用一点点额外 HTML 代码并加入下拉菜单插件的 JavaScript 插件即可。
导航菜单与下拉菜单使用相似的语法。默认情况下,列表项的锚与一些数据属性协同合作来触发带有 .dropdown-menu class 的无序列表。
向标签添加下拉菜单的步骤如下:
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例 - 带有下拉菜单的标签</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> <p>带有下拉菜单的标签</p> <ul class="nav nav-tabs"> <li class="active"><a href="#">Home</a></li> <li><a href="#">SVN</a></li> <li><a href="#">iOS</a></li> <li><a href="#">VB.Net</a></li> <li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#"> Java <span class="caret"></span> </a> <ul class="dropdown-menu"> <li><a href="#">Swing</a></li> <li><a href="#">jMeter</a></li> <li><a href="#">EJB</a></li> <li class="divider"></li> <li><a href="#">分离的链接</a></li> </ul> </li> <li><a href="#">PHP</a></li> </ul> </body> </html>
带有下拉菜单的标签
结果如下所示:
<ul class="nav nav-tabs"> ... <li role="presentation" class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false"> Dropdown <span class="caret"></span> </a> <ul class="dropdown-menu"> ... </ul> </li> ... </ul>
<ul class="nav nav-pills"> ... <li role="presentation" class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false"> Dropdown <span class="caret"></span> </a> <ul class="dropdown-menu"> ... </ul> </li> ... </ul>
步骤与创建带有下拉菜单的标签相同,只是需要把 .nav-tabs class 改为 .nav-pills,如下面的实例所示:
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例 - 带有下拉菜单的胶囊</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> <p>带有下拉菜单的胶囊</p> <ul class="nav nav-pills"> <li class="active"><a href="#">Home</a></li> <li><a href="#">SVN</a></li> <li><a href="#">iOS</a></li> <li><a href="#">VB.Net</a></li> <li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#"> Java <span class="caret"></span> </a> <ul class="dropdown-menu"> <li><a href="#">Swing</a></li> <li><a href="#">jMeter</a></li> <li><a href="#">EJB</a></li> <li class="divider"></li> <li><a href="#">分离的链接</a></li> </ul> </li> <li><a href="#">PHP</a></li> </ul> </body> </html>
带有下拉菜单的胶囊