vue3-04

子组件

例1

定义子组件 Child1

<template>
  <div class="container">
    <div class="card">
      <div>
        <p class="name">{{name}}</p>
        <p class="location">{{country}}</p>
      </div>
      <img :src="avatar || '/src/assets/vue.svg'"/>
    </div>
  </div>
</template>
<script setup lang="ts">
// 定义属性,  编译宏
defineProps<{name:string,country:string,avatar?:string}>()
</script>
<style scoped>
.container {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
  flex-direction: row-reverse;
}
.name {
  font-weight: bold;
}
.location {
  font-size: 0.8em;
  color: #6d597a;
}
.card {
  display: flex;
  justify-content: space-evenly;
  padding: 1em;
  margin: 1rem;
  border-radius: 5px;
  background: #fff;
  width: 200px;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.25), 0 10px 10px rgba(0, 0, 0, 0.22);
}

.card:hover {
  transform: rotate(-5deg);
}

.card img {
  margin-left: 1em;
  border-radius: 50%;
  max-width: 55px;
  max-height: 55px;
}
</style>

父组件引用

<template>
  <Child1 name="张三" country="中国" avatar="/src/assets/vue.svg"></Child1>
  <Child1 name="李四" country="印度" avatar="/vite.svg"></Child1>
  <Child1 name="王五" country="韩国" ></Child1>
</template>
<script lang="ts" setup>
import Child1 from '../components/Child1.vue';
</script>

例2

首先添加类型说明 model/ModelRandomUser.ts

import { AxiosResponse } from "axios";
export interface AxiosRespResults extends AxiosResponse<Results>{}

export interface Results {
  info: {
    page: number,
    results: number
  },
  results: Result[]
}

export interface Result {
  gender: 'male' | 'female',
  name: {
    first: string,
    last: string
  },
  location: {
    country: string
  },
  picture: {
    medium: string
  },
  login: {
    username: string
  }
}

子组件不变，父组件使用子组件

<!-- 父组件 -->
<template>
  <Child1 v-for="u of users" 
    :name="u.name.first" 
    :country="u.location.country" 
    :avatar="u.picture.medium"
    :key="u.login.username"></Child1>
</template>
<script setup lang="ts">
import axios from "axios";
import { useRequest } from "vue-request";
import { computed } from "vue";
import { AxiosRespResults } from '../model/ModelRandomUser'
import Child1 from "../components/Child1.vue";

const { data } = useRequest<AxiosRespResults>(
  ()=>axios.get('https://randomuser.me/api/?results=3')
)

const users = computed(()=>{
  return data.value?.data.results || []
})
</script>

如果觉得 Result 数据结构嵌套太复杂，还可以做一个类型映射

<!-- 父组件 -->
<template>
  <Child1 v-for="u of users" 
    :name="u.name" 
    :country="u.country" 
    :avatar="u.avatar"
    :key="u.username"></Child1>
</template>
<script setup lang="ts">
import axios from "axios";
import { useRequest } from "vue-request";
import { computed } from "vue";
import { AxiosRespResults, Result } from '../model/ModelRandomUser'
import Child1 from "../components/Child1.vue";

const { data } = useRequest<AxiosRespResults>(
  ()=>axios.get('https://randomuser.me/api/?results=3')
)

const users = computed(()=>{
  return data.value?.data.results.map(resultToUser) || []
})

interface User {
  name: string,
  country: string,
  avatar: string,
  username: string
}
function resultToUser(r:Result):User {
  return {
    name: r.name.first,
    country: r.location.country,
    avatar: r.picture.medium,
    username: r.login.username
  }
}
</script>

resultToUser 将 Result 类型映射为 User 类型