HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>touchstart multi</title>
  <style>
    #pad {
      width: 280px; height: 140px; border: 2px solid #333;
      display: flex; align-items: center; justify-content: center;
      touch-action: none; background: #f5f5f5;
    }
  </style>
</head>
<body>
  <div id="pad">Use 1–2 fingers (or click)</div>
  <pre id="out">fingers down=0</pre>
  <script>
    var pad = document.getElementById("pad");
    var out = document.getElementById("out");
    function showCount(event) {
      out.textContent = "fingers down=" + event.touches.length;
    }
    pad.addEventListener("touchstart", showCount, { passive: true });
    pad.addEventListener("touchend", showCount);
    pad.addEventListener("touchcancel", showCount);
    pad.addEventListener("mousedown", function () {
      out.textContent = "fingers down=1 (mouse practice)";
    });
    window.addEventListener("mouseup", function () {
      out.textContent = "fingers down=0";
    });
  </script>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

Element touchstart — multi-touch count (Try It)