HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>filter odd performance</title>
  <style>
    body { font-family: sans-serif; padding: 16px; }
    .card { padding: 10px; margin: 6px 0; border: 1px solid #ccc; }
  </style>
</head>
<body>
  <div class="card">Card 0</div>
  <div class="card">Card 1</div>
  <div class="card">Card 2</div>
  <div class="card">Card 3</div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $(".card").filter(":odd").css("borderColor", "#7c3aed");
  </script>
</body>
</html>

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CSS selector then .filter(':odd') (Try It)