twitter-bootstrap 带有折叠菜单图标的 Bootstrap 导航栏 - 如何？
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Bootstrap navbar with collapsed menu icon - How to?
提问by lewis4u
On this bootstrap starter template:
在这个引导启动模板上：
when the browser gets narrow the navigation bar links/buttons collapse into one icon in top-right corner like this:
当浏览器变窄时，导航栏链接/按钮会折叠成右上角的一个图标，如下所示：
I would like to have this collapsed "icon" as default like on the picture above. So that the navbar links are available after the user clicks that top-right collapsed button.
我希望将这个折叠的“图标”作为默认设置，如上图所示。以便在用户单击右上角的折叠按钮后导航栏链接可用。
How to do that?
怎么做？
This is the source code of the template:
这是模板的源代码：
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Project name</a>
</div>
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a></li>
<li><a href="#about">About</a></li>
<li><a href="#contact">Contact</a></li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
<div class="container">
<div class="starter-template">
<h1>Bootstrap starter template</h1>
<p class="lead">Use this document as a way to quickly start any new project.<br> All you get is this text and a mostly barebones HTML document.</p>
</div>
</div><!-- /.container -->
回答by DMort
It's all in the CSS.
这一切都在 CSS 中。
See this post and check out the css column.
请参阅此帖子并查看 css 列。
Working Example:
工作示例：
.navbar .navbar-header {
float: none;
}
.navbar .navbar-toggle {
display: block;
}
.navbar .navbar-collapse.collapse {
display: none!important;
}
.navbar .navbar-nav {
float: none!important;
}
.navbar .navbar-nav > li {
float: none;
}
.navbar .navbar-collapse.collapse.in {
display: block !important;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<nav class="navbar navbar-inverse navbar-static-top">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Brand</a>
</div>
<div class="navbar-collapse collapse" id="navbar">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a>
</li>
<li><a href="#about">About</a>
</li>
<li><a href="#contact">Contact</a>
</li>
</ul>
</div>
</nav>