我正在尝试使用Bootstrap 4实现导航栏。当前,当视口缩小到移动尺寸时,导航栏会正确折叠。但是,当尝试切换菜单时,没有任何反应。jsFiddle示例演示了此行为。我也附上了HTML。
我已采取的步骤:
<title> Site title </title> <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" /> <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" /> <body> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="#"> <i class="fa fa-globe" aria-hidden="true"></i> Brand Name </a> <button class="navbar-toggler collapsed" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation"> <i class="fa fa-angle-double-down"></i> </button> <div class="navbar-collapse collapse" id="navbarSupportedContent"> <ul class="navbar-nav mr-auto"> <li class="nav-item"><a href="#" class="nav-link ">Link 1</a></li> <li class="nav-item"><a href="#" class="nav-link ">Link 2</a></li> <li class="nav-item"><a href="#" class="nav-link">Link 3</a></li> </ul> <ul class="navbar-nav"> <li class="nav-item"><a href="#" class="nav-link ">Sign In</a></li> <li class="nav-item"><a href="#" class="nav-link ">Register</a></li> <li class="nav-item"><a href="#" class="nav-link ">Log Out</a></li> </ul> </div> </nav> </div> <div class="container"> <nav class="navbar navbar-inverse fixed-bottom text-center"> <h6 class="text-light text-center">Footer</h6> </nav> </div> <!-- Scripts --> <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script> </body>
提前致谢
您需要根据“ 入门文档”包括Popper 。
请改用这些脚本。
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script>
建议:以后,请始终在浏览器中打开开发人员检查器控制台以查找任何错误消息。