本文介绍如何在Layui框架中实现导航菜单的默认展开与选中项高亮效果。通过在对应列表项添加layui-nav-itemed类实现展开，在子项添加layui-this类实现高亮。该方法基于浏览器控制台调试得出，适用于常规Layui导航组件。
Layui导航默认展开与菜单选中高亮实现
具体操作如下：
<ul class="layui-nav layui-nav-tree custom-nav-tree" lay-filter="kitNavbar" kit-navbar>
<c:if test="${title_sys eq '内容管理' }">
<li class="layui-nav-item index1 layui-nav-itemed"><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><i class="fa fa-plug" aria-hidden="true"></i><span>宣传教育</span></a>
<dl class="layui-nav-child">
<dd class="layui-this">
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/jctt',icon:'',title:'基层头条',id:'73'}"><i class="layui-icon" aria-hidden="true"></i><span>基层头条</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/dyxf',icon:'',title:'党员先锋',id:'74'}"><i class="layui-icon" aria-hidden="true"></i><span>党员先锋</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/wdk',icon:'',title:'微党课',id:'75'}"><i class="layui-icon" aria-hidden="true"></i><span>微党课</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/remote_education',icon:'',title:'远程教育',id:'76'}"><i class="layui-icon" aria-hidden="true"></i><span>远程教育</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/constant/ad',icon:'',title:'广告轮播',id:'77'}"><i class="layui-icon" aria-hidden="true"></i><span>广告轮播</span></a>
</dd>
</dl>
</li>
<li class="layui-nav-item index4"><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><i class="fa fa-plug" aria-hidden="true"></i><span>每日一学</span></a>
<dl class="layui-nav-child">
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/mryx_type',icon:'',title:'学习类型管理',id:'200'}"><i class="layui-icon" aria-hidden="true"></i><span>学习类型管理</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/mryx',icon:'',title:'知识点管理',id:'201'}"><i class="layui-icon" aria-hidden="true"></i><span>知识点管理</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/mryx_publish',icon:'',title:'发布记录列表',id:'202'}"><i class="layui-icon" aria-hidden="true"></i><span>发布记录列表</span></a>
</dd>
</dl>
</li>
<li class="layui-nav-item index5"><a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><i class="fa fa-plug" aria-hidden="true"></i><span>每月一考</span></a>
<dl class="layui-nav-child">
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/quest_type_index',icon:'',title:'题库类型',id:'80'}"><i class="layui-icon" aria-hidden="true"></i><span>题库类型</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/quest_index',icon:'',title:'考题管理',id:'81'}"><i class="layui-icon" aria-hidden="true"></i><span>考题管理</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/quest_model_index',icon:'',title:'考卷模板',id:'82'}"><i class="layui-icon" aria-hidden="true"></i><span>考卷模板</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path %>/content/exam_index',icon:'',title:'考卷管理',id:'83'}"><i class="layui-icon" aria-hidden="true"></i><span>考卷管理</span></a>
</dd>
<dd>
<a href="javascript:;" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" kit-target data-options="{url:'<%=path%>/content/record_index',icon:'',title:'考试记录',id:'84'}"><i class="layui-icon" aria-hidden="true"></i><span>考试记录</span></a>
</dd>
</dl></li>
</c:if>
</ul>在首个宣传教育列表项（li）中增加 class 属性值为 layui-nav-itemed，同时在首个下拉选项（dd）中增加 class 属性值为 layui-this。
实现效果展示如下：
该结论源于本人通过点击对应导航，并在浏览器控制台检查渲染后的 class 属性得出。
上述关于 Layui 导航默认展开及菜单栏选中高亮设置的方案即为本文分享的全部內容，旨在为读者提供参考，并恳请支持本站。