vue3的内置组件汇总

<teleport to="移动位置"></teleport>

<template>
  <div class="tel_a">
    <h3>父组件A</h3>
    <son />
  </div>
</template>
<script setup>
  import { defineAsyncComponent } from 'vue'

  const Son = defineAsyncComponent(() => import('./components/son.vue'))
</script>
<style lang="less" scoped>
  .tel_a {
    width: 30%;
    background: #aaa;
    padding: 10px 30px;
  }
</style>

<template>
  <div class="tel_b">
    <div>子组件B</div>
    <button @click="modalOpen = true"> 打开全屏弹窗（teleport） </button>
    <teleport to="body">
      <div v-if="modalOpen" class="modal">
        <div class="content">
          我是一个teleport弹窗<br />（我的父组件是“body”）
          <button @click="modalOpen = false"> 关闭 </button>
        </div>
      </div>
    </teleport>
  </div>
</template>
<script setup>
  import { ref } from 'vue'

  const modalOpen = ref(false)
</script>
<style lang="less" scoped>
  .flex-center () {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .tel_b {
    padding: 10px;
    background: rgba(242, 177, 57);
  }
  .modal {
    .flex-center;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.5);
    .content {
      .flex-center;
      flex-direction: column;
      text-align: center;
      width: 260px;
      height: 160px;
      padding: 10px;
      background-color: #fff;
      button {
        display: block;
        margin-top: 30px;
      }
    }
  }
</style>

import { defineAsyncComponent } from 'vue'
const Child = defineAsyncComponent(()=>import('./components/Child.vue'))

<template>
    <div class="app">
        <h3>我是App组件</h3>
        <Suspense>
            <template #default>
                <Child/>
            </template>
            <template #fallback>
                <h3>加载中.....</h3>
            </template>
        </Suspense>
    </div>
</template>