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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery .filter() callback</title>
  <style>
    div { width: 60px; height: 60px; margin: 5px; float: left; border: 3px white solid; }
  </style>
</head>
<body>
  <div></div><div></div><div></div><div id="fourth"></div><div></div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("div")
      .css("background", "#b4b0da")
      .filter(function (index) {
        return index === 1 || $(this).attr("id") === "fourth";
      })
      .css("border", "3px double red");
  </script>
</body>
</html>

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jQuery .filter() — index or id (Try It)