【JS】可下拉导航栏

Osinghong3周前 (05-26)成果展示81

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>D24C04429</title>
    <style>
        .navbar {
            background: #222;
            padding: 0;
            margin: 0;
        }
        .navbar ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
        }
        .navbar li {
            position: relative;
        }
        .navbar > ul > li {
            float: left;
        }
        .navbar a {
            display: block;
            color: #fff;
            padding: 14px 24px;
            text-decoration: none;
            font-size: 18px;
        }
        .navbar a:hover {
            background: #444;
        }
        .navbar .submenu {
            display: none;
            position: absolute;
            left: 0;
            top: 100%;
            background: #333;
            min-width: 160px;
            z-index: 100;
        }
        .navbar .submenu li {
            float: none;
        }
        .navbar .submenu a {
            padding: 10px 20px;
            font-size: 16px;
        }
        .navbar li.show > .submenu {
            display: block;
        }
    </style>
</head>
<body>
    <nav class="navbar">
        <ul>
            <li>
                <a href="#">首页</a>
            </li>
            <li>
                <a href="#">产品</a>
                <ul class="submenu">
                    <li><a href="#">手机</a></li>
                    <li><a href="#">电脑</a></li>
                    <li><a href="#">配件</a></li>
                </ul>
            </li>
            <li>
                <a href="#">关于我们</a>
                <ul class="submenu">
                    <li><a href="#">公司简介</a></li>
                    <li><a href="#">团队介绍</a></li>
                </ul>
            </li>
        </ul>
    </nav>
    <script>
        document.querySelectorAll('.navbar > ul > li').forEach(function(li) {
            li.addEventListener('mouseenter', function() {
                this.classList.add('show');
            });
            li.addEventListener('mouseleave', function() {
                this.classList.remove('show');
            });
        });
    </script>
</body>
</html>

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