VUE3-toRaw函数与markRaw函数（16）

<template>
  <h2>姓名：{
   
   { name }}</h2>
  <h2>年龄：{
   
   { age }}</h2>
  <h2>薪资：{
   
   { job.j1.salary }}K</h2>
  <h2 v-show="person.car">座驾信息：{
   
   { person.car }}</h2>
  <hr>

  <button @click="showRawPerson">输出最原始的person</button>
  <button @click="addCar">给人添加一台车</button>
  <button @click="person.car.name+='!'" v-show="person.car">换车名</button>
  <button @click="changePrice" v-show="person.car">换价格</button>
</template>

<script>
import {
     
     reactive, toRefs, toRaw, markRaw} from 'vue'

export default {
     
     
  name: 'App',
  setup() {
     
     
    let person = reactive({
     
     
      name: '张三',
      age: 18,
      job: {
     
     
        j1: {
     
     
          salary: 20
        }
      }
    })

    //展示原始的person
    function showRawPerson() {
     
     
      const p = toRaw(person) //p为普通对象
      p.age++
      console.log(p)
    }

    //给person添加car对象，标记这个car对象，使其永远不会再成为响应式对象
    function addCar() {
     
     
      let car = {
     
     name: '奔驰', price: 40}
      person.car = markRaw(car)
    }

    //改变车的价格，数据更改了，但是没有响应式
    function changePrice() {
     
     
      person.car.price++
      console.log(person.car.price)
    }

    return {
     
     
      person,
      ...toRefs(person),
      showRawPerson,
      addCar,
      changePrice
    }
  }
}
</script>