简单教程
提交运行
代码编辑器：
<meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="/static/lib/bootstrap/4.0.0/css/bootstrap.min.css"> <script src="/static/lib/jquery/3.3.1/jquery.min.js"></script> <script src="/static/lib/bootstrap/4.0.0/js/bootstrap.min.js"></script> <div class="container"> <h2>徽章嵌入到按钮内</h2> <button type="button" class="btn btn-primary"> 微信 <span class="badge badge-light">4</span> </button> <button type="button" class="btn btn-danger"> 通知 <span class="badge badge-light">7</span> </button> </div>
运行结果：