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在使用vue做动态菜单时，菜单的层级不确定，需要递归实现。vue中通过递归组件来实现
如果，el-submenu的递归实现 代码如下： 1. 上递归组件（此组件自己调用了自己） <template>
<div>
<template v-for='menu in menuList'>
<!-- 如果当前有子菜单，则显示 el-submenu ，在el-subment 里调用 递归组件 -->
<el-submenu
v-if='menu.children.length>0'
:index='menu.name'
:key="menu.id"
>
<template slot="title" >
<i :class="menu.icon"></i>
pw_menu.name
</template>
<!-- 调用自身 此处是重点-->
<MenuTree :menuList='menu.children'></MenuTree>
</el-submenu>
<!-- 如果没有子菜单，则显示当前内容 -->
<el-menu-item
v-else
:index='menu.url'
:key='menu.id'
>
<i :class="menu.icon"></i>
pw_menu.name
</el-menu-item>
</template>
</div>
</template>
<script>
export default {
name: "MenuTree",
props: {
menuList: {
type: Array,
required: false
}
}
}
</script>
<style scoped>
</style>2.子组件菜单（Menus）--调用递归组件<template>
<el-scrollbar wrap-class="scrollbar-wrapper">
<el-menu
router
mode="vertical"
background-color="#551A8B"
text-color="#FFFFFF"
active-text-color="#409EFF"
v-if="menuList"
>
<!-- <sidebar-item v-for="menu in menuList" :key="menu.id" :item="menu" />-->
<MenuTree :menuList="menuList"></MenuTree>
</el-menu>
</el-scrollbar>
</template>
<script>
import MenuTree from "./MenuTree";
export default {
name:'Menus',
components: {
MenuTree,
},
props:{
menuList: {
type: Array,
required: false
}
}
}
</script>
<style >
a {
display: inline-block;
width: 100%;
overflow: hidden;
}
.el-menu {
border: none;
height: 100%;
width: 100% !important;
}
.is-active > .el-submenu__title{
color: #f4f4f5!important;
}
</style>3.父组件(App.Vue)引用<template>
<el-container>
<el-header>
XXXXXX
</el-header>
<el-container>
<el-aside >
<Menus :menuList="menuList"></Menus>
</el-aside>
<el-main>
<router-view></router-view>
</el-main>
</el-container>
</el-container>
</template>
<script>
import Menus from "./views/Menus";
export default {
name: 'app',
components: {
Menus,
},
props: {
menuList: {
type: Array,
required: false
}
},
mounted(){
this.axios.get('/menu/list')
.then(resp => {
this.menuList = resp.data.menuList;
})
}
}
</script>
<style>
.el-header {
background-color: #0000AA;
color: #ffffff;
line-height: 60px;
font-size: 28px;
}
.el-aside {
background-color: #e3e3e3;
width: 200px !important;
}
body .el-table th.gutter{
display: table-cell!important;
}
body .el-table colgroup.gutter {
display: table-cell !important;
}
</style>4.总结 递归组件得重中之重，父组件与子组件、递归组件中都有共同的props，传值的过程：父组件menuList --> 菜单组件menuList --> 递归组件使用menuList 原文：https://www.cnblogs.com/theworld/p/12077418.html |
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