jquery控制css动画 列表

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>jQuery CSS Animation</title>
    <style>
        .list-item {
            opacity: 0;
            transition: opacity 1s ease-in-out;
        }
        .list-item.active {
            opacity: 1;
        }
    </style>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
    <ul id="myList">
        <li class="list-item">Item 1</li>
        <li class="list-item">Item 2</li>
        <li class="list-item">Item 3</li>
    </ul>

    <button id="animateBtn">Animate List</button>

    <script>
        $(document).ready(function() {
            $('#animateBtn').click(function() {
                $('.list-item').each(function(index) {
                    $(this).delay(500 * index).queue(function(next) {
                        $(this).addClass('active');
                        next();
                    });
                });
            });
        });
    </script>
</body>
</html>