HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>pointer capture</title>
  <style>body{font-family:system-ui,sans-serif;margin:1rem;}#pad{width:240px;height:120px;border:2px solid #333;display:flex;align-items:center;justify-content:center;user-select:none;touch-action:none;background:#e0f2fe;cursor:grab;}</style>
</head>
<body>
  <div id="pad">Drag here</div>
  <pre id="log">ready</pre>
  <script>
    var pad = document.getElementById("pad");
    var log = document.getElementById("log");
    pad.addEventListener("pointerdown", function (e) {
      pad.setPointerCapture(e.pointerId);
      log.textContent = "pointer capture on " + e.pointerId;
    });
    pad.addEventListener("pointerup", function (e) {
      if (pad.hasPointerCapture(e.pointerId)) {
        pad.releasePointerCapture(e.pointerId);
      }
      log.textContent = "pointer capture released";
    });
    pad.addEventListener("pointermove", function (e) {
      if (!pad.hasPointerCapture(e.pointerId)) return;
      log.textContent = "move: " + e.clientX + ", " + e.clientY;
    });
  </script>
</body>
</html>

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Pointer Events — modern capture alternative (Try It)