Vue3实战学习配置使用vue router路由步骤示例

demo/
    package.JSON
    vite.config.js
    index.html
    public/
    src/
        api/
        assets/
        common/
        components/
        store/
        views/
            home.vue
            list.vue
        router/
            index.js
        App.vue
        main.js            

// src/router/index.js
import {createRouter, createWEBHistory, createWebHashHistory} from 'vue-router'
import { defineAsyncComponent } from 'vue'
const router = createRouter({ 
  // history: createWebHashHistory(),  // hash 模式
  history: createWebHistory(),  // history 模式
  routes: [
    {
      path: '/',
      name: 'home',
      component: defineAsyncComponent(() => import(`../views/home.vue`)),
      meta: {
        title: '首页',
      },
    },
    {
      path: '/list',
      name: 'list',
      component: defineAsyncComponent(() => import(`../views/list.vue`)),
      meta: {
        title: '列表页',
      },
    },
    {
      path: '/*',
      redirect: '/',
    },
  ]
})
// 全局路由守卫
router.beforeEach((to, from, next)=>{
  // console.log(to, from)
  if (to.meta.title) {
    document.title = `${to.meta.title}`;
  }
  next()
})
router.afterEach((to, from)=>{
  // console.log(to, from)
  console.log('afterEach')
})
export default router

// src/main.js
import { createApp } from 'vue'
import router from './router'
import store from './store'
import App from './App.vue'
// ...
const app = createApp(App)
app.use(router).use(store);
app.mount('#app')

// src/App.vue
<template>
  <router-view/>
</template>

<template>
  <div></div>
</template>
<script>
  export default {
    data() {
      return {}
    },
    mounted() {
      // 路由跳转 && 设置参数
      this.$router.push({
        path: '/list',
        query: {
          id: 123,
        },
      })
      // 获取参数
      let { id } = this.$route.query
    },
  }
</script>

<template>
  <div></div>
</template>
<script>
  import { ref } from 'vue'
  import { useRouter, useRoute, onBeforeRouteLeave, onBeforeRouteUpdate } from 'vue-router'
  import ajax from "./ajax";
  export default {
    setup () {
      const router = useRouter()
      const route = useRoute()
      // 路由跳转 && 设置参数
      router.push({
        path: '/list',
        query: {
          id: 123,
        },
      })
      // 获取参数
      let { id } = route.query
      // 局部路由守卫
      onBeforeRouteLeave((to, from) => {
        const answer = window.confirm(
          '是否要离开本页面？'
        )
        // 取消导航并停留在同一页面上
        if (!answer) return false
      })
      const userData = ref()
      onBeforeRouteUpdate(async (to, from) => {
        //仅当 id 更改时才获取用户，例如仅 query 或 hash 值已更改
        if (to.params.id !== from.params.id) {
          userData.value = await ajax(to.params.id)
        }
      })
    },
  }
</script>