激活导航状态
您可以在激活状态的胶囊式导航和列表导航中放置徽章。通过使用 <span class="badge"> 来激活链接，如下面的实例所示：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>Bootstrap历练实例：激活导航的状态</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<link rel="stylesheet" href="bootstrap-3.3.5-dist/css/bootstrap.min.css" />
</head>
<body>
<div style="padding:100px">
<ul class="nav nav-pills">
<li class="active"><a href="#">Html5<span class="badge">56</span></a></li>
<li><a href="#">Css3</a></li>
<li><a href="#">Bootstrap<span class="badge">6</span></a></li>
</ul>
<br /><br />
<ul class="nav nav-pills nav-stacked">
<li class="active"><a href="#">Html5<span class="badge">56</span></a></li>
<li><a href="#">Css3</a></li>
<li><a href="#">Bootstrap<span class="badge">6</span></a></li>
</ul>
</div>
<script src="jQuery/jquery-2.1.4.js"></script>
<script src="bootstrap-3.3.5-dist/js/bootstrap.min.js"></script>
</body>
</html>