Vue动态面包屑功能的实现方法

<template>
 <div class="example-container">
  <el-breadcrumb separator="/">
   <el-breadcrumb-item
    v-for="(item,index) in breadList"
    :key="index"
    :to="{ path: item.path }"
   >{{item.name}}</el-breadcrumb-item>
  </el-breadcrumb>
 </div>
</template>
<script>
export default {
 name: "Example",
 data() {
  return {
   breadList: [{
     name: "首页",
     path: "/home"
    }, {
     name: "系统设置",
     path: "/setting"
    }, {
     name: "用户管理",
     path: "/setting/usermanage"
    }]
  };
 }
};
</script>

const router = new Router({
 routes: [{
   path: '/example',
   name: 'example',
   component: Example,
   meta: {
    breadList: [{
      name: "首页",
      path: "/home"
     }, {
      name: "系统设置",
      path: "/setting"
     }, {
      name: "用户管理",
      path: "/setting/usermanage"
     }]
   }
  }
 ]
});
export default router;

<template>
 //...省略
</template>
<script>
export default {
 name: "Example",
 computed: {
  breadList() {
   return this.$route.meta.breadList || [];
  }
 }
};
</script>

//Breadcrumb.vue
<script>
export default {
 data() {
  return {
   breadList: [] // 路由集合
  };
 },
 watch: {
  $route() {
   this.getBreadcrumb();
  }
 },
 methods: {
  isHome(route) {
   return route.name === "home";
  },
  getBreadcrumb() {
   let matched = this.$route.matched;
   //如果不是首页
   if (!this.isHome(matched[0])) {
    matched = [{ path: "/home", meta: { title: "首页" } }].concat(matched);
   }
   this.breadList = matched;
  }
 },
 created() {
  this.getBreadcrumb();
 }
};
</script>

const router = new Router({
 routes: [
  {
   path: '/',
   redirect: '/home'
  },
  {
   path: '/home',
   name: 'home',
   component: Home,
   meta: { title: '首页' }
  },
  {
   path: '/setting',
   name: "setting",
   component: () => import('./views/setting/Setting.vue'),
   redirect: '/setting/user',
   meta: { title: '系统设置' },
   children: [{
    path: 'user',
    component: () => import('./views/setting/UserMange.vue'),
    name: 'usermanage',
    meta: { title: '用户管理' }
   }, {
    path: 'message',
    component: () => import('./views/setting/MesMange.vue'),
    name: 'mesmanage',
    meta: { title: '短信管理' }
   }]
  },
  {
   path: '/example',
   name: 'example',
   component: Example,
   meta: { title: '综合实例' }
  }
 ]
});
export default router;