vue3动态组件组件shallowRef包裹问题

m0_459252462024-02-21 19:52

在vue3做tabs切换功能的时候，如果导入的组件不适用shallowRef包裹会显示下面的警告：

javascript 复制代码

Home.vue?t=1708401434509:43 [Vue warn]: Vue received a Component that was made a reactive object. This can lead to unnecessary performance overhead and should be avoided by marking the component with `markRaw` or using `shallowRef` instead of `ref`. 
Component that was made reactive:  {__hmrId: '2afd162d', __file: 'D:/v3code/my-big-charts/src/components/Comp7.vue', render: ƒ} 
  at <Home onVnodeUnmounted=fn<onVnodeUnmounted> ref=Ref< Proxy(Object) {__v_skip: true} > > 
  at <RouterView> 
  at <App>

根据提示代码修改如下：

javascript 复制代码

<script setup>
import {ref,reactive,readonly,computed,watch,watchEffect,markRaw,shallowRef} from 'vue'
import Comp7 from '../components/Comp7.vue'
import Comp6 from '../components/Comp6.vue'
const activeComp = shallowRef(Comp6)
const tab = reactive([{
    name: "A组件",
    comName: shallowRef(Comp6)
}, {
    name: "B组件",
    comName: shallowRef(Comp7
}])
const change = index=>{
    activeComp.value = tab[index].comName
}
</script>
<template>
    <ul>
        <li v-for="(item,index) in tab" :key="item.name" @click="change(index)">{{ item.name }}</li>
    </ul>
    <div>
        <component :is="activeComp"></component>
    </div>
</template>

就能解决上面的问题。