详解VUE Element-UI多级菜单动态渲染的组件

以下是组件代码：

<template>
 <div class="navMenu">

  <label v-for="navMenu in navMenus">
   <el-menu-item v-if="navMenu.childs==null&&navMenu.entity&&navMenu.entity.state==='ENABLE'"
          :key="navMenu.entity.id" :data="navMenu" :index="navMenu.entity.name" :route="navMenu.entity.value"
          disabled="">
    <i :class="navMenu.entity.icon"></i>
    <span slot="title">{{navMenu.entity.alias}}</span>
   </el-menu-item>

   <el-submenu v-if="navMenu.childs&&navMenu.entity&&navMenu.entity.state==='ENABLE'"
         :key="navMenu.entity.id" :data="navMenu" :index="navMenu.entity.name">
    <template slot="title">
     <i :class="navMenu.entity.icon"></i>
     <span> {{navMenu.entity.alias}}</span>
    </template>
    <NavMenu :navMenus="navMenu.childs"></NavMenu>
   </el-submenu>
  </label>

 </div>
</template>

<script>
 export default {
  name: 'NavMenu',
  props: ['navMenus'],
  data() {
   return {}
  },
  methods: {}
 }
</script>

<style scoped>

</style>

外部调用也比较简单

 <!--左侧菜单组件-->
   <el-menu
    default-active="0"
    class="el-menu-vertical-demo"
    @select="menuSelected"
    background-color="#F0F6F6"
    text-color="#3C3F41"
    active-text-color="black">
    <NavMenu :navMenus="leftMenus"></NavMenu>
   </el-menu>

最后看下效果：

值得一提的是，完成此菜单需要后端的配合，笔者这里后端给出的数据为：

{
  "entity": null,
  "childs": [
    {
      "entity": {
        "id": 1,
        "parentMenuId": 0,
        "name": "systemManage",
        "icon": "el-icon-message\r\n",
        "alias": "系统管理",
        "state": "ENABLE",
        "sort": 0,
        "value": null,
        "type": "NONE",
        "discription": "用于系统管理的菜单",
        "createUserId": 1
      },
      "childs": [
        {
          "entity": {
            "id": 3,
            "parentMenuId": 1,
            "name": "authManage",
            "icon": "el-icon-loading",
            "alias": "权限管理",
            "state": "ENABLE",
            "sort": 0,
            "value": "/system/auth",
            "type": "LINK",
            "discription": "用于权限管理的菜单",
            "createUserId": 1
          },
          "childs": null
        },
        {
          "entity": {
            "id": 4,
            "parentMenuId": 1,
            "name": "roleManage",
            "icon": "el-icon-bell",
            "alias": "角色管理",
            "state": "ENABLE",
            "sort": 1,
            "value": "/system/role",
            "type": "LINK",
            "discription": "用于角色管理的菜单",
            "createUserId": 1
          },
          "childs": null
        },
        {
          "entity": {
            "id": 2,
            "parentMenuId": 1,
            "name": "menuManage",
            "icon": "el-icon-edit",
            "alias": "菜单管理",
            "state": "ENABLE",
            "sort": 2,
            "value": "/system/menu",
            "type": "LINK",
            "discription": "用于菜单管理的菜单",
            "createUserId": 1
          },
          "childs": null
        },
        {
          "entity": {
            "id": 5,
            "parentMenuId": 1,
            "name": "groupManage",
            "icon": "el-icon-mobile-phone\r\n",
            "alias": "分组管理",
            "state": "ENABLE",
            "sort": 3,
            "value": "/system/group",
            "type": "LINK",
            "discription": "用于分组管理的菜单",
            "createUserId": 1
          },
          "childs": null
        }
      ]
    },
    {
      "entity": {
        "id": 6,
        "parentMenuId": 0,
        "name": "userManage",
        "icon": "el-icon-news",
        "alias": "用户管理",
        "state": "ENABLE",
        "sort": 1,
        "value": null,
        "type": "NONE",
        "discription": "用于用户管理的菜单",
        "createUserId": 1
      },
      "childs": [
        {
          "entity": {
            "id": 7,
            "parentMenuId": 6,
            "name": "accountManage",
            "icon": "el-icon-phone-outline\r\n",
            "alias": "帐号管理",
            "state": "ENABLE",
            "sort": 0,
            "value": "",
            "type": "NONE",
            "discription": "用于帐号管理的菜单",
            "createUserId": 1
          },
          "childs": [
            {
              "entity": {
                "id": 14,
                "parentMenuId": 7,
                "name": "emailManage",
                "icon": "el-icon-sold-out\r\n",
                "alias": "邮箱管理",
                "state": "ENABLE",
                "sort": 0,
                "value": "/content/email",
                "type": "LINK",
                "discription": "用于邮箱管理的菜单",
                "createUserId": 1
              },
              "childs": null
            },
            {
              "entity": {
                "id": 13,
                "parentMenuId": 7,
                "name": "passManage",
                "icon": "el-icon-service\r\n",
                "alias": "密码管理",
                "state": "ENABLE",
                "sort": 1,
                "value": "/content/pass",
                "type": "LINK",
                "discription": "用于密码管理的菜单",
                "createUserId": 1
              },
              "childs": null
            }
          ]
        },
        {
          "entity": {
            "id": 8,
            "parentMenuId": 6,
            "name": "integralManage",
            "icon": "el-icon-picture",
            "alias": "积分管理",
            "state": "ENABLE",
            "sort": 1,
            "value": "/user/integral",
            "type": "LINK",
            "discription": "用于积分管理的菜单",
            "createUserId": 1
          },
          "childs": null
        }
      ]
    },
    {
      "entity": {
        "id": 9,
        "parentMenuId": 0,
        "name": "contentManage",
        "icon": "el-icon-rank",
        "alias": "内容管理",
        "state": "ENABLE",
        "sort": 2,
        "value": null,
        "type": "NONE",
        "discription": "用于内容管理的菜单",
        "createUserId": 1
      },
      "childs": [
        {
          "entity": {
            "id": 10,
            "parentMenuId": 9,
            "name": "classifyManage",
            "icon": "el-icon-printer",
            "alias": "分类管理",
            "state": "ENABLE",
            "sort": 0,
            "value": "/content/classify",
            "type": "LINK",
            "discription": "用于分类管理的菜单",
            "createUserId": 1
          },
          "childs": null
        },
        {
          "entity": {
            "id": 11,
            "parentMenuId": 9,
            "name": "articleManage",
            "icon": "el-icon-star-on",
            "alias": "文章管理",
            "state": "ENABLE",
            "sort": 1,
            "value": "/content/article",
            "type": "LINK",
            "discription": "用于文章管理的菜单",
            "createUserId": 1
          },
          "childs": null
        },
        {
          "entity": {
            "id": 12,
            "parentMenuId": 9,
            "name": "commentManage",
            "icon": "el-icon-share",
            "alias": "评论管理",
            "state": "ENABLE",
            "sort": 2,
            "value": "/content/comment",
            "type": "LINK",
            "discription": "用于评论管理的菜单",
            "createUserId": 1
          },
          "childs": null
        }
      ]
    }
  ]
}

总结：当遇到多叉树或无限层级问题时，vue的递归组件是个比较好的解决方案，可以较大的节约开发时间降低开发成本。

以上所述是小编给大家介绍的VUE Element-UI多级菜单动态渲染的组件详解整合，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对我们网站的支持！