Wil*_*ord 3 html css twitter-bootstrap bootstrap-4
我正在自学网络开发,我认为这比开始我自己的个人网页更好.
我遇到了使用Bootstrap 4和导航栏的问题.
我可以获取列表,并在窗口收缩时显示图标,但我无法扩展或切换崩溃.我甚至复制并粘贴了一些来自bootstrap文档的代码,看看我做错了什么,即使这样也行不通.
我已经试过firefox和chrome,两者都有,我仍然无法用图标按钮切换崩溃.
这是代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="description" content="Heath's Personal Website">
<meta name="keywords" content="heath, blandford, heath blandford">
<meta name="author" content="heath blandford">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!--import bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<!-- import google fonts lobster and open sans -->
<link href="https://fonts.googleapis.com/css?family=Lobster|Open+Sans" rel="stylesheet">
</head>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="#">navbar</a>
<!-- Navbar brand yo -->
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTop" aria-controls="navbar" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarTop">
<ul class="navbar-nav mr-auto">
<li class="nav-item"><a class="nav-link" href="#about">About</a> </li>
<li class="nav-item"><a class="nav-link" href="#portfolio">Services</a> </li>
<li class="nav-item"><a class="nav-link" href="#contact">Contact</a> </li>
<li class="nav-item"><a class="nav-link" href="#social">Social Media</a> </li>
</ul>
</div>
</nav>
<body>
</body>
</html>Obs*_*Age 12
虽然您已导入Bootstrap CSS,但您忽略了导入所需的JavaScript.
导入Bootstrap的JavaScript和所需的依赖项(jQuery和Popper.JS)将导致导航正确切换.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.6/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
这可以在以下内容中看到:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="description" content="Heath's Personal Website">
<meta name="keywords" content="heath, blandford, heath blandford">
<meta name="author" content="heath blandford">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!--import bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.6/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<!-- import google fonts lobster and open sans -->
<link href="https://fonts.googleapis.com/css?family=Lobster|Open+Sans" rel="stylesheet">
</head>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<a class="navbar-brand" href="#">navbar</a>
<!-- Navbar brand yo -->
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTop" aria-controls="navbar" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarTop">
<ul class="navbar-nav mr-auto">
<li class="nav-item"><a class="nav-link" href="#about">About</a> </li>
<li class="nav-item"><a class="nav-link" href="#portfolio">Services</a> </li>
<li class="nav-item"><a class="nav-link" href="#contact">Contact</a> </li>
<li class="nav-item"><a class="nav-link" href="#social">Social Media</a> </li>
</ul>
</div>
</nav>
<body>
</body>
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