给多个异步组件提供一个统一的状态管理

使用前，有两个loading...

使用后， 只有一个loading...

Index.vue:

<script setup lang="ts">
import { onMounted, ref, defineAsyncComponent } from 'vue'
import { useRouter } from 'vue-router'
import Header from './Header.vue'
import LoadingComponent from './LoadingComponent.vue'
import ErrorComponent from './ErrorComponent.vue'
// import List from './List.vue'
// const List = defineAsyncComponent(() => import('./List.vue'))

// const List = defineAsyncComponent(() => {
//   return new Promise((resolve, reject) => {
//     setTimeout(() => {
//       let temp = import('./List.vue')
//       resolve(temp as never)
//     }, 2000)
//   })
// })

const List = defineAsyncComponent({
  loader: () => {
    return new Promise((resolve, reject) => {
      setTimeout(() => {
        let temp = import('./List.vue')
        resolve(temp as never)
      }, 1000)
    })
  },
  loadingComponent: LoadingComponent,
  delay: 200,
  errorComponent: ErrorComponent,
  timeout: 3000,
})

const router = useRouter()
const handleJump = (path: any) => {
  router.push(path)
}
onMounted(() => {})
</script>

<template>
  <div>
    <Suspense>
      <div>
        me
        <button @click="() => handleJump('/home')">home</button>
        <Header></Header>
      </div>

      <template #fallback>
        <div>loading...</div>
      </template>
    </Suspense>
    <List></List>
  </div>
</template>

Header.vue:

<script setup lang="ts">
let res: any = { count: 0 }
res = await new Promise((resolve) => {
  setTimeout(() => {
    resolve({ count: 1 })
  }, 2000)
})
console.log('res', res)
import { onMounted, ref } from 'vue'

onMounted(() => {})
</script>

<template>
  <div>header {{ res.count }}</div>
</template>

List.vue:

<script setup lang="ts">
import { onMounted, ref } from 'vue'

onMounted(() => {})
</script>

<template>
  <div>
    list
  </div>
</template>

LoadingComponent.vue:

<script setup lang="ts">
import { onMounted, ref } from 'vue'

onMounted(() => {})
</script>

<template>
  <div>loading...</div>
</template>

官方文档

https://cn.vuejs.org/guide/built-ins/suspense.html

人工智能学习网站

https://chat.xutongbao.top