vue3使用vue-router嵌套多级路由的方法

import { createRouter, createWebHistory, type RouteRecordRaw } from 'vue-router'
import HomeView from '../views/HomeView.vue'
const routes: RouteRecordRaw[] = [
  {
    path: '/',
    redirect: '/home',
  },
  {
    path: '/home',
    name: 'Homeindex',
    component: () => import('../views/Home/index.vue'),
    meta: {
      title: 'Home Page',
      roles: ['admin', 'admin1']
    },
    children: [
      {
        path: 'tigerhhzz',
        name: 'Tigerhhzz',
        component: () => import('@/views/Home/Tigerhhzz.vue'),
        // 也可以使用props传参方式接收传来的参数
        props: (propsRouter) => {
          // console.log('props >router', propsRouter)
          // 可以return query 也可以return params支持两种传参方式
          return propsRouter.query
        },
        // 多级嵌套 建议用query传参
        children: [
          {
            path: 'childA',
            name: 'ChildA',
            component: () => import('@/views/Home/ChildA.vue'),
          },
        ]
      },
      {
        path: 'tigerhhzzb/:id/:title', // 提前定义params参数（可以定义多个）
        name: 'Tigerhhzzb',
        component: () => import('@/views/Home/Tigerhhzzb.vue'),
      },
    ]
  },
]
export const router = createRouter({
  // 路由的history模式，共有三种模式，
  // createWebHistory、createWebHashHistory、createMemoryHistory
  // history: createWebHashHistory(),
  history: createWebHistory(),
  // 路由配置
  routes,
  // 是否严格匹配路由
  strict: true,
  // 路由跳转完成后，页面滚动行为
  scrollBehavior: () => ({ left: 0, top: 0 }),
})

import './assets/main.css'
import { createApp } from 'vue'
import { createPinia } from 'pinia'
import App from './App.vue'
import {router} from './router/index'
const app = createApp(App)
app.use(createPinia())
app.use(router)
app.mount('#app')

<script>
import { defineComponent } from 'vue'
 // vue3.0版本语法
export default defineComponent({
  name: 'App',
})
</script>
<template>
  <RouterView />
</template>
<style>
</style>

<template>
  <div class="home">
    <h2>首页{{ title }}</h2>
    <!-- 模拟有权限时显示 -->
    <div v-if="roles.includes(role)">
      <h2>嵌套路由</h2>
      <router-link to="/home/tigerhhzz">push跳转到/home/tigerhhzz页面</router-link>
      <br>
      <!-- 加了/就要写全 /home/lxb -->
      <router-link replace to="/home/tigerhhzzb/id:2/title:102">push跳转到/home/tigerhhzzb页面</router-link>
      <router-view></router-view>
    </div>
  </div>
</template>
<script lang="ts">
import { defineComponent, reactive, onMounted, toRefs, } from 'vue'
import { useRoute, useRouter } from 'vue-router'
export default defineComponent({
  name: 'Homeindex',
  setup() {
    const router = useRouter()
    const route: any = useRoute()
    const state = reactive({
      title: '',
      role: '', // 我的当前角色
      roles: [''],
      routerGo: (path) => {
        if (path === 'lx') {
          // query传参可以用path 也可以用name: Lx
          router.push({
            path: path,
            query: {
              title: '101',
              id: 1
            }
          })
          // router.replace
        } else {
          // params传参只能用name
          router.replace({
            // path: path + '/id:2/title:102',
            name: 'Lxb',
            params: {
              title: '102',
              id: 2
            }
          })
        }
      },
    })
    onMounted(() => {
      console.log('/home', route)
      state.title = route.meta.title
      state.roles = route.meta.roles
      // 模拟一个接口
      setTimeout(() => {
        const res = {
          code: 200,
          data: {
            token: '123456',
            userName: '吴彦祖',
            role: 'admin'
          }
        }
        state.role = res.data.role
      }, 0)
    })
    return {
      ...toRefs(state)
    }
  }
})
</script>
<style>
.home {
  color: pink;
  font-size: 14px;
}
</style>

<template>
  <div style="font-size: 14px;">
    <h2>我是练习b{{ route?.params?.title }}页面</h2>
    <div>id:{{ route?.params?.id }}</div>
    <button @click="routerGoBack">返回首页</button>
  </div>
</template>
<script lang="ts">
import { defineComponent, onMounted, reactive, toRefs } from 'vue'
import { useRoute, useRouter } from 'vue-router'
// vue3.0语法
export default defineComponent({
  name: 'Tigerhhzzb',
  setup() {
    const route = useRoute()
    const router = useRouter()
    const state: any = reactive({
      routerGoBack: () => {
        router.replace('/home')
        // 由replace跳转进来的不可以使用router.go(-1) 路由栈是空的》回不到上一个路由
      },
    })
    onMounted(() => {
      console.log(route)
    })
    return {
      route,
      ...toRefs(state)
    }
  },
})
</script>

<template>
  <div style="font-size: 14px;">
    <h2>我是练习{{ title }}页面</h2>
    <div>id:{{ id }}</div>
    <div>props: {{ props }}</div>
    <button @click="routerGoBack">返回上一页</button>
    <br>
    <button @click="routerGo('/home/lx/childA')">去子路由childA</button>
    <!-- <router-view></router-view> -->
    <router-view />
  </div>
</template>
<script lang="ts">
import { defineComponent, onMounted, reactive, toRefs } from 'vue'
import { useRoute, useRouter } from 'vue-router'
// vue3.0语法
export default defineComponent({
  name: 'Tigerhhzz',
  props: {
    id: {
      type: String,
      default: ''
    },
    title: {
      type: String,
      default: ''
    },
  },
  setup(props) {
    const route = useRoute()
    const router = useRouter()
    const state: any = reactive({
      id: '',
      title: '',
      routerGoBack: () => {
        router.go(-1) // go(-1)回到上一个路由
        // 也可以用router.replace('/home')跳回指定页
      },
      routerGo: (path) => {
        router.push(path)
      }
    })
    onMounted(() => {
      console.log('lx route', route)
      console.log('lx props', props)
      if (route.query) {
        state.id = route.query.id
        state.title = route.query.title
      }
    })
    return {
      props,
      ...toRefs(state)
    }
  },
})
</script>

<template>
    <div style="font-size: 14px;background: skyblue;">
      <h3>我是ChildA组件</h3>
      <h3>route.query:{{ route.query }}</h3>
    </div>
  </template>
  <script lang="ts">
  import { defineComponent, onMounted, } from 'vue'
  import { useRoute, useRouter } from 'vue-router'
  // vue3.0语法
  export default defineComponent({
    name: 'ChildA',
    setup() {
      const router = useRouter()
      const route = useRoute()
      function goBack() {
        router.go(-1)
      }
      onMounted(() => {
        console.log(route)
      })
      // 可以在页面销毁前清除事件
      // onUnmounted(() => {
      //   proxy.$mittBus.off('mittUserA')
      // })
      return {
        route, goBack
      }
    },
  })
  </script>