HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Visible menu items</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 24rem; }
    #menu { list-style: none; padding: 0; }
    #menu li { padding: 10px 14px; margin: 4px 0; background: #f1f5f9; cursor: pointer; border-radius: 6px; }
    #menu li.active { background: #fde047; }
    .extra { display: none; }
    button { margin-top: 12px; padding: 8px 12px; }
  </style>
</head>
<body>
  <ul id="menu">
    <li>Home</li>
    <li>About</li>
    <li class="extra">Pricing</li>
    <li class="extra">Contact</li>
  </ul>
  <button type="button" id="toggle">Toggle extra items</button>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("#menu li:visible").on("click", function () {
      $(this).addClass("active").siblings().removeClass("active");
    });
    $("#toggle").on("click", function () {
      $("#menu .extra").toggle();
    });
  </script>
</body>
</html>

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jQuery :visible — visible list items (Try It)