我正在尝试使用Bootstrap 4实现Navbar.目前,当视口缩小到移动大小时,Navbar会正确折叠.但是,在尝试切换菜单时,没有任何反应. jsFiddle示例演示了此行为.我也附上了
HTML.
我采取的步骤：
>删除所有自定义CSS
>确保jQuery链接在Bootstrap JS文件之前
>页眉和页脚中的脚本标记
>从Bootstrap Docs复制并粘贴确切的示例(我得到相同的行为)
>确保在Chrome浏览器中使用JS
>使用WC3验证器验证的HTML
>当然,阅读有关此问题的各种帖子,但没有一个会导致解决方案
jsFiddle链接https://jsfiddle.net/u7v5jba9/
<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
解决方法
您需要按照
Getting Started Docs包含Popper.
请将这些用于脚本.
<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>
更新工作小提琴：https://jsfiddle.net/u7v5jba9/1/
建议：将来,请始终在浏览器中打开dev检查器控制台以查找任何错误消息.
