作用：让父组件可以向子组件指定位置插入HTML结构，也是一种组件间通信的方式，适用于父组件==>子组件 。
一、默认插槽
使用方式：
父组件：
<xxxx>
<div>html结构</div>
</xxxx>
子组件：
<template>
<div>
<slot>插槽默认内容........</slot>
</div>
</template>
javascript
/* App.vue */
<template>
<div class="container">
<Category title="foods">
<img src="https://s3.ax1x.com/2021/01/16/srJlq0.jpg" alt="">
</Category>
<Category title="games">
<ul>
<li v-for="(item,index) in games" :key="index">{{ item }}</li>
</ul>
</Category>
<Category title="films">
<video controls src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"></video>
</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:['红色警戒','穿越火线','劲舞团','超级玛丽'],
films:['《教父》','《拆弹专家》','《你好，李焕英》','《尚硅谷》']
}
},
}
</script>
<style>
.container{
display: flex;
justify-content: space-around;
}
img,video{
width: 100%;
}
</style>
javascript
/* Category.vue */
<template>
<div>
<h2>{{ title }}</h2>
<slot></slot>
</div>
</template>
<script>
export default {
name:'Category',
props:['title','listData']
}
</script>
<style lang="less" scoped>
div{
width: 200px;
height: 300px;
background-color: skyblue;
}
h2{
text-align: center;
background-color: orange;
}
</style>二、具名插槽
使用方式：
父组件：
<xxxx>
<template slot="center">
<div>html结构1</div>
</template>
<template slot="footer">
<div>html结构2</div>
</template>
</xxxx>
子组件：
<template>
<div>
<slot name="center">插槽默认内容........</slot>
<slot name="footer">插槽默认内容........</slot>
</div>
</template>
javascript
/* App.vue */
<template>
<div class="container">
<Category title="foods">
<img slot="center" src="https://s3.ax1x.com/2021/01/16/srJlq0.jpg" alt="">
<a class="foot" slot="footer" href="http://www.baidu.com">更多美食</a>
</Category>
<Category title="games">
<ul slot="center">
<li v-for="(item,index) in games" :key="index">{{ item }}</li>
</ul>
<div slot="footer" class="foot">
<a href="http://www.baidu.com">单机游戏</a>
<a href="http://www.baidu.com">网络游戏</a>
</div>
</Category>
<Category title="films">
<video slot="center" controls src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4"></video>
<template v-slot:footer>
<div class="foot">
<a href="http://www.baidu.com">经典</a>
<a href="http://www.baidu.com">热门</a>
<a href="http://www.baidu.com">推荐</a>
</div>
<h4>欢迎前来观影</h4>
</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:['红色警戒','穿越火线','劲舞团','超级玛丽'],
films:['《教父》','《拆弹专家》','《你好，李焕英》','《尚硅谷》']
}
},
}
</script>
<style>
.container,.foot{
display: flex;
justify-content: space-around;
}
img,video{
width: 100%;
}
h4{
text-align: center;
}
a{
padding-top: 10px;
}
</style>
javascript
/* Category.vue */
<template>
<div class="main">
<h2>{{ title }}</h2>
<slot name="center"></slot>
<slot name="footer"></slot>
</div>
</template>
<script>
export default {
name:'Category',
props:['title','listData']
}
</script>
<style lang="less" scoped>
.main{
width: 200px;
height: 300px;
background-color: skyblue;
}
h2{
text-align: center;
background-color: orange;
}
</style>三、作用域插槽
1.理解：数据在组件的自身，但根据数据生成的结构需要组建的使用者来决定。
2.使用方法：
父组件：
<xxxx>
<template scope="scopeData">
<ul>
<li v-for="g in scopeData.games" :key="g">{{g}}</li>
</ul>
</template>
</xxxx>
<xxxx>
<template slot-scope="scopeData">
<h4 v-for="g in scopeData.games" :key="g">{{g}}</h4>
</template>
</xxxx>
子组件：
<template>
<div>
<slot :games="games"></slot>
</div>
</template>
<script>
export default {
name:'Category',
props:['title'],
data() {
return {
games:['红色警戒','穿越火线','劲舞团','超级玛丽']
}
},
}
</script>
javascript
/* App.vue */
<template>
<div class="container">
<Category title="games">
<template slot-scope="{games}">
<ul>
<li v-for="(item,index) in games" :key="index">{{ item }}</li>
</ul>
</template>
</Category>
<Category title="games">
<template slot-scope="{games}">
<ol>
<li v-for="(item,index) in games" :key="index">{{ item }}</li>
</ol>
</template>
</Category>
<Category title="games">
<template slot-scope="{games}">
<h4 v-for="(item,index) in games" :key="index">{{ item }}</h4>
</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%;
}
h4{
text-align: center;
}
a{
padding-top: 10px;
}
</style>
javascript
/* Category.vue */
<template>
<div class="main">
<h2>{{ title }}</h2>
<slot :games="games"></slot>
</div>
</template>
<script>
export default {
name:'Category',
data() {
return {
games:['红色警戒','穿越火线','劲舞团','超级玛丽'],
}
},
props:['title','listData']
}
</script>
<style lang="less" scoped>
.main{
width: 200px;
height: 300px;
background-color: skyblue;
}
h2{
text-align: center;
background-color: orange;
}
</style>