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能用导航菜单 单弹 双弹 缩小显手机端 原生css js

单弹 例1

代码1:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>现代响应式导航栏</title>
    <style>
        :root {
            --primary-color: #2196F3;
            --text-color: #ffffff;
            --bg-color: #1a1a1a;
            --hover-color: #1976D2;
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            background-color: #f5f5f5;
        }

        .navbar {
            display: flex;
            
            align-items: center;
            background-color: var(--bg-color);
            padding: 1rem 5%;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .navbar-brand {
            color: var(--text-color);
            font-size: 1.5rem;
            font-weight: 600;
            text-decoration: none;
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

        .navbar-brand:hover {
            color: var(--primary-color);
        }

        .navbar-menu {
            list-style: none;
            display: flex;
            margin: 0;
            padding: 0;
            align-items: center;
        }

        .navbar-item {
            margin-left: 2rem;
            position: relative;
        }

        .navbar-link {
            color: var(--text-color);
            text-decoration: none;
            font-size: 1rem;
            padding: 0.5rem 0;
            transition: var(--transition);
            position: relative;
        }

        .navbar-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: var(--transition);
        }

        .navbar-link:hover {
            color: var(--primary-color);
        }

        .navbar-link:hover::after {
            width: 100%;
        }

        .navbar-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            padding: 0.5rem;
            z-index: 100;
        }

        .bar {
            width: 25px;
            height: 2px;
            background-color: var(--text-color);
            margin: 3px 0;
            transition: var(--transition);
            border-radius: 2px;
        }

        /* 搜索框样式 */
        .search-container {
            display: flex;
            align-items: center;
            margin-left: 2rem;
        }

        .search-input {
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 20px;
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--text-color);
            font-size: 0.9rem;
            transition: var(--transition);
            width: 200px;
        }

        .search-input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        .search-input:focus {
            outline: none;
            background-color: rgba(255, 255, 255, 0.2);
            width: 250px;
        }

        /* 修改弹出菜单样式 */
        .dropdown {
            position: relative;
        }

        .dropdown-menu {
            position: absolute;
            top: calc(100% + 10px); /* 增加一点间距 */
            left: 50%;
            transform: translateX(-50%) translateY(10px);
            background-color: var(--bg-color);
            min-width: 200px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 1000;
            padding: 0.5rem 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
            list-style: none;
        }

        /* 添加小三角形 */
        .dropdown-menu::before {
            content: '';
            position: absolute;
            top: -5px;
            left: 50%;
            transform: translateX(-50%) rotate(45deg);
            width: 10px;
            height: 10px;
            background-color: var(--bg-color);
            border-left: 1px solid rgba(255, 255, 255, 0.1);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .dropdown:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .dropdown-item {
            display: flex;
            align-items: center;
            padding: 0.75rem 1.5rem;
            color: var(--text-color);
            text-decoration: none;
            transition: all 0.2s ease;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .dropdown-item:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--primary-color);
        }

        /* 修改箭头指示器 */
        .dropdown .navbar-link {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .dropdown .navbar-link::after {
            content: '▾';
            font-size: 12px;
            transition: transform 0.3s ease;
            position: static;
            background: none;
            width: auto;
            height: auto;
            margin-top: 2px;
        }

        .dropdown:hover .navbar-link::after {
            transform: rotate(180deg);
        }

        /* 移动端样式优化 */
        @media (max-width: 768px) {
            .navbar {
                padding: 1rem;
                justify-content: space-between;
            }

            .navbar-menu {
                display: none;
                flex-direction: column; /* 垂直排列 */
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--bg-color);
                padding: 1rem 0;
                box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
                opacity: 0;
                transform: translateY(-10px);
                transition: var(--transition);
            }

            .navbar-item {
                margin: 0;
                width: 100%;
                text-align: left;
                padding: 0 1rem;
            }

            .navbar-link {
                padding: 1rem 0;
                display: block;
                width: 100%;
            }

            .navbar-toggle {
                display: flex;
            }

            .navbar-menu.active {
                display: flex;
                opacity: 1;
                transform: translateY(0);
            }

            /* 汉堡菜单动画 */
            .navbar-toggle.active .bar:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }

            .navbar-toggle.active .bar:nth-child(2) {
                opacity: 0;
            }

            .navbar-toggle.active .bar:nth-child(3) {
                transform: rotate(-45deg) translate(5px, -5px);
            }

            /* 移动端下拉菜单样式优化 */
            .dropdown-menu {
                position: static;
                transform: none;
                background-color: transparent;
                box-shadow: none;
                opacity: 1;
                visibility: visible;
                display: none;
                margin: 0;
                padding: 0 0 0 1rem;
                border: none;
                border-radius: 0;
                border-left: 2px solid rgba(255, 255, 255, 0.1);
                min-width: auto;
                width: 100%;
            }

            .dropdown-menu::before {
                display: none;
            }

            .dropdown.active .dropdown-menu {
                display: block;
                animation: slideDown 0.3s ease forwards;
            }

            @keyframes slideDown {
                from {
                    opacity: 0;
                    transform: translateY(-10px);
                }
                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }

            .dropdown-item {
                padding: 0.75rem 1rem;
                color: rgba(255, 255, 255, 0.8);
            }

            .dropdown-item:hover {
                background-color: transparent;
                color: var(--primary-color);
                padding-left: 1.5rem;
            }

            /* 移动端箭头样式优化 */
            .dropdown .navbar-link {
                display: flex;
                justify-content: space-between;
                align-items: center;
                padding-right: 1rem;
            }

            .dropdown .navbar-link::after {
                margin: 0;
                font-size: 1rem;
            }

            /* 移动端分隔线 */
            .navbar-item:not(:last-child) {
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }

            /* 移动端搜索框位置调整 */
            .navbar-item:last-child {
                border-bottom: none;
                padding: 1rem;
            }

            .search-container {
                margin: 0;
                width: 100%;
                padding: 0;
            }

            .search-input {
                width: 100%;
                background-color: rgba(255, 255, 255, 0.1);
            }

            .search-input:focus {
                width: 100%;
                background-color: rgba(255, 255, 255, 0.15);
            }
        }
    </style>
</head>
<body>
    <nav class="navbar">
        <a href="#" class="navbar-brand">Brand</a>
        <div class="navbar-toggle" id="mobile-menu">
            <span class="bar"></span>
            <span class="bar"></span>
            <span class="bar"></span>
        </div>
        <ul class="navbar-menu">
            <li class="navbar-item"><a href="#" class="navbar-link">Home</a></li>
            <li class="navbar-item dropdown">
                <a href="#" class="navbar-link">Products</a>
                <ul class="dropdown-menu">
                    <li><a href="#" class="dropdown-item">New Arrivals</a></li>
                    <li><a href="#" class="dropdown-item">Best Sellers</a></li>
                    <li><a href="#" class="dropdown-item">Categories</a></li>
                    <li><a href="#" class="dropdown-item">Special Offers</a></li>
                </ul>
            </li>
            <li class="navbar-item"><a href="#" class="navbar-link">About</a></li>
            <li class="navbar-item"><a href="#" class="navbar-link">Services</a></li>
            <li class="navbar-item"><a href="#" class="navbar-link">Contact</a></li>
            <li class="navbar-item">
                <div class="search-container">
                    <input type="search" class="search-input" placeholder="Search...">
                </div>
            </li>
        </ul>
    </nav>

    <script>
        const mobileMenu = document.getElementById('mobile-menu');
        const navbarMenu = document.querySelector('.navbar-menu');

        // 移动端菜单切换
        mobileMenu.addEventListener('click', () => {
            mobileMenu.classList.toggle('active');
            navbarMenu.classList.toggle('active');
        });

        // 优化移动端下拉菜单处理
        const dropdowns = document.querySelectorAll('.dropdown');
        dropdowns.forEach(dropdown => {
            const link = dropdown.querySelector('.navbar-link');
            const menu = dropdown.querySelector('.dropdown-menu');
            
            link.addEventListener('click', (e) => {
                if (window.innerWidth <= 768) {
                    e.preventDefault();
                    e.stopPropagation();
                    
                    // 关闭其他打开的下拉菜单
                    dropdowns.forEach(otherDropdown => {
                        if (otherDropdown !== dropdown && otherDropdown.classList.contains('active')) {
                            otherDropdown.classList.remove('active');
                            otherDropdown.querySelector('.dropdown-menu').style.display = 'none';
                        }
                    });

                    // 切换当前下拉菜单
                    dropdown.classList.toggle('active');
                    if (dropdown.classList.contains('active')) {
                        menu.style.display = 'block';
                    } else {
                        menu.style.display = 'none';
                    }
                }
            });
        });

        // 点击导航链接时关闭菜单
        document.querySelectorAll('.navbar-link:not(.dropdown .navbar-link)').forEach(link => {
            link.addEventListener('click', () => {
                mobileMenu.classList.remove('active');
                navbarMenu.classList.remove('active');
            });
        });

        // 点击外部时关闭菜单
        document.addEventListener('click', (e) => {
            if (!navbarMenu.contains(e.target) && !mobileMenu.contains(e.target)) {
                mobileMenu.classList.remove('active');
                navbarMenu.classList.remove('active');
                dropdowns.forEach(dropdown => {
                    dropdown.classList.remove('active');
                });
            }
        });

        // 优化窗口大小改变时的处理
        let resizeTimer;
        window.addEventListener('resize', () => {
            clearTimeout(resizeTimer);
            resizeTimer = setTimeout(() => {
                if (window.innerWidth > 768) {
                    // 重置所有菜单状态
                    dropdowns.forEach(dropdown => {
                        dropdown.classList.remove('active');
                        const menu = dropdown.querySelector('.dropdown-menu');
                        menu.style.display = '';
                    });
                    mobileMenu.classList.remove('active');
                    navbarMenu.classList.remove('active');
                }
            }, 250);
        });
    </script>
</body>
</html>

双弹 例2

 

代码2:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>现代响应式导航栏</title>
    <style>
        :root {
            --primary-color: #1976D2;
            --text-color: #2c3e50;
            --bg-color: #ffffff;
            --hover-color: #1565C0;
            --border-color: #e0e0e0;
            --dropdown-bg: #ffffff;
            --dropdown-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }

        a {
            text-decoration: none;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            background-color: #f5f5f5;
        }

        .navbar {
            display: flex;
            
            align-items: center;
            background-color: var(--bg-color);
            padding: 1rem 5%;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .navbar-brand {
            color: var(--text-color);
            font-size: 1.5rem;
            font-weight: 600;
            text-decoration: none;
            display: flex;
            align-items: center;
            transition: var(--transition);
        }

        .navbar-brand:hover {
            color: var(--primary-color);
        }

        .navbar-menu {
            list-style: none;
            display: flex;
            margin: 0;
            padding: 0;
            align-items: center;
        }

        .navbar-item {
            margin-left: 2rem;
            position: relative;
        }

        .navbar-link {
            color: var(--text-color);
            text-decoration: none;
            font-size: 1rem;
            padding: 0.5rem 0;
            transition: var(--transition);
            position: relative;
        }

        .navbar-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: var(--transition);
        }

        .navbar-link:hover {
            color: var(--primary-color);
        }

        .navbar-link:hover::after {
            width: 100%;
        }

        .navbar-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            padding: 0.5rem;
            z-index: 100;
        }

        .bar {
            width: 25px;
            height: 2px;
            background-color: var(--text-color);
            margin: 3px 0;
            transition: var(--transition);
            border-radius: 2px;
        }

        /* 搜索框样式 */
        .search-container {
            display: flex;
            align-items: center;
            margin-left: 2rem;
        }

        .search-input {
            padding: 0.5rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 20px;
            background-color: #f5f5f5;
            color: var(--text-color);
            font-size: 0.9rem;
            transition: var(--transition);
            width: 200px;
        }

        .search-input::placeholder {
            color: #9e9e9e;
        }

        .search-input:focus {
            outline: none;
            background-color: #ffffff;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
            width: 250px;
        }

        /* 修改弹出菜单样式 */
        .dropdown {
            position: relative;
        }

        .dropdown-menu {
            position: absolute;
            top: calc(100% + 10px);
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--dropdown-bg);
            border-radius: 8px;
            box-shadow: var(--dropdown-shadow);
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 1000;
            border: 1px solid var(--border-color);
            
            /* 两列布局样式 */
            display: flex;
            gap: 3rem;
            min-width: 480px;
            padding: 2rem;
        }

        /* 添加小三角形 */
        .dropdown-menu::before {
            content: '';
            position: absolute;
            top: -5px;
            left: 50%;
            transform: translateX(-50%) rotate(45deg);
            width: 10px;
            height: 10px;
            background-color: var(--dropdown-bg);
            border-left: 1px solid var(--border-color);
            border-top: 1px solid var(--border-color);
        }

        .dropdown:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .dropdown-column {
            flex: 1;
            min-width: 200px;
        }

        .dropdown-header {
            color: var(--primary-color);
            font-size: 0.95rem;
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 1rem;
            padding: 0;
            letter-spacing: 0.5px;
        }

        .dropdown-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .dropdown-item {
            display: block;
            padding: 0.75rem 1rem;
            margin: 0.25rem 0;
            border-radius: 6px;
            color: var(--text-color);
            transition: all 0.2s ease;
            font-size: 0.95rem;
        }

        .dropdown-item:hover {
            background-color: #f5f7fa;
            transform: translateX(5px);
            color: var(--primary-color);
        }

        /* 修改箭头指示器 */
        .dropdown .navbar-link {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .dropdown .navbar-link::after {
            content: '▾';
            font-size: 12px;
            transition: transform 0.3s ease;
            position: static;
            background: none;
            width: auto;
            height: auto;
            margin-top: 2px;
        }

        .dropdown:hover .navbar-link::after {
            transform: rotate(180deg);
        }

        /* 移动端样式优化 */
        @media (max-width: 768px) {
            .navbar {
                padding: 1rem;
                justify-content: space-between;
            }

            .navbar-menu {
                display: none;
                flex-direction: column; /* 垂直排列 */
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--bg-color);
                padding: 1rem 0;
                box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
                opacity: 0;
                transform: translateY(-10px);
                transition: var(--transition);
            }

            .navbar-item {
                margin: 0;
                width: 100%;
                text-align: left;
                padding: 0 1rem;
            }

            .navbar-link {
                padding: 1rem 0;
                display: block;
                width: 100%;
            }

            .navbar-toggle {
                display: flex;
            }

            .navbar-menu.active {
                display: flex;
                opacity: 1;
                transform: translateY(0);
            }

            /* 汉堡菜单动画 */
            .navbar-toggle.active .bar:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }

            .navbar-toggle.active .bar:nth-child(2) {
                opacity: 0;
            }

            .navbar-toggle.active .bar:nth-child(3) {
                transform: rotate(-45deg) translate(5px, -5px);
            }

            /* 移动端下拉菜单样式优化 */
            .dropdown-menu {
                position: static;
                transform: none;
                opacity: 1;
                visibility: visible;
                display: none;
                box-shadow: none;
                border: none;
                border-radius: 0;
                min-width: 100%;
                padding: 1rem;
                margin: 0;
                background-color: #f8f9fa;
                border-left: 2px solid var(--primary-color);
                flex-direction: column;
                gap: 1.5rem;
            }

            .dropdown-menu::before {
                display: none;
            }

            .dropdown.active .dropdown-menu {
                display: flex;
                animation: slideDown 0.3s ease forwards;
            }

            @keyframes slideDown {
                from {
                    opacity: 0;
                    transform: translateY(-10px);
                }
                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }

            .dropdown-column {
                padding: 0 1rem;
            }

            .dropdown-header {
                font-size: 0.9rem;
                margin-bottom: 0.75rem;
                color: var(--text-color);
                opacity: 0.7;
            }

            .dropdown-item {
                padding: 0.75rem;
                margin: 0.15rem 0;
                border-radius: 4px;
            }

            .dropdown-item:hover {
                transform: translateX(8px);
                background-color: #f0f2f5;
            }

            /* 移动端箭头样式优化 */
            .dropdown .navbar-link {
                display: flex;
                justify-content: space-between;
                align-items: center;
                padding-right: 1rem;
            }

            .dropdown .navbar-link::after {
                margin: 0;
                font-size: 1rem;
            }

            /* 移动端分隔线 */
            .navbar-item:not(:last-child) {
                border-bottom: 1px solid var(--border-color);
            }

            /* 移动端搜索框位置调整 */
            .navbar-item:last-child {
                border-bottom: none;
                padding: 1rem;
            }

            .search-container {
                margin: 0;
                width: 100%;
                padding: 0;
            }

            .search-input {
                width: 100%;
                background-color: #f5f5f5;
            }

            .search-input:focus {
                width: 100%;
                background-color: #ffffff;
            }

            .bar {
                background-color: var(--text-color);
            }
        }
    </style>
</head>
<body>
    <nav class="navbar">
        <a href="#" class="navbar-brand">Brand</a>
        <div class="navbar-toggle" id="mobile-menu">
            <span class="bar"></span>
            <span class="bar"></span>
            <span class="bar"></span>
        </div>
        <ul class="navbar-menu">
            <li class="navbar-item"><a href="#" class="navbar-link">Home</a></li>
            <li class="navbar-item dropdown">
                <a href="#" class="navbar-link">Products</a>
                <div class="dropdown-menu">
                    <div class="dropdown-column">
                        <h3 class="dropdown-header">New & Featured</h3>
                        <ul class="dropdown-list">
                            <li><a href="#" class="dropdown-item">New Arrivals</a></li>
                            <li><a href="#" class="dropdown-item">Best Sellers</a></li>
                            <li><a href="#" class="dropdown-item">Special Offers</a></li>
                            <li><a href="#" class="dropdown-item">Coming Soon</a></li>
                        </ul>
                    </div>
                    <div class="dropdown-column">
                        <h3 class="dropdown-header">Categories</h3>
                        <ul class="dropdown-list">
                            <li><a href="#" class="dropdown-item">Electronics</a></li>
                            <li><a href="#" class="dropdown-item">Clothing</a></li>
                            <li><a href="#" class="dropdown-item">Home & Garden</a></li>
                            <li><a href="#" class="dropdown-item">Sports</a></li>
                        </ul>
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