Cnkrru

props 传递数据

// 定义一个接口，限制每个Person对象的格式
export interface PersonInter {
id:string,
name:string,
age:number
}

// 定义一个自定义类型Persons
export type Persons = Array<PersonInter>

App.vue中代码：

<template>
<Person :list="persons"/>
</template>

<script lang="ts" setup name="App">
import Person from './components/Person.vue'
import {reactive} from 'vue'
    import {type Persons} from './types'

    let persons = reactive<Persons>([
    {id:'e98219e12',name:'张三',age:18},
    {id:'e98219e13',name:'李四',age:19},
    {id:'e98219e14',name:'王五',age:20}
    ])
</script>

Person.vue中代码：

<template>
<div class="person">
<ul>
    <li v-for="item in list" :key="item.id">
        {{item.name}}--{{item.age}}
    </li>
    </ul>
</div>
</template>

<script lang="ts" setup name="Person">
import {defineProps} from 'vue'
import {type PersonInter} from '@/types'

// 第一种写法：仅接收
// const props = defineProps(['list'])

// 第二种写法：接收+限制类型
// defineProps<{list:Persons}>()

// 第三种写法：接收+限制类型+指定默认值+限制必要性
let props = withDefaults(defineProps<{list?:Persons}>(),{
    list:()=>[{id:'asdasg01',name:'小猪佩奇',age:18}]
})
console.log(props)
</script>