ref对比reactive

ref创建的对象数据类型修改整个对象时，用对象名.value即可，相当于是创建了一个新的对象
而reactive需要用Object.assign（对项名,{新数据}），只是改变原来的值

<template>
  <div class="person">
   <h2>车辆信息：一辆{{car.brand}}车，价值{{car.price}}万</h2> 
    <button @click="changePrice">修改汽车的价格</button>
    <button @click="changeName">修改汽车的品牌</button>
    <button @click="changeCar">修改汽车</button>
    <hr>
    <h2>当前求和为：{{ sum }}</h2>
    <button @click="changeSum">点我sum加一</button>
    </div>
</template>

<script lang="ts" setup name="Person">
       import { ref, reactive, toRefs, onMounted } from 'vue'
       let car=ref({brand:'奔驰',price:100})
       let sum=ref(0)
         function changePrice(){
         car.value.price+=10
       }
       function changeSum(){
        sum.value++
       }
       function changeName(){
        car.value.brand=' Audi'
       }
       function changeCar(){
        //Object.assign(car,{brand:'宝马',price:150})
        car.value={brand:'奥拓',price:1}
       }
</script>

<style scoped>
.person {
    background-color: skyblue;
    box-shadow: 0 0 10px;
    border-radius: 5px;
    padding: 20px;
}
button{
    margin: 0 5px;
}
</style>