1.效果：
2.html 代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>layui</title>
<meta name="renderer" content="webkit">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link rel="stylesheet" href="static/layui/css/layui.css" rel="external nofollow" media="all">
<!-- 注意：如果你直接复制所有代码到本地，上述css路径需要改成你本地的 -->
<style type="text/css">
.downpanel .layui-select-title span {
line-height: 38px;
}
/*继承父类颜色*/
.downpanel dl dd:hover {
background-color: inherit;
}
</style>
<style type="text/css">
body {
height: 100%;
width: 100%;
background-size: cover;
margin: 0 auto;
}
td {
font-size: 12px !important;
}
.layui-form-checkbox span {
height: 30px;
}
.layui-field-title {
border-top: 1px solid white;
}
table {
width: 100% !important;
}
</style>
</head>
<body>
<form class="layui-form">
<div class="layui-form-item">
<label class="layui-form-label">文章栏目</label>
<div class="layui-input-inline">
<div class="layui-unselect layui-form-select downpanel">
<div class="layui-select-title">
<span class="layui-input layui-unselect" id="treeclass">选择栏目</span>
<input type="hidden" name="selectID" value="0">
<i class="layui-edge"></i>
</div>
<dl class="layui-anim layui-anim-upbit">
<dd>
<ul id="classtree"></ul>
</dd>
</dl>
</div>
</div>
</div>
</form>
<script src="/UploadFiles/2021-04-02/layui.js">
以上这篇Layui tree 下拉菜单树的实例代码就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。