vue导航栏部分的动态渲染

根据公司项目的需求，使用的是element-ui的nav-menu组件实现动态渲染左侧导航条的功能，这里我只写到了四级菜单。
代码部分：

<el-menu class='el-menu-vertical-demo' :router='true' v-for='(item, index) in navMenu' :key='index'>
            <el-submenu v-if='item.childs' :index='item.name' :route = 'item.value' class='edit_wrapper' @mouseover.native="overShow" @mouseout.native="outHide">
                <template slot='title'>
                    <i :class='item.icon'></i>
                    <span slot='title'>{{item.alias}}</span>
                    <i class='iconfont icon-shenpi edit' v-show='haha'></i>
                </template>
                <el-submenu v-if='item1.childs' v-for= '(item1, index) in item.childs' :key='item1.name' :index='item1.name' :route='item1.value'>
                    <template slot='title'>
                        <i :class='item1.icon'></i>
                        <span slot='title'>{{item1.alias}}</span>
                    </template>
                    <el-submenu v-for= '(item2, index) in item1.childs' :key='item2.name' v-if='item2.childs' :index='item2.name' :route = 'item2.value'>
                        <template slot='title'>
                            <i :class='item2.icon'></i>
                            <span slot='title'>{{item2.alias}}</span>
                        </template>
                        <el-submenu v-for= '(item3, index) in item2.childs' :key='item3.name' v-if='item3.childs' ::index='item3.name' :route = 'item3.value'>
                            <template slot='title'>
                                <i :class='item3.icon'></i>
                                <span slot='title'>{{item3.alias}}</span>
                            </template>
                            <el-menu-item v-for= '(item4, index) in item3.childs' :key='item3.name' v-if='item4.childs == null' :index='item4.name' :route = 'item4.value'>
                                <span>{{item4.alias}}</span>
                            </el-menu-item>
                        </el-submenu>
                        <el-menu-item v-for= '(item3, index) in item2.childs' :key='item3.name' v-if='item3.childs == null' :index='item3.name' :route = 'item3.value'>
                            <span>{{item3.alias}}</span>
                        </el-menu-item>
                    </el-submenu>
                    <el-menu-item v-for= '(item2, index) in item1.childs' :key='item2.name' v-if='item2.childs == null' :index='item2.name' :route = 'item2.value'>
                        <span>{{item2.alias}}</span>
                    </el-menu-item>
                </el-submenu>
                <el-menu-item v-for= '(item1, index) in item.childs' :key='item1.name' v-if='item1.childs == null' :index='item1.name' :route = 'item1.value'>
                    <span>{{item1.alias}}</span>
                </el-menu-item>
            </el-submenu>
            <el-menu-item v-if='item.childs == null' :index='item.name' :route = 'item.value'>
                <i :class='item.icon'></i>
                <span slot='title'>{{item.alias}}</span>
            </el-menu-item>
          </el-menu>

数据部分：

navMenu: [{
          name: 'serveList',
          icon: 'iconfont icon-shezhi',
          alias: '金融服务目录',
          value: '',
          childs: [
            {
              name: 'channelManage',
              icon: '',
              alias: '渠道管理',
              value: '',
              childs: [
                {
                  name: 'channelManage_in',
                  icon: '',
                  alias: '渠道内部管理',
                  value: '',
                  childs: [
                    {
                      name: 'financial',
                      icon: '',
                      alias: '金融类',
                      value: '/serveManage/financial',
                    },
                    {
                      name: 'no_financial',
                      icon: '',
                      alias: '非金融类',
                      value: '/serveManage/no_financial',
                    },
                    {
                      name: 'query_class',
                      icon: '',
                      alias: '查询类',
                      value: '/serveManage/query_class',
                    },
                    {
                      name: 'square_class',
                      icon: '',
                      alias: '冲正类',
                      value: '/serveManage/square_class',
                    },
                  ]
                },
                {
                  name: 'process_services',
                  icon: '',
                  alias: '流程服务',
                  value: '/serveManage/process_services'
                },
                {
                  name: 'cooperation_services',
                  icon: '',
                  alias: '合作方服务',
                  value: '/serveManage/cooperation_services'
                },
              ]
            },
            {
              name: 'saveManage',
              icon: '',
              alias: '风险管理',
              value: '/serveManage/saveManage'
            }, {
              name: 'manageDecision',
              icon: '',
              alias: '管理决策',
              value: '/serveManage/manageDecision'
            }, {
              name: 'businessSupport',
              icon: '',
              alias: '业务支持',
              value: '/serveManage/businessSupport'
            }, {
              name: 'technicalSupport',
              icon: '',
              alias: '技术支持',
              value: '/serveManage/technicalSupport'
            }
          ]
        }, {
          name: 'serveRelation',
          icon: 'iconfont icon-shezhi',
          alias: '服务血缘关系',
          value: '/serveManage/serveRelation'
        }]

注意：因为含有childs的目录是没有路由的，所以可以把它的value值设为空。
效果展示：

这样我们就可以在其他页面引入该组件就可以了。