一般下拉菜单都是在导航条(navbar)和选项卡(tab)上实现。 实现原理: 在网页加载的时候,对所有带有datatoggle="dropdown"样式的元素进行事件绑定。 用户单击带有data-toggle="dropdown"样式的链接或按钮时,触发JavaScript事件代码。 Javascript事件代码在父容器(本例是:<li class="dropdown">)上加一个.open样式。
2,在选项中添加下拉菜单选项只要应用到 li元素的选项上添加dropdown下拉class就可以了 代码如下: 1 2 3 4 5 6 7 8 9 10 11 12 <ul class="nav nav-tabs"> ... <li role="presentation" class="dropdown"> <a class="dropdown-toggle " data-toggle="dropdown" href="#" role="button" aria...
Tip: You can also remove the .navbar-expand-md class to ALWAYS hide navbar links and display the toggler button.Navbar With DropdownLogo Link Link Link Dropdown Navbars can also hold dropdown menus:Example <li class="nav-item dropdown"> <a class="nav-link dropdown-toggle" href="#...
Bootstrap 5 Responsive Navbar with Multi-level Dropdowns This is a fully responsive multilevel dropdown (Treeview menu) navbar opened on hover. ⚠️ If you are using Boostrap 4 use v1.0.2 and read docs Preview BootNavbar Demo View Demo Requirement boostrap 5 animated.css (optional)...
'options'=>['aria-labelledby'=>'dropdownMenuButton'] ]); // Configuring the Bootstrap 5 Button Dropdown widget echoButtonDropdown::widget([ 'label'=>'Button Dropdown', 'dropdown'=>[ 'items'=>[ ['label'=>'Action','url'=>'#'], ...
至此,navbar-header组件我们就弄清楚了,这是一个响应式布局,在pc端,navbar-header只显示品牌文字,在移动端,navbar-header将独占整个导航栏navbar,其他部分将被隐藏。 3.3继续来看navbar-collapse collapse组件 源码: /**由于.navbar-collapse,.navbar-collapse.in,.collapse在(@meida min-width:768px)pc端均有...
Navbar links must have resolvable id targets. For example, a<a href="#home">home</a>must correspond to something in the DOM like<div id="home"></div>. Non-visible target elements ignored Target elements that are not visible will be ignored and their corresponding nav items will never ...
li><liclass="nav-item dropdown"><aclass="nav-link dropdown-toggle"href="#"id="navbarDropdown"role="button"data-toggle="dropdown"aria-haspopup="true"aria-expanded="false">Dropdown</a><divclass="dropdown-menu"aria-labelledby="navbarDropdown"><aclass="dropdown-item"href="#">Action<...
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false"><span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></...
与基本样式不同的是,下拉按钮需要增加“.dropdown-toggle-split”类。 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 <divclass="btn-group"> <!-- 普通按钮 --> <button type="button"class="btn btn-danger">Action</button> <!-- 下拉按钮 --> ...