HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery parent selector demo</title>
  <style>
    body { font-family: sans-serif; padding: 16px; }
    td { width: 80px; height: 40px; background: green; text-align: center; border: 1px solid #333; }
    table { border-collapse: collapse; }
  </style>
</head>
<body>
  <table>
    <tr><td>Value 1</td><td></td></tr>
    <tr><td></td><td>Value 2</td></tr>
  </table>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("td:parent").fadeTo(1500, 0.3);
  </script>
</body>
</html>

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jQuery td:parent — official demo (Try It)