JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="ja">
  <head>
    <meta charset="UTF-8">
    <title>Sample Code</title>
    <link rel="stylesheet" href="css\styles.css">
  </head>
    <body>
      <ul>
        <li><span>リストA</span></li>
        <li><span>リストB</span></li>
        <li><span>リストC</span></li>
        <li><span>リストD</span></li>
        <li><span>リストE</span></li>
      </ul>
      <script src="https://code.jquery.com/jquery-3.6.0.js" integrity="sha256-H+K7U5CnXl1h5ywQfKtSj8PCmoN9aaq30gDh27Xc0jk=" crossorigin="anonymous"></script>
      <script src="js\main.js"></script>
    </body>
</html>

JavaScript

$(function() {
  $("span").each(function(index) {
    if(index === 2) {
      return true;
    }
    $(this).css("background-color", "skyblue");
  });
});