本文实例为大家分享了layui实现三级导航菜单的具体代码，供大家参考，具体内容如下
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<title>.Net海</title>
<link href="~/layui-v2.2.5/layui-v2.2.5/layui/css/layui.css" rel="stylesheet" /> //注意路劲
<style>
ol li a {
background-color: rgba(0,0,0,1) !important;
}
.three_this {
background-color: #808080 !important;
}
</style>
</head>
<body class="layui-layout-body">
<div class="layui-layout layui-layout-admin">
<div class="layui-header">
<div class="layui-logo">layui 后台布局</div>
<ul class="layui-nav layui-layout-left">
<li class="layui-nav-item"><a href="">控制台</a></li>
<li class="layui-nav-item"><a href="">商品管理</a></li>
<li class="layui-nav-item"><a href="">用户管理</a></li>
<li class="layui-nav-item">
<a href="javascript:;" >日常</a>
<dl class="layui-nav-child">
<dd><a href="">邮件管理</a></dd>
<dd><a href="">消息管理</a></dd>
<dd><a href="">授权管理</a></dd>
</dl>
</li>
</ul>
<ul class="layui-nav layui-layout-right">
<li class="layui-nav-item">
<a href="javascript:;" >
<img src="~/images/tb.png" class="layui-nav-img" />
.Net海
</a>
<dl class="layui-nav-child">
<dd><a href="">基本资料</a></dd>
<dd><a href="">安全设置</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="">退出</a></li>
</ul>
</div>
<div class="layui-side layui-bg-black">
<div class="layui-side-scroll">
<ul class="layui-nav layui-nav-tree" lay-filter="test">
<li class="layui-nav-item layui-nav-itemed">
<a class="" href="javascript:;" >所有商品</a>
<dl class="layui-nav-child">
<dd>
<a href="javascript:;" class="menu_three ">列表一</a>
<ol class="layui-nav-child" style="display: none;">
<li><a href="javascript:;" >三级列表一</a></li>
<li><a href="javascript:;" >三级列表二</a></li>
<li><a href="javascript:;" >三级列表三</a></li>
<li><a href="">超链接</a></li>
</ol>
</dd>
<dd><a href="javascript:;" class="menu_three">列表二</a>
<ol class="layui-nav-child" style="display: none;">
<li><a href="javascript:;" >三级列表一</a></li>
<li><a href="javascript:;" >三级列表二</a></li>
<li><a href="javascript:;" >三级列表三</a></li>
<li><a href="">超链接</a></li>
</ol>
</dd>
<dd><a href="javascript:;" >列表三</a></dd>
<dd><a href="">超链接</a></dd>
</dl>
</li>
<li class="layui-nav-item"><a href="">云市场</a></li>
<li class="layui-nav-item"><a href="">发布商品</a></li>
</ul>
</div>
</div>
<div class="layui-body">
<!-- 内容主体区域 -->
<div style="padding: 15px;">内容主体区域</div>
</div>
<div class="layui-footer">
<!-- 底部固定区域 -->
© layui.com - 底部固定区域
</div>
</div>
//注意路劲
<script src="~/layui-v2.2.5/layui-v2.2.5/layui/layui.js"></script>
<script>
//JavaScript代码区域
layui.use(['element', 'jquery'], function () {
var element = layui.element, $ = layui.jquery;
$(".menu_three").on("click", function () {
$(this).next().toggle();
$.each($(this).parent().siblings(), function (i, e) {
$(e).find("ol").hide();;
});
})
$("ol").on("click", "li a", function () {
$.each($(this).parent().siblings(), function (i, e) {
$(e).find("a").removeClass('three_this')
});
$(this).addClass('three_this'); // 添加当前元素的样式
})
});
</script>
</body>
</html>
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