<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
<title>home</title>
</head>
<body>
<div id="app">
<el-container style="height: 1000px; border: 1px solid #eee">
<el-aside width="200px" style="background-color: rgb(238, 241, 246)">
<el-menu :default-openeds="['1', '3']">
<el-submenu index="1">
<template slot="title"><i class="el-icon-message"></i>导航一</template>
<el-menu-item-group>
<template slot="title">分组一</template>
<el-menu-item index="1-1">选项1</el-menu-item>
<el-menu-item index="1-2">选项2</el-menu-item>
</el-menu-item-group