jquery实现树型菜单

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Tree Menu Example</title>
    <style>
        ul {
            list-style-type: none;
            padding-left: 20px;
        }
        .tree-toggle {
            cursor: pointer;
        }
    </style>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
    <ul class="tree-menu">
        <li>
            <span class="tree-toggle">Node 1</span>
            <ul>
                <li>Sub Node 1.1</li>
                <li>Sub Node 1.2</li>
            </ul>
        </li>
        <li>
            <span class="tree-toggle">Node 2</span>
            <ul>
                <li>Sub Node 2.1</li>
                <li>Sub Node 2.2</li>
                <li>
                    <span class="tree-toggle">Sub Node 2.3</span>
                    <ul>
                        <li>Sub Node 2.3.1</li>
                        <li>Sub Node 2.3.2</li>
                    </ul>
                </li>
            </ul>
        </li>
    </ul>

    <script>
        $(document).ready(function() {
            $('.tree-toggle').click(function() {
                $(this).next('ul').slideToggle();
            });
        });
    </script>
</body>
</html>

$('.tree-toggle').click(function() {
    $(this).next('ul').slideToggle(300, 'easeOutQuint');
});

$(document).on('click', '.tree-toggle', function() {
    $(this).next('ul').slideToggle();
});