HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>lt vs gt</title>
  <style>
    body { font-family: sans-serif; padding: 16px; }
    td { border: 1px solid #ccc; padding: 8px 12px; text-align: center; }
    table { border-collapse: collapse; }
    #output { margin-top: 12px; padding: 12px; background: #fef3c7; font-family: monospace; white-space: pre-wrap; }
  </style>
</head>
<body>
  <table>
    <tr><td>0</td><td>1</td><td>2</td></tr>
    <tr><td>3</td><td>4</td><td>5</td></tr>
    <tr><td>6</td><td>7</td><td>8</td></tr>
  </table>
  <div id="output"></div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("#output").text(
      ":lt(4) → " + $("td:lt(4)").length + " cells (indices 0–3)\n:gt(4) → " + $("td:gt(4)").length + " cells (indices 5–8)"
    );
  </script>
</body>
</html>

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:lt(4) vs :gt(4) contrast (Try It)