vue3中使用keepalive和component

_处女座程序员的日常2024-06-27 14:19

vue3和vue2中有些差异，直接上代码：

javascript 复制代码

  <KeepAlive include="aComponent">
          <component 
            :is='compList[active]'
            @goDetail="goDetail"
            @back="back" 
          />
      </KeepAlive>  
<script setup lang="ts">
/**
 * 将事件从报告图表中抛上来，传递具体数据
 */
import { ref ,markRaw} from 'vue'
import aComponent from './Acomponent.vue'
import bcomponent from './Bcomponent.vue'

const dataDownConfig = ref(null);
const active = ref('aComponent');
const compList = ref({
  aComponent: markRaw(aComponent ),
  bComponent: markRaw(bComponent )
})
// 通过切换active的值来切换组件
const goDetail = (data: any) => {
  active.value = 'aComponent '
}
const back = () => {
  active.value = 'bcomponent '
}
</script>

// Acomponent.vue (给组件加名字)

javascript 复制代码

<script lang="ts" setup>
defineOptions({
  name: 'aComponent '
})
</script>