vue3中动态组件的踩坑记录分享

<template>
 
  <div>
    <div class="top text-center">
      <el-radio-group v-model="currentMode" size="medium">
        <el-radio-button v-for="(item, i) in menuList" :key="item.value" :label="item.value">
          {{ item.label }}
        </el-radio-button>
      </el-radio-group>
    </div>
    <component :is="currentMode"></component>
  </div>
</template>
​
<script setup>
import Plan1 from './plan1.vue';
import Plan2 from './plan2.vue';
import Plan3 from './plan3.vue';
​
​
import { ref } from 'vue';
const menuList = [
  { label: 'Plan1', value: 'Plan1' },
  { label: 'Plan2', value: 'Plan2' },
  { label: 'Plan3', value: 'Plan3' },
];
const currentMode = ref(menuList[0].value);
</script>
​
<style lang="scss" scoped></style>

function getComponent() {
  const component = {
    Plan1: Plan1,
    Plan2: Plan2,
    Plan3: Plan3,
  };
  return component[loadCountFlag.value];
}

<template>
  <component :is="getComponent()" />
</template>
​
<script setup>
import { ref, defineAsyncComponent } from 'vue';
​
// Assuming loadCountFlag is a reactive reference
const loadCountFlag = ref(1);
​
// Lazy-load components
const Plan1 = defineAsyncComponent(() => import('./components/Plan1.vue'));
const Plan2 = defineAsyncComponent(() => import('./components/Plan2.vue'));
const Plan3 = defineAsyncComponent(() => import('./components/Plan3.vue'));
​
function getComponent() {
  const componentMap = {
    1: Plan1,
    2: Plan2,
    3: Plan3,
  };
  return componentMap[loadCountFlag.value];
}
</script>