JavaScript Tutorial

nth-last-of-type()

<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
  $("p:nth-last-of-type(3)").css("background-color", "yellow");
});
</script>
</head>
<body>
    <h1>This is a heading in body</h1>
    <p>The first paragraph in body (and the 3rd paragraph in body, counting from the last child).</p>
    <p>The second paragraph in body.</p>
    <div style="border:1px solid;">
      <span>This is a span element in div</span>
      <p>The first paragraph in div (and the 3rd paragraph in div, counting from the last child).</p>
      <p>The second paragraph in div.</p>
      <p>The last paragraph in div.</p>
    </div><br>
    <div style="border:1px solid;">
      <p>The first paragraph in another div (and the 3rd paragraph, counting from the last child).</p>
      <p>The second paragraph in another div.</p>
      <p>The last paragraph in another div.</p>
    </div>
    <p>The last paragraph in body.</p>
</body>
</html>