运行截图如下；
代码如下：
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <title>CN_TEST1</title>
- <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
-
- <!-- bootstrap css核心文件-->
- <link rel="stylesheet" href="bootstrap-4.4.1-dist/css/bootstrap.min.css">
- <!-- bootstrap使用到了jquery，需要提前引用-->
- <script src="js/jquery-3.5.1.min.js"></script>
- <!-- 弹窗、提示、下拉菜单-->
- <script src="bootstrap-4.4.1-dist/js/bootstrap.bundle.js"></script>
- <!-- bootstrap核心文件-->
- <script src="bootstrap-4.4.1-dist/js/bootstrap.min.js"></script>
-
- </head>
- <body>
- <div class="container-fluid">
-
- <h1>测试<span class="badge badge-primary">primary</span></h1>
- <h1>测试<span class="badge badge-danger">danger</span></h1>
- <h2>测试<span class="badge badge-secondary">secondary</span></h2>
- <h2>测试<span class="badge badge-success">success</span></h2>
- <h3>测试<span class="badge badge-info">info</span></h3>
- <h3>测试<span class="badge badge-light">light</span></h3>
- <h4>测试<span class="badge badge-warning">warning</span></h4>
- <h4>测试<span class="badge badge-primary">primary</span></h4>
- <h5>测试<span class="badge badge-dark">dark</span></h5>
- <h6>测试<span class="badge badge-primary">primary</span></h6>
- <h6>测试<span class="badge badge-danger">danger</span></h6>
-
- <br/>
- <span class="badge badge-pill badge-danger">danger</span>
- <span class="badge badge-pill badge-primary">primary</span>
- <br/>
- <button type="button" class="btn btn-primary">
- Message <span class="badge badge-info">4</span>
- </button>
-
- </div>
- </body>
- </html>
要注意的地方：
①badge为徽章，标签，同样要先要在class中，标名他是badge，然后再设置他的其他属性。
