1.运行效果如图所示
2.实现代码如下
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>徽章</title> <!-- 最新版本的 Bootstrap 核心 CSS 文件 --> <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh5u" crossorigin="anonymous"> <!-- 可选的 Bootstrap 主题文件（一般不用引入） --> <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous"> </head> <body> <a href="#">Inbox <span class="badge">42</span></a> <div class="navbar navbar-default" role="navigation"> <div class="navbar-header"> <a href="##" class="navbar-brand">xx网</a> </div> <ul class="nav navbar-nav"> <li class="active"><a href="##">网站首页</a></li> <li><a href="##">系列教程</a></li> <li><a href="##">名师介绍</a></li> <li><a href="##">成功案例<span class="badge">23</span></a></li> <li><a href="##">关于我们</a></li> </ul> </div> <ul class="nav nav-pills"> <li class="active"><a href="#">Home <span class="badge">42</span></a></li> <li><a href="#">Profile</a></li> <li><a href="#">Messages <span class="badge">3</span></a></li> </ul> <br/> <ul class="nav nav-pills nav-stacked" > <li class="active"> <a href="#"> <span class="badge pull-right">42</span> Home </a> </li> <li><a href="#">Profile</a></li> <li> <a href="#"> <span class="badge pull-right">3</span> Messages </a> </li> </ul> <br/> <button class="btn btn-primary" type="button"> Messages <span class="badge">4</span> </button> <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script> <!-- 最新的 Bootstrap 核心 JavaScript 文件 --> <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script> </body> </html>
