一、作用
简化模板{{xx}},xx的长度
二、toRef
1、语法
toRef(对象,属性)
2、案例
<template><h2>姓名:{{ name }}</h2><h2>年龄:{{ age }}</h2><h2>工资:{{ salary }}</h2><button @click="name += `~`">姓名</button><button @click="age += 1">年龄</button><button @click="salary-=10">工资</button> </template><script>import {reactive, toRef} from 'vue';export default {name:'Demon',setup(){let person = reactive({name: 'duck',age: 8,job:{mode:'996',salary: 2800}})console.log(person)return{name: toRef(person, 'name'),age: toRef(person, 'age'),salary: toRef(person.job, 'salary')}}} </script>
三、toRefs
1、语法
注意:toRefs只能简化一层对象,不能简化深层
toRefs(对象)