vue3动态加载组件

如何在Vue3中动态加载组件

需求根据下拉框的值，加载不同的组件
新建文件aaa.vue，bbb.vue

<template>
  <div class="container">
    我是bbbb组件
  </div>
</template>

<script lang="ts" setup name="taskPush">
</script>
<style scoped lang="less">
</style>

aaa组件

<template>
  <div class="container">
    我是aaa组件
  </div>
</template>

<script lang="ts" setup name="taskPush">
</script>
<style scoped lang="less">
</style>

新建.ts文件

import { shallowRef } from 'vue';
export default function () {
  const asyncComponent: any = shallowRef({}); //渲染的表单组件（异步加载）
  /**
   * 获取calssify下的某一个组件
   * @param moduleName 组件名称
   */
  const getFormComponents = (moduleName: string) => {
    import(`./${moduleName}.vue`).then((module: any) => {
      asyncComponent.value = module.default;
    });
  };
  return {
    getFormComponents,
    asyncComponent
  };
}

在父组件中使用

<template>
  <div class="container">
    <el-select
      v-model="value"
      placeholder="Select"
      size="large"
      style="width: 240px"
      @change='changeCom'
    >
      <el-option
        v-for="item in options"
        :key="item.value"
        :label="item.label"
        :value="item.value"
      />
    </el-select>
    <component
      :is="asyncComponent"
      ref="componentRef"
    ></component>
  </div>
</template>

<script lang="ts" setup >
import { ref } from 'vue'
import getModuleList from "./getModuleList";
const { getFormComponents, asyncComponent } = getModuleList();
const value = ref('')

const options = [
  {
    value: 'aaa',
    label: '组件',
  },
  {
    value: 'bbb',
    label: '组件bbb',
  },
]
const changeCom = (e:any)=>{

}

</script>
<style scoped lang="less">
</style>