clock/index.html at master · wightmike/clock · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>JS + CSS Clock</title>
  <link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
  <div class="clock">
    <div class="clock-face">
      <div class="hand hour-hand"></div>
      <div class="hand minute-hand"></div>
      <div class="hand second-hand"></div>
    </div>
  </div>
  <script>

    // Grab the clock hands
    const secondHand = document.querySelector('.second-hand');
    const minuteHand = document.querySelector('.minute-hand');
    const hourHand = document.querySelector('.hour-hand');

    function setDate() {
      // Grab date & time
      const now = new Date();
      const seconds = now.getSeconds();
      const minutes = now.getMinutes();
      const hours = now.getHours();

      // Change seconds, minutes, and hours to degrees
      const secondsToDegrees = ((seconds / 60) * 360) + 90;
      const minutesToDegrees = ((minutes / 60) * 360) + 90;
      const hoursToDegrees = ((hours / 12) * 360) + 90;

      // Set position of clock hands
      secondHand.style.transform = `rotate(${secondsToDegrees}deg)`;
      minuteHand.style.transform = `rotate(${minutesToDegrees}deg)`;
      hourHand.style.transform = `rotate(${hoursToDegrees}deg)`;

      // Log time to console
      console.log(`${hours} : ${minutes} : ${seconds}`);
    }

    // Update clock every second
    setInterval(setDate, 1000);

  </script>
</body>
</html>