如何使用移动设备的引导程序使我的导航栏可折叠?我试过直接从引导程序网站使用代码,但它要么使我的导航栏完全消失,要么根本不起作用。任何帮助,将不胜感激。下面是我当前的导航栏。
<!-- Start Navigation -->
<nav>
<ul class="nav justify-content-center">
<li class="nav-item">
<a class="nav-link active" href="index.html">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="tarmac.html">Tarmac</a>
</li>
<li class="nav-item">
<a class="nav-link" href="paving.html">Paving</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Contact</a>
</li>
</ul>
</nav>
<!-- End Navigation -->
答案 0 :(得分:0)
你使用 Navs 组件,你必须使用 Bootstrap 中的 Navbar 组件:https://getbootstrap.com/docs/4.0/components/navbar/
然后您可以从导航栏组件复制/粘贴代码并修改它以制作您的导航栏,如下所示:
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<title>Hello, world!</title>
</head>
<body>
<!-- Start Navigation -->
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li class="nav-item active">
<a class="nav-link" href="index.html">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="tarmac.html">Tarmac</a>
</li>
<li class="nav-item">
<a class="nav-link" href="paving.html">Paving</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Contact</a>
</li>
</ul>
</div>
</nav>
<!-- End Navigation -->
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<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/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</body>
</html>
答案 1 :(得分:0)
正如您在 Bootstrap docs...
中看到的 <块引用>"导航栏需要一个包装 .navbar .navbar-expand{-sm|-md|-lg|-xl|-xxl} 用于响应式折叠"
因此请遵循响应式导航栏指南 in the docs..
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarToggler" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarToggler">
<ul class="nav justify-content-center">
<li class="nav-item">
<a class="nav-link active" href="index.html">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="tarmac.html">Tarmac</a>
</li>
<li class="nav-item">
<a class="nav-link" href="paving.html">Paving</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Contact</a>
</li>
</ul>
</div>
</nav>