index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Array</title>
</head>
<body>
    <ul>
        <li class="1">1</li>
        <li class="2">2</li>
        <li class="3">3</li>
        <li class="4">4</li>
        <li class="5">5</li>

    </ul>
    <script src="./Objects/Classes.js"></script>
</body>
</html>