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导航栏上可以设置下拉菜单: 实例 <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <!-- Brand --> <a href="#">Logo</a> <!-- Links --> <ul> <li> <a href="#">Link 1</a> </li> <li> <a href="#">Link 2</a> </li> <!-- Dropdown --> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="#" id="navbardrop" data-toggle="dropdown"> Dropdown link </a> <div> <a href="#">Link 1</a> <a href="#">Link 2</a> <a href="#">Link 3</a> </div> </li> </ul> </nav> 完整代码 <!DOCTYPE html> <html> <head> <title>Bootstrap 实例(小白教程网 2d5.net)</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <nav class="navbar navbar-expand-sm bg-dark navbar-dark"> <!-- Brand --> <a href="#">Logo</a> <!-- Links --> <ul> <li> <a href="#">Link 1</a> </li> <li> <a href="#">Link 2</a> </li> <!-- Dropdown --> <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="#" id="navbardrop" data-toggle="dropdown"> Dropdown link </a> <div> <a href="#">Link 1</a> <a href="#">Link 2</a> <a href="#">Link 3</a> </div> </li> </ul> </nav> <br> <div> <h3>导航栏使用下拉菜单</h3> <p>导航栏上可以设置下拉菜单。</p> </div> </body> </html> 效果图 |
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