If you want the dropdown menu to expand upwards instead of downwards, change the <div> element with class="dropdown" to"dropup": Example <divclass="dropup"> Try it Yourself » Dropdown Text Dropdown button The.dropdown-item-textclass is used to add plain text to a dropdown item, ...
href="#" id="navbardrop" data-bs-toggle="dropdown"> Dropdown link </a> <div class="dropdown-menu"> <a class="dropdown-item" href="#">Link 1</a> <a class="dropdown-item" href="#">Link 2</a> <a class="dropdown-item" href="#">Link 3</a> </div> </li> </ul> ...
通过data 属性:向链接或按钮添加data-toggle="dropdown"来切换下拉菜单,如下所示: <div class="dropdown"> <a data-toggle="dropdown" href="#">下拉菜单(Dropdown)触发器</a> <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel"> ... </ul> </div> 1. 2. 3. 4. 5. 6. 如...
<ul class="dropdown-menu"> <div class="dropdown-item dropdown"> <a class="btn dropdown-toggle"> Dropdown link </a> <ul class="dropdown-menu"> <li><a class="dropdown-item">Action</a></li> <li><a class="dropdown-item">Another action</a></li> <li> <a class="dropdown...
<div class="dropdown-item dropdown"> <a class="btn dropdown-toggle"> Dropdown link </a> <ul class="dropdown-menu"> <li><a class="dropdown-item">Action</a></li> <li><a class="dropdown-item">Another action</a></li>
1.步骤(1)要做为下拉菜单的li增加class="dropdown"(2)为li中文字添加超链接书籍(3)li>ul添加(4)li>ul>li添加:Java核心技术或Java核心技术(5)各子菜单对就的div添加:Java核心技术:50元2.代码 dropdo
VS Bootstrap dropdown 方法/步骤 1 <buttonid="Province"type="button"class=""data-toggle="dropdown"aria-expanded="false">省/直辖市/自治区<spanclass=""></span></button><inputtype="hidden"id="HidPro"/><ulclass="dropdown-menu"id="Province"role="menu"aria-labelledby="Province"><li><a...
.dropdown { position: relative; } .dropdown-toggle:focus { outline: 0; } .dropdown-menu { position: absolute; top: 100%; left: 0; z-index: 1000; dKPqXnhUeydisplay: none; float: left; min-width: 160px; padding: 5px 0;
按钮和菜单需要包裹在.dropdown 的容器里,而作为被点击的元素按钮需要设置data-toggle="dropdown"才能有效。对于菜单部分,设置 class="dropdown-menu"才能自动隐藏并添加固定样式。设置 class="caret"表示箭头,可上可下。 基础应用 <scriptsrc="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script><scr...
'options'=>['aria-labelledby'=>'dropdownMenuButton'] ]); // Configuring the Bootstrap 5 Button Dropdown widget echoButtonDropdown::widget([ 'label'=>'Button Dropdown', 'dropdown'=>[ 'items'=>[ ['label'=>'Action','url'=>'#'], ...