根据图片制作横向导航菜单，鼠标悬停即可下拉我的菜单效果

根据图片制作横向导航菜单，鼠标悬停即可下拉我的菜单效果
感谢感谢！

img

使用:hover可实现

哈哈,不错,使用:hover可实现

不知道你学习的Jquery所学的知识点是哪些，使用:hover是比较容易实现的方式。

img

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
    <style>
        .navbar__item {
            list-style: none;
            padding: 0;
            margin: 0;
            float: left;
            display: block;
            width: 120px;
            background-color: rgb(206, 176, 0);
            line-height: 40px;
            text-align: center;
            color: black;
        }

        .navbar__item:hover {
            background-color: rgb(37, 76, 76);
            color: white;
        }

        .navbar__item>ul {
            height: 0;
            overflow: hidden;
            padding-inline-start: 0;
        }

        .navbar__item:hover>ul {
            height: auto;
        }
    </style>

</head>

<body>
    <ul class="navbar">
        <!-- <li class="navbar__item">导航菜单</li>
        <li class="navbar__item">下来菜单
            <ul>
                <li class="navbar__item">JavaScript</li>
                <li class="navbar__item">JQuery</li>
                <li class="navbar__item">HTML5</li>
                <li class="navbar__item">CSS</li>
                <li class="navbar__item">PHP</li>
                <li class="navbar__item">ASP</li>
            </ul>
        </li> -->
    </ul>



    <script>
        $(document.body).ready(() => {
            // 仅支持二级菜单
            let navbar = [
                { label: '导航菜单' },
                {
                    label: '下拉菜单',
                    children: [
                        { label: 'JavaScript' },
                        { label: 'JQuery' },
                        { label: 'HTML5' },
                        { label: 'CSS' },
                        { label: 'PHP' },
                        { label: 'ASP' },
                    ]
                }
            ]

            navbar.forEach((n) => {
                let children = ``
                if (n.children && n.children.length > 0) {
                    children += `<ul>`
                    for (const item of n.children) {
                        children += `<li class="navbar__item">${item.label}</li>`
                    }
                    children += `</ul>`
                }
                let html = `<li class="navbar__item">${n.label}${children}</li>`
                $('.navbar').append(html)
            })
        }) 
    </script>
</body>

</html>