<template>
<h2>当前求和为:{
{ sum }}</h2>
<button @click="sum++">点我+1</button>
<hr>
<h2>当前的信息为:{
{ msg }}</h2>
<button @click="msg+='!'">修改信息</button>
<hr>
<h2>姓名:{
{ person.name }}</h2>
<h2>年龄:{
{ person.age }}</h2>
<h2>薪资:{
{ person.job.j1.salary }}K</h2>
<button @click="person.name+='~'">修改姓名</button>
<button @click="person.age++">增长年龄</button>
<button @click="person.job.j1.salary++">涨薪</button>
</template>
<script>
import {
ref, reactive, watchEffect} from 'vue'
export default {
name: 'App',
setup() {
let sum = ref(0)
let msg = ref('你好啊')
let person = reactive({
name: '张三',
age: 18,
job: {
j1: {
salary: 20
}
}
})
// watchEffect监视默认开启 immediate: true
watchEffect(() => {
const x1 = sum.value
const x2 = person.job.j1.salary
console.log(x1, x2)
console.log('watchEffect所指定的回调执行了')
})
return {
sum,
msg,
person
}
}
}
</script>
VUE3-watchEffect函数(10)
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转载自blog.csdn.net/gty204625782/article/details/123341609
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