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老师批语：
标准的下拉菜单：
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <link rel="stylesheet" href="lib/css/bootstrap.css"> <title>标准的下拉菜单</title> </head> <body> <div class="dropdown"> <button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true"> 全栈开发 <span class="caret"></span> </button> <ul class="dropdown-menu" aria-labelledby="dropdownMenu1"> <!-- class="dropdown-header" 标题 --> <li class="dropdown-header">前端开发</li> <li><a href="#">HTML/HTML5</a></li> <li><a href="#">CSS/CSS3</a></li> <!-- class="disabled" 禁用 --> <li class="disabled"><a href="#">JavaScript</a></li> <li role="separator" class="divider"></li> <!-- class="dropdown-header" 标题 --> <li class="dropdown-header">前端框架</li> <li><a href="#">jQuery</a></li> <li><a href="#">bootstrap</a></li> <li><a href="#">node.js</a></li> <li><a href="#">vue.js</a></li> <li role="separator" class="divider"></li> <!-- class="dropdown-header" 标题 --> <li class="dropdown-header">后端开发</li> <li><a href="#">PHP</a></li> <li><a href="#">MYSQL</a></li> <!-- class="disabled" 禁用 --> <li class="disabled"><a href="#">ThinkPHP</a></li> </ul> </div> <script src="lib/js/jquery.js"></script> <script src="lib/js/bootstrap.js"></script> </body> </html>
点击 "运行实例" 按钮查看在线实例
分裂式下拉菜单：
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <link rel="stylesheet" href="lib/css/bootstrap.css"> <title>分裂式下拉菜单</title> </head> <body> <div class="btn-group"> <button type="button" class="btn btn-danger">全栈开发</button> <button type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown"> <span class="caret"></span> </button> <ul class="dropdown-menu"> <li class="dropdown-header">前端开发</li> <li><a href="#">HTML/HTML5</a></li> <li><a href="#">CSS/CSS3</a></li> <li class="disabled"><a href="#">JavaScript</a></li> <li role="separator" class="divider"></li> <li class="dropdown-header">前端框架</li> <li><a href="#">jQuery</a></li> <li><a href="#">bootstrap</a></li> <li><a href="#">node.js</a></li> <li><a href="#">vue.js</a></li> <li role="separator" class="divider"></li> <li class="dropdown-header">后端开发</li> <li><a href="#">PHP</a></li> <li><a href="#">MYSQL</a></li> <li class="disabled"><a href="#">ThinkPHP</a></li> </ul> </div> <script src="lib/js/jquery.js"></script> <script src="lib/js/bootstrap.js"></script> </body> </html>
点击 "运行实例" 按钮查看在线实例
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