Vue10 组件通信-插槽

插槽

分成三种：默认插槽、具名插槽、作用域插槽

默认插槽

父组件father.vue

<template>
  <div class="father">
    <h3>父组件</h3>
    <div class="content">
      <Category title="热门游戏列表">
        <ul>
          <li v-for="g in games" :key="g.id">{{ g.name }}</li>
        </ul>
      </Category>
      <Category title="今日美食城市">
        <img :src="imgUrl" alt="">
      </Category>
      <Category title="今日影视推荐">
        <video :src="videoUrl" controls></video>
      </Category>
    </div>
  </div>
</template>

<script setup lang="ts" name="Father">
  import Category from './Category.vue'
  import { ref,reactive } from "vue";

  let games = reactive([
    {id:'asgytdfats01',name:'英雄联盟'},
    {id:'asgytdfats02',name:'王者农药'},
    {id:'asgytdfats03',name:'红色警戒'},
    {id:'asgytdfats04',name:'斗罗大陆'}
  ])
  let imgUrl = ref('https://z1.ax1x.com/2023/11/19/piNxLo4.jpg')
  let videoUrl = ref('http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4')

</script>

<style scoped>
  .father {
    background-color: rgb(165, 164, 164);
    padding: 20px;
    border-radius: 10px;
  }
  .content {
    display: flex;
    /* flex将所有竖向变成横向  均分开 */
    justify-content: space-evenly;
  }
  img,video {
    width: 100%;
  }
</style>

Categroy.vue

<template>
  <div class="category">
    <h2>{{title}}</h2>
    <slot>默认内容</slot>
  </div>
</template>

<script setup lang="ts" name="Category">
  defineProps(['title'])
</script>

<style scoped>
  .category {
    background-color: skyblue;
    border-radius: 10px;
    box-shadow: 0 0 10px;
    padding: 10px;
    width: 200px;
    height: 300px;
  }
  h2 {
    background-color: orange;
    text-align: center;
    font-size: 20px;
    font-weight: 800;
  }
</style>

具名插槽

每一个坑内容 必须放在对应的里面 v-slot:name

父组件father.vue

<template>
  <div class="father">
    <h3>父组件</h3>
    <div class="content">

      <Category>
        <template v-slot:s2>
          <ul>
            <li v-for="g in games" :key="g.id">{{ g.name }}</li>
          </ul>
        </template>
        <template v-slot:s1>
          <h2>热门游戏列表</h2>
        </template>
      </Category>

      <Category>
          <template v-slot:s2>
            <img :src="imgUrl" alt="">
          </template>
          <template v-slot:s1>
            <h2>今日美食城市</h2>
          </template>
      </Category>

      <Category>
          <template #s2>
            <video :src="videoUrl" controls></video>
          </template>
          <template #s1>
            <h2>今日影视推荐</h2>
          </template>
      </Category>
    </div>
  </div>
</template>

<script setup lang="ts" name="Father">
  import Category from './Category.vue'
  import { ref,reactive } from "vue";

  let games = reactive([
    {id:'asgytdfats01',name:'英雄联盟'},
    {id:'asgytdfats02',name:'王者农药'},
    {id:'asgytdfats03',name:'红色警戒'},
    {id:'asgytdfats04',name:'斗罗大陆'}
  ])
  let imgUrl = ref('https://z1.ax1x.com/2023/11/19/piNxLo4.jpg')
  let videoUrl = ref('http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4')

</script>

<style scoped>
  .father {
    background-color: rgb(165, 164, 164);
    padding: 20px;
    border-radius: 10px;
  }
  .content {
    display: flex;
    /* flex将所有竖向变成横向  均分开 */
    justify-content: space-evenly;
  }
  h2 {
    background-color: orange;
    text-align: center;
    font-size: 20px;
    font-weight: 800;
  }
  img,video {
    width: 100%;
  }
</style>

子组件 Category.vue

<template>
  <div class="category">
    <slot name="s1">默认内容1</slot>
    <slot name="s2">默认内容2</slot>
  </div>
</template>

<script setup lang="ts" name="Category">
  defineProps(['title'])
</script>

<style scoped>
  .category {
    background-color: skyblue;
    border-radius: 10px;
    box-shadow: 0 0 10px;
    padding: 10px;
    width: 200px;
    height: 300px;
  }
</style>

作用域插槽

1. 数据在子那边，但根据数据生成的结构，由父亲决定

案例

父组件 father.vue

根据需要调整传递的games格式

v-slot 可以直接结构数据 下面可以直接写 g in games

<template>
  <div class="father">
    <h3>父组件</h3>
    <div class="content">
    <Game>
      <template v-slot="params">
        <ul>
            <li v-for="g in params.games" :key="g.id">{{ g.name }}</li>
        </ul>
      </template>
    </Game>

    <Game>
      <template v-slot="{games}">
        <ol>
            <li v-for="g in games" :key="g.id">{{ g.name }}</li>
        </ol>
      </template>
    </Game>

    <Game>
      <template v-slot="{games}">
          <h3 v-for="g in games" :key="g.id">{{ g.name }}</h3>
      </template>
    </Game>
    </div>
  </div>
</template>

<script setup lang="ts" name="Father">
  import Game from './Game.vue'
</script>

<style scoped>
  .father {
    background-color: rgb(165, 164, 164);
    padding: 20px;
    border-radius: 10px;
  }
  .content {
    display: flex;
    /* flex将所有竖向变成横向  均分开 */
    justify-content: space-evenly;
  }
  h2 {
    background-color: orange;
    text-align: center;
    font-size: 20px;
    font-weight: 800;
  }
  img,video {
    width: 100%;
  }
</style>

子组件 game.vue

games在子组件中，父组件无法拿到，所以先需要给插槽传递 games

<template>
    <div class="game">
        <h2>游戏列表</h2>
        <!-- <ul>
            <li v-for="g in games" :key="g.id">{{ g.name }}</li>
        </ul> -->
        <!-- 给插槽里面传递 -->
        <slot :games="games" x="哈哈" y="你好"></slot>
    </div>
</template>

<script setup lang="ts" name="Game">
    import { reactive } from 'vue';
    let games = reactive([
        {id:'asgytdfats01',name:'英雄联盟'},
        {id:'asgytdfats02',name:'王者农药'},
        {id:'asgytdfats03',name:'红色警戒'},
        {id:'asgytdfats04',name:'斗罗大陆'}
    ])
</script>

<style scoped>
    .game{
        width: 200px;
        height: 300px;
        background-color: skyblue;
        border-radius: 10px;
        box-shadow: 0 0 10px;
    }
    h2 {
        background-color: orange;
        text-align: center;
        font-size: 20px;
        font-weight: 800;
    }
</style>