Bootstrap 4 中下拉菜单 dropdown 的默认触发方式是鼠标点击,但是一般情况下,用在导航栏 navbar 中时,我们需要实现下拉菜单 dropdown 的触发方式改为鼠标浮动触发,其实很简单,添加两行自定义的 css 代码即可,具体如下: .dropdown:hover>.dropdown-menu { display: block; } .dropdown>.dropdown-toggle:active...
$('.dropdown-toggle').dropdown() 1. 实例 在导航栏内 下面的实例演示了在导航栏内的下拉菜单的用法: 实例 <nav class="navbar navbar-default" role="navigation"> <div class="container-fluid"> <div class="navbar-header"> <a class="navbar-brand" href="#">菜鸟教程</a> </div> <div>...
-- Dropdown --> <li class="nav-item dropdown" style="margin-top: 10px"> <a class="nav-link dropdown-toggle h5" href="#" id="navbardrop" data-toggle="dropdown">二级下拉菜单 </a> <div class="dropdown-menu"> <a class="dropdown-item" href="#">Link 1</a> <a class="...
It appears like "ul" listing is dropped out from dropdown items ( See Bootstrap 4 alpha version). "ul" listing would be a great feature to have especially when the dropdown needs to be extended and to have sub-dropdowns. Here attached ar...
.dropdown-header 类用于在下拉菜单中添加标题; .disabled 类禁用下拉菜单; .dropdown-menu 类后添加 .dropdown-menu-right 类 让下拉菜单右对齐 向上弹出的下拉菜单.dropup类: 垂直导航 .flex-column 类用于创建垂直导航: 垂直导航栏 删除.navbar-expand-xl|lg|md|sm 类 变化为 ->垂直导航栏; ...
/**设置菜单样式 写法(navbar-nav>li>a) **/ #kq_header .navbar-kq .navbar-nav>li>a{ height:90px; /* background-color: orange; */ /**居中显示**/ display: flex; justify-content:center; align-items:center; margin-right: 10px; ...
The .dropdown-backdrop element isn’t used on iOS in the nav because of the complexity of z-indexing. Thus, to close dropdowns in navbars, you must directly click the dropdown element (or any other element which will fire a click event in iOS)....
在Bootstrap 4中,可以使用以下方法来实现自动关闭下拉菜单上的子菜单: 使用data属性:在父级下拉菜单的<a>标签上添加data-toggle="dropdown"属性,同时在子菜单的<a>标签上添加data-toggle="dropdown"属性。这样点击子菜单时,父级下拉菜单会自动关闭。
navbar-nav navbar-right"> Link dropdown">...-- /.container-fluid --> nav> 2、引入CSS和JavaScript文件 要使上面的代码正常工作,您需要引入Bootstrap的CSS和JavaScript文件。..." href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> 引入Bootstrap的JavaScript....
1.将多层下拉菜单添加到Bootstrap 4导航栏组件。 <navclass="navbar navbar-expand-lg navbar-dark bg-dark"><aclass="navbar-brand"href="#">Navbar</a><buttonclass="navbar-toggler"type="button"data-toggle="collapse"data-target="#navbarNavDropdown"aria-controls="navbarNavDropdown"aria-expande...