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法律研究使用 Bootstrap 向按钮添加下拉菜单
要向按钮添加下拉菜单，只需将按钮和下拉菜单包装到 .btn-group 中即可。
你可以尝试运行以下代码向按钮中添加下拉菜单 −
范例
<!DOCTYPE html> <html> <head> <title>Bootstrap Example</title> <link href = "/bootstrap/css/bootstrap.min.css" rel="stylesheet"> <script src = "/scripts/jquery.min.js"></script> <script src = "/bootstrap/js/bootstrap.min.js"></script> </head> <body> <div class = "btn-group"> <button type = "button" class = "btn btn-default dropdown-toggle" data-toggle = "dropdown"> Default <span class = "caret"></span> </button> <ul class = "dropdown-menu" role = "menu"> <li><a href = "#">Action</a></li> <li><a href = "#">Another action</a></li> <li><a href = "#">Something else here</a></li> <li class = "divider"></li> <li><a href = "#">Separated link</a></li> </ul> </div> <div class = "btn-group"> <button type = "button" class = "btn btn-primary dropdown-toggle" data-toggle = "dropdown"> Primary <span class = "caret"></span> </button> <ul class = "dropdown-menu" role = "menu"> <li><a href = "#">Action</a></li> <li><a href = "#">Another action</a></li> <li><a href = "#">Something else here</a></li> <li class = "divider"></li> <li><a href = "#">Separated link</a></li> </ul> </div> </body> </html>
更新日期： 12-Jun-2020
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