- markRow:标记一个对象,使其不能成为一个响应式对象。
- toRaw:将响应式对象(由 reactive定义的响应式)转换为普通对象。
- shallowRef:只处理基本数据类型的响应式, 不进行对象的响应式处理。
- shallowReactive:只处理对象最外层属性的响应式(浅响应式)。
问题:为什么vue3需要对引入的组件使用markRow?
vue2
<template>
<div>
<component :is="A"></component>
</div>
</template>
<script>
import A from './A';
export default {
name: 'Home',
data() {
return {}
},
components: { A },
}
vue3
<template>标签:name,响应,components,vue3,组件,import,tabList,动态,com From: https://blog.51cto.com/u_15885506/6086995
<ul>
<li
v-for='(item,index) in tabList'
:key='index'
@click='change(index)'
>
{{ item.name }}
</li>
</ul>
<keep-alive>
<component :is="currentComponent"></component>
</keep-alive>
</template>
<script setup>
import A from '../components/A.vue'
import B from '../components/B.vue'
import C from '../components/C.vue'
let tabList = reactive([
{name:'组件A',com:markRaw(A)},
{name:'组件B',com:markRaw(B)},
{name:'组件C',com:markRaw(C)}
]);
let currentComponent = reactive({
com:tabList[0]
});
const change = ( idx )=>{
currentComponent = tabList[idx].com;
}