText = score;
    }
  });
</script>

</html>