el-menu递归实现多级菜单组件的示例
作者:Li_pk
本文主要介绍了el-menu使用递归组件实现多级菜单组件,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧
1. 效果:
2. 实现:
创建外层菜单AsideMenu.vue
组件和子菜单项AsideSubMenu.vue
组件,在AsideSubMenu
中进行递归操作。
AsideMenu.vue文件内容如下:
<template> <aside class="wrap"> <el-menu :default-active="activeMenu" router :class="'menu-left'" :default-openeds="openedsArr" text-color="#fff" > <AsideSubMenu :menuData="menuData"></AsideSubMenu> </el-menu> </aside> </template> <script> import AsideSubMenu from "./AsideSubMenu.vue"; export default { name: "AsideMenu", components: { AsideSubMenu, }, props: { menuData: { type: Array, }, }, computed: { activeMenu() { const route = this.$route; const { meta, path } = route; // 此处添加判断的原因见说明 if (meta.matchPath) { return meta.matchPath; } else { return path; } }, // 设置默认展开菜单项 openedsArr() { // const arr = this.menuData.map((item) => { // return item.title; // }); // return arr; return []; }, }, }; </script>
判断高亮状态的activeMenu方法中的判断matchPath属性可以让多个路由不同的页面匹配同一个菜单高亮状态,因为菜单高亮状态是根据路由地址匹配的。如果两个不同的路由页面想公用同一个菜单高亮状态(如详情页面和列表页)就可以使用该方法实现。在router文件里设置meta对象,添加matchPath属性设置为想要共用的高亮状态的页面的路由地址。(有点绕😂)
样式根据需求修改,示例中的样式如下(此处包含深浅两种主题的菜单样式):
<style scoped> aside { height: 100%; text-align: center; } .el-menu { padding: 16px; box-sizing: border-box; } /* ---------- 深色 ---------- */ .menu-left, .menu-left /deep/ .el-menu { min-height: 100%; background-color: #222653; } .menu-left .icon { width: 20px; margin-right: 9px; } .menu-left /deep/.el-submenu__title, .menu-left /deep/.el-menu-item { box-sizing: border-box; font-size: 14px; font-family: PingFangSC-Regular, PingFang SC; text-align: left; color: #b3c0e7 !important; background-color: #222653 !important; } .menu-left /deep/.el-submenu__title i { color: #b3c0e7 !important; } .menu-left /deep/.el-submenu__title { height: 54px; line-height: 54px; /* padding-left: 36px !important; */ } .menu-left /deep/ .el-menu-item { height: 52px; line-height: 52px; } .menu-left /deep/.el-submenu .el-menu-item { padding-left: 45px !important; } /* 外层高亮 */ .menu-left /deep/.el-submenu.is-active, .menu-left /deep/.el-submenu.is-active .el-menu-item, .menu-left /deep/.el-submenu.is-active .el-submenu__title, .menu-left /deep/.el-menu-item.is-active { background-color: #4880ff !important; } .menu-left /deep/.el-submenu.is-active { border-radius: 10px; overflow: hidden; } .menu-left /deep/ .el-menu-item.is-active { border-radius: 10px; } .menu-left /deep/ .el-menu--inline .el-menu-item.is-active, .menu-left /deep/ .el-submenu.noIcon { border-radius: 0; } .menu-left /deep/ .el-submenu.noIcon .el-submenu__title { padding-left: 45px !important; } .menu-left /deep/ .el-submenu.noIcon .el-menu-item { padding-left: 58px !important; } .menu-left /deep/.el-submenu.is-active > .el-submenu__title, .menu-left /deep/.el-submenu.is-active > .el-submenu__title i { color: #ffffff !important; } /* 内层高亮 */ .menu-left /deep/.el-menu-item:focus, .menu-left /deep/.el-menu-item:hover, .menu-left /deep/.el-menu-item.is-active { color: #ffffff !important; font-weight: 500; } .menu-left /deep/.el-menu-item.is-disabled { padding-left: 45px !important; color: #ffffff !important; } /* ---------- 浅色 ---------- */ .menu-left-light { height: 100%; background-color: #f8f8f8; } .menu-left-light .icon { width: 20px; margin-right: 9px; } .menu-left-light /deep/.el-submenu__title, .menu-left-light /deep/.el-menu-item { box-sizing: border-box; font-size: 16px; font-family: PingFangSC-Regular, PingFang SC; text-align: left; color: #333333; } .menu-left-light /deep/.el-submenu__title { height: 52px; line-height: 52px; padding-left: 56px !important; } .menu-left-light /deep/.el-submenu__title:hover { background-color: #ffffff !important; } .menu-left-light /deep/.el-submenu__icon-arrow { right: 85px; } .menu-left-light /deep/.el-submenu__title i { color: #333333; } .menu-left-light /deep/.el-menu-item { height: 40px; line-height: 40px; padding-left: 82px !important; border-left: 4px solid #ffffff; } .menu-left-light /deep/.el-menu-item:focus, .menu-left-light /deep/.el-menu-item:hover, .menu-left-light /deep/.el-menu-item.is-active { background: rgba(31, 65, 219, 0.1) !important; color: #1f41db !important; border-color: #1f41db; } .menu-left-light /deep/.el-menu-item.is-disabled { background: #ffffff !important; color: #333333 !important; } </style>
AsideMenu.vue文件内容如下:
<template> <div> <template v-for="item in menuData"> <el-submenu :key="item.path" v-if="item.children && item.children.length > 0" :index="item.path" :class="item.icon ? '' : 'noIcon'" > <template slot="title"> <img class="icon mr-r-10" :src=" curRoute.indexOf(item.path) != -1 ? item.iconActive : item.icon " /> <span>{{ item.title }}</span> </template> <AsideSubMenu :menuData="item.children"></AsideSubMenu> </el-submenu> <el-menu-item :key="item.id" v-else :index="item.path" :disabled="item.disabled" > <template slot="title"> <img class="icon mr-r-10" :src=" curRoute.indexOf(item.path) != -1 ? item.iconActive : item.icon " /> <span>{{ item.title }}</span> </template> </el-menu-item> </template> </div> </template>
判断如果有子菜单则进行遍历操作。同时此处根据是否有icon给el-submenu
动态添加了一个类名:class="item.icon ? '' : 'noIcon'"
,这么做是由于高亮状态下的.el-submenu添加了圆角效果,在存在多层子菜单嵌套的情况下如果不清除圆角效果则会出现问题(见下图)。这个状态下不好用选择器选中需要操作的元素,因此根据是否有icon这个区别进行了区分。如果是整个菜单都没有icon的情况的话,那暂时还没想好应对策略。😂
<script> import AsideSubMenu from "./AsideSubMenu.vue"; export default { name: "AsideSubMenu", components: { AsideSubMenu, }, props: { menuData: { type: Array, default: () => { return []; }, }, }, computed: { curRoute() { return this.$route.path; }, }, }; </script>
3. 使用组件:
- 添加路由配置;
- 引入并挂载组件;
- 传入菜单数据;
代码如下:
<template> <el-container class="container"> <el-aside width="320px"> <AsideMenu :menuData="menuData"></AsideMenu> </el-aside> <el-main> <keep-alive :exclude="[]"> <router-view></router-view> </keep-alive> </el-main> </el-container> </template> <script> import AsideMenu from '@/components/AsideMenu.vue'; export default { name: 'MenuTest', components: { AsideMenu }, data() { return { menuData: [ { title: '菜单一', path: '/menutest/menu1', icon: require('@/assets/icons/apply.svg'), iconActive: require('@/assets/icons/apply_active.svg'), children: [ { title: '子菜单一', path: '/menutest/menu1/menu1-1', // disabled: true, }, { title: '子菜单二', path: '/menutest/menu1/menu1-2' } ] }, { title: '菜单二', path: '/menutest/menu2', icon: require('@/assets/icons/apply.svg'), iconActive: require('@/assets/icons/apply_active.svg'), children: [ { title: '子菜单一', path: '/menutest/menu2/menu2-1' }, { title: '子菜单二', path: '/menutest/menu2/menu2-2', children: [ { title: '孙子菜单一', path: '/menutest/menu2/menu2-2/menu2-1-1' }, { title: '孙子菜单二', path: '/menutest/menu2/menu2-2/menu2-2-2' } ] }, { title: '子菜单三', path: '/menutest/menu2/menu2-3' } ] }, { title: '菜单三', path: '/menutest/menu3', icon: require('@/assets/icons/apply.svg'), iconActive: require('@/assets/icons/apply_active.svg'), } ] }; } }; </script> <style scoped> .container { min-height: 800px; } .el-main { padding: 32px 40px; box-sizing: border-box; background: #f5f5fa; overflow-y: auto; } </style>
示例中的路由配置如下:
{ path: "/menutest", name: "Menu", component: () => import("../views/MenuTest.vue"), redirect: "/menutest/menu1", children: [{ path: '/menutest/menu1', component: () => import("../views/menuPages/menu1.vue"), children: [{ path: '/menutest/menu1/menu1-1', component: () => import("../views/menuPages/menu1-1.vue"), }, { path: '/menutest/menu1/menu1-2', component: () => import("../views/menuPages/menu1-2.vue"), } ] }, { path: '/menutest/menu2', component: () => import("../views/menuPages/menu2.vue"), children: [{ path: '/menutest/menu2/menu2-1', component: () => import("../views/menuPages/menu2-1.vue"), }, { path: '/menutest/menu2/menu2-2', component: () => import("../views/menuPages/menu2-2.vue"), children: [{ path: '/menutest/menu2/menu2-2/menu2-1-1', component: () => import("../views/menuPages/menu2-1-1.vue"), }, { path: '/menutest/menu2/menu2-2/menu2-2-2', component: () => import("../views/menuPages/menu2-1-2.vue"), } ] }, { path: '/menutest/menu2/menu2-3', component: () => import("../views/menuPages/menu2-3.vue"), } ] }, { path: '/menutest/menu3', component: () => import("../views/menuPages/menu3.vue"), } ] }
到此这篇关于el-menu递归实现多级菜单组件的示例的文章就介绍到这了,更多相关el-menu多级菜单组件内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!