HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>metaKey keydown demo</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 32rem; }
    #status { padding: 12px; background: #f1f5f9; border-radius: 6px; font-size: 14px; min-height: 2em; }
    p.hint { font-size: 13px; color: #64748b; }
  </style>
</head>
<body>
  <p>Press <strong>Cmd+S</strong> (Mac) or <strong>Ctrl+S</strong> (Windows) in this page.</p>
  <div id="status">Waiting for shortcut…</div>
  <p class="hint">Handler uses (metaKey || ctrlKey) for cross-platform save shortcut.</p>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $(document).on("keydown", function (event) {
      if ((event.metaKey || event.ctrlKey) && event.key === "s") {
        event.preventDefault();
        $("#status").text(
          "Save shortcut — metaKey: " + event.metaKey + ", ctrlKey: " + event.ctrlKey
        );
      }
    });
  </script>
</body>
</html>

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jQuery event.metaKey — keydown shortcut (Try It)