亲宝软件园·资讯

展开

Vue 插槽使用

Errol_King 人气:0

默认插槽

首先做一个页面:

新增 Category.vue

<template>
<div class="category">
  <h3>{{title}}分类</h3>
  <ul>
    <li v-for="(item,index) in listData" :key="index">{{item}}</li>
  </ul>
</div>
</template>

<script>
export default {
  name: "Category",
  props:["title","listData"]
}
</script>

<style scoped>
.category{
  background-color: skyblue;
  width: 200px;
  height: 300px;
}
h3{
  text-align: center;
  background-color: orange;
}
</style>

App.vue 中使用

<template>
  <div class="container">
    <Category title="美食" :listData="foods"/>
    <Category title="游戏" :listData="games"/>
    <Category title="电影" :listData="films"/>
  </div>
</template>

<script>
import Category from "@/components/Category";

export default {
  name: 'App',
  components: {Category},
  data(){
    return{
      foods:["火锅","烧烤","小龙虾","牛排"],
      games:["劲舞团","QQ飞车","超级玛丽","无人深空"],
      films:["《教父》","《狩猎》","《禁闭岛》","《聚焦》"]
    }
  }

}
</script>

<style>
.container {
  display: flex;
  justify-content: space-around;
}
</style>

现在修改需求,每个分类都要展示不同的内容:

这里就用到了插槽,修改 Category.vue

<template>
<div class="category">
  <h3>{{title}}分类</h3>
  <slot></slot>
</div>
</template>

<script>
export default {
  name: "Category",
  props:["title"]
}
</script>

<style scoped>
.category{
  background-color: skyblue;
  width: 200px;
  height: 300px;
}
h3{
  text-align: center;
  background-color: orange;
}
</style>

修改 App.vue

<template>
  <div class="container">
    <Category title="美食" :listData="foods">
      <img src="https://img2.baidu.com/it/u=2073611229,1921777437&fm=253&fmt=auto&app=120&f=JPEG?w=1200&h=675"/>
    </Category>
    <Category title="游戏" :listData="games">
      <ul>
        <li v-for="(g,index) in games" :key="index">{{g}}</li>
      </ul>
    </Category>
    <Category title="电影">
      <video controls src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"/>
    </Category>
  </div>
</template>

<script>
import Category from "@/components/Category";

export default {
  name: 'App',
  components: {Category},
  data(){
    return{
      foods:["火锅","烧烤","小龙虾","牛排"],
      games:["劲舞团","QQ飞车","超级玛丽","无人深空"],
      films:["《教父》","《狩猎》","《禁闭岛》","《聚焦》"]
    }
  }

}
</script>

<style>
.container {
  display: flex;
  justify-content: space-around;
}
img,video{
  width: 100%;
}
</style>

具名插槽

修改 Category.vue

<template>
<div class="category">
  <h3>{{title}}分类</h3>
  <slot name="center">这是一些默认值,没有内容时展示</slot>
  <slot name="footer">这是一些默认值,没有内容时展示</slot>
</div>
</template>

<script>
export default {
  name: "Category",
  props:["title"]
}
</script>

<style scoped>
.category{
  background-color: skyblue;
  width: 200px;
  height: 300px;
}
h3{
  text-align: center;
  background-color: orange;
}
</style>

修改 App.vue

<template>
  <div class="container">
    <Category title="美食" :listData="foods">
      <img slot="center" src="https://img2.baidu.com/it/u=2073611229,1921777437&fm=253&fmt=auto&app=120&f=JPEG?w=1200&h=675"/>
      <a slot="footer" href="https://www.baidu.com" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >更多美食</a>
    </Category>
    <Category title="游戏" :listData="games">
      <ul slot="center">
        <li v-for="(g,index) in games" :key="index">{{g}}</li>
      </ul>
      <div class="foot" slot="footer">
        <a href="https://www.baidu.com" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >单机游戏</a>
        <a href="https://www.baidu.com" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >网络游戏</a>
      </div>
    </Category>
    <Category title="电影">
      <video slot="center" controls src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"/>
      <!--v-slot 只有template能用-->
      <template v-slot:footer>
        <div class="foot" slot="footer">
          <a href="https://www.baidu.com" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >经典</a>
          <a href="https://www.baidu.com" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >热门</a>
          <a href="https://www.baidu.com" rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow"  rel="external nofollow" >推荐</a>
        </div>
      </template>
    </Category>
  </div>
</template>

<script>
import Category from "@/components/Category";

export default {
  name: 'App',
  components: {Category},
  data(){
    return{
      foods:["火锅","烧烤","小龙虾","牛排"],
      games:["劲舞团","QQ飞车","超级玛丽","无人深空"],
      films:["《教父》","《狩猎》","《禁闭岛》","《聚焦》"]
    }
  }

}
</script>

<style>
.container,.foot {
  display: flex;
  justify-content: space-around;
}
img,video{
  width: 100%;
}
</style>

作用域插槽

如果数据在 Category 中,但需要展示不同的形式,我们可以通过插槽传值,类似于我们从父组件向子组件传值:

<template>
  <div class="category">
    <h3>{{ title }}分类</h3>
    <slot :games="games" :msg="hello"></slot>
  </div>
</template>

<script>
export default {
  name: "Category",
  props: ["title"],
  data() {
    return {
      games: ["劲舞团", "QQ飞车", "超级玛丽", "无人深空"]
    }
  }
}
</script>

<style scoped>
.category {
  background-color: skyblue;
  width: 200px;
  height: 300px;
}

h3 {
  text-align: center;
  background-color: orange;
}
</style>

App 中在子组件中使用 <template> 包裹要展示的内容,标签中可以使用scope接收传过来的值

<template>
  <div class="container">
    <Category title="游戏">
      <template v-slot="receiveValue">
        <ul>
          <li v-for="(g,index) in receiveValue.games" :key="index">{{ g }}</li>
        </ul>
        <a>{{ receiveValue.msg }}</a>
      </template>
    </Category>

    <Category title="游戏">
      <template v-slot="{games,msg}">
        <ol>
          <li v-for="(g,index) in games" :key="index">{{ g }}</li>
        </ol>
        <a>{{ msg }}</a>
      </template>
    </Category>

    <Category title="游戏">
      <template v-slot="{games,msg}">
        <h4 v-for="(g,index) in games" :key="index">{{ g }}</h4>
        <a>{{ msg }}</a>
      </template>
    </Category>

  </div>
</template>

<script>
import Category from "@/components/Category";

export default {
  name: 'App',
  components: {Category},
}
</script>

<style>
.container, .foot {
  display: flex;
  justify-content: space-around;
}

img, video {
  width: 100%;
}
</style>

插槽总结

默认插槽

父组件中:

<Category>
    <div>html结构</div>
<Category>

子组件中:

<template>
    <div>
    <!--定义插槽-->
    <slot>插槽默认内容...</slot>
    </div>
</templdte>

具名插槽

父组件中:

<Category>
    <template slot="center">
        <div>html结构1</div>
    </template>
    <tenplate v-slot:footer>
        <div>html结构2</div>
    </template>
</Category>

子组件中:

<template>
    <div>
    <1--定义插槽-->
    <slot name="center">插槽默认内容...</slot>
    <slot name="footer”>插槽默认内容...</slot>
    </div>
</template>

作用域插槽

父组件中:

<category>
    <template v-slot="scopeData"
    <!--生成的是ul列表-->
    <ul>
        <li v-for="g in scopeDsta.games" : key="g">{g}</li>
    </ul>
    </template>
</Category>

<Category>
    <template v-slot={scopeData}>
    <!--生成的是h4标题-->
    <h4 v-for="g in scopeData" :key="g">{{g}}</h4>
    </template>
</Category>

子组件中:

<template>
    <div>
        <slot :games="games"></slot>
    </div>
</template>

<script>
export default{
    name: "Category ',
    props: ["title"],
    //数据在子组件自身
    data() {
        return{
            games:['红色警戒,穿越火线',"劲舞团",超级玛丽"]
        }
    }
}</script>

注意:scope和slot-scope过时了,可以使用v-slot

加载全部内容

相关教程
猜你喜欢
用户评论