二级菜单jquery

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>二级菜单示例</title>
    <style>
        .menu {
            list-style: none;
            padding: 0;
        }
        .menu li {
            display: inline-block;
            margin-right: 20px;
        }
        .submenu {
            display: none;
            list-style: none;
            padding: 0;
            position: absolute;
            background-color: #fff;
            border: 1px solid #ccc;
        }
        .menu li:hover .submenu {
            display: block;
        }
    </style>
</head>
<body>
    <ul class="menu">
        <li>
            主菜单1
            <ul class="submenu">
                <li>子菜单1-1</li>
                <li>子菜单1-2</li>
            </ul>
        </li>
        <li>
            主菜单2
            <ul class="submenu">
                <li>子菜单2-1</li>
                <li>子菜单2-2</li>
            </ul>
        </li>
    </ul>

    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <script>
        $(document).ready(function() {
            $('.menu > li').hover(
                function() {
                    $(this).find('.submenu').stop(true, true).slideDown();
                },
                function() {
                    $(this).find('.submenu').stop(true, true).slideUp();
                }
            );
        });
    </script>
</body>
</html>