JavaScript-Sandpit/dots_track_mouse_coordinates.html at main · johnstack/JavaScript-Sandpit · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Mouse Tracker with Dot</title>
  <style>
    body {
      margin: 0;
      background-color: white;
      height: 100vh;
      font-family: Arial, sans-serif;
      font-size: 24px;
      overflow: hidden;
    }

    #coords {
      position: absolute;
      top: 20px;
      left: 20px;
      color: black;
      background: rgba(255, 255, 255, 0.8);
      padding: 10px;
      z-index: 1000;
    }

    .tracker-dot {
      position: absolute;
      width: 10px;
      height: 10px;
      background-color: red;
      border-radius: 50%;
      pointer-events: none;
    }

    #dot-horizontal {
      top: 50px;
      transform: translateY(-50%);
    }

    #dot-vertical {
      left: 50px;
      transform: translateX(-50%);
    }
  </style>
</head>
<body>
  <div id="coords">X: 0, Y: 0</div>
  <div id="dot-horizontal" class="tracker-dot"></div>
  <div id="dot-vertical" class="tracker-dot"></div>

  <script>
    const coordsDisplay = document.getElementById('coords');
    const dotH = document.getElementById('dot-horizontal');
    const dotV = document.getElementById('dot-vertical');

    document.addEventListener('mousemove', (e) => {
      const { clientX, clientY } = e;

      coordsDisplay.textContent = `X: ${clientX}, Y: ${clientY}`;

      dotH.style.left = `${clientX}px`;
      dotV.style.top = `${clientY}px`;
    });
  </script>
</body>
</html>