vue+elementUI动态生成面包屑导航教程

效果如下所示：项目需要动态生成面包屑导航,并且首页可以点击.其余为路径显示<el-menu:u

效果如下所示：

项目需要动态生成面包屑导航,并且首页可以点击.其余为路径显示

<el-menu :unique-opened="true" router :default-active="$route.path" @select="handleSelect">
 <div class="user-menu-box" v-for="menu in menus" :key="menu.id">
 <el-menu-item v-if="!menu.child" :index="menu.path">
 <icon :name="menu.icon" :w="20" :h="20"></icon>
 <span slot="title" v-text="menu.name"></span>
 </el-menu-item>
 <el-submenu v-if="menu.child" :index="menu.path">
 <template slot="title">
 <icon :name="menu.icon" :w="20" :h="20"></icon>
 <span slot="title" v-text="menu.name"></span>
 </template>
 <el-menu-item-group>
 <el-menu-item v-for="subMenu in menu.child" :key="subMenu.id" v-text="subMenu.name"
 :index="subMenu.path"></el-menu-item>
 </el-menu-item-group>
 </el-submenu>
 </div>
</el-menu>

上面的代码是elementUI组件的样式,根据项目需要做了修改,搬运的时候根据项目自己改改

export default {
 data () {
 return {
 activeMenu: '',
 indexBreadcrumbs: [],
 menus: [{
 id: '1',
 name: '门户管理',
 icon: 'menhuguanli',
 path: '#2',
 child: [{
 id: '1-1',
 name: '轮播图',
 path: '/backstage/protaManage/turns'
 }, {
 id: '1-2',
 name: '基础数据',
 path: '/backstage/protaManage/basis'
 }, {
 id: '1-3',
 name: '分类管理',
 path: '/backstage/protaManage/classify'
 }, {
 id: '1-4',
 name: '内容发布',
 path: '/backstage/protaManage/content'
 }]
 }, {
 id: '2',
 name: '我的云盘',
 icon: 'yunpan',
 path: '/backstage/yunManage'
 }, {
 id: '3',
 name: '管理菜单',
 icon: 'shezhi',
 path: '/backstage/menusManage'
 }, {
 id: '4',
 name: '编辑板块',
 icon: 'fabuzhongxin',
 path: '/backstage/editPlate'
 }]
 }
 },
 watch: {
 $route () {
 this.handChange()
 }
 },
 computed: {
 breadcrumbList () {
 let breadcrumbs = []
 let menuList = this.menus
 this.indexBreadcrumbs.map(item => {
 for (let i = 0; i < menuList.length; i++) {
 if (item === menuList[i].path) {
 breadcrumbs.push(menuList[i])
 if (menuList[i].child) {
 menuList = menuList[i].child
 }
 break;
 }
 }
 })
 return breadcrumbs
 }
 },
 methods: {
 handChange () {
 this.$emit('hand-change', this.breadcrumbList)
 },
 handleSelect (index, indexPath) {
 this.indexBreadcrumbs = indexPath
 }
 },
 created () {
 this.handChange()
 }
}

上面的代码是模拟的数据,调用elememtUI的组件导航菜单的中的@select方法,有两个参数,可以自行打印

然后在computed中计算当前选中的是哪一部分,取到返回值,然后$emit传给父组件,

<el-breadcrumb separator-class="el-icon-arrow-right">
 <el-breadcrumb-item :to="{ path: '/backstage' }">首页</el-breadcrumb-item>
 <el-breadcrumb-item v-for="o in breadcrumbList" :key="o.id">{{o.name}}
 </el-breadcrumb-item>
 </el-breadcrumb>

父组件中取到子组件传过来的值后,直接渲染就行了