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<!DOCTYPE html> <html> <head> <title>Bootstrap5 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <h2>徽章嵌入到按钮内</h2> <button type="button" class="btn btn-primary"> Messages <span class="badge bg-danger">4</span> </button> <button type="button" class="btn btn-danger"> Notifications <span class="badge bg-dark">7</span> </button> </div> </body> </html>
运行结果：