# 30. Slot插槽
<slot>插槽: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
分类:默认插槽、具名插槽、作用域插槽
使用方式
默认插槽
父组件中: <Category> <div>html结构1</div> </Category> 子组件中:Category <template> <div> <!-- 定义插槽 --> <slot>插槽默认内容...</slot> </div> </template>1
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13具名插槽
父组件指明放入子组件的哪个插槽
slot="footer",如果是template可以写成v-slot:footer父组件中: <Category> <template slot="center"> <div>html结构1</div> </template> <template v-slot:footer> <div>html结构2</div> </template> </Category> 子组件中: <template> <div> <!-- 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>1
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18作用域插槽
scope用于父组件往子组件插槽放的html结构接收子组件的数据理解:==数据在组件的自身,但根据数据生成的结构需要组件的使用者来决定==
(
games数据在Category组件中,但使用数据所遍历出来的结构由App组件决定)父组件中: <Category> <template scope="scopeData"> <!-- 生成的是ul列表 --> <ul> <li v-for="g in scopeData.games" :key="g">{{g}}</li> </ul> </template> </Category> <Category> <template slot-scope="scopeData"> <!-- 生成的是h4标题 --> <h4 v-for="g in scopeData.games" :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>1
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# 30.1 默认插槽
# App.vue
<template>
<div class="container">
<Category title="美食">
<img src="https://s3.ax1x.com/2021/01/16/srJlq0.jpg" alt="">
</Category>
<Category title="游戏">
<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"></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 scoped>
.container {
display: flex;
justify-content: space-around;
}
</style>
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# Category.vue
<template>
<div class="category">
<h3>{{ title }}分类</h3>
<!-- 💖💖💖 -->
<!-- 定义一个插槽(挖个坑,等着组件的使用者进行填充) -->
<slot>我是一些默认值,当使用者没有传递具体结构时,我会出现</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;
}
video {
width: 100%;
}
img {
width: 100%;
}
</style>
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# 30.2 具名插槽
# App.vue
<template>
<div class="container">
<Category title="美食">
<img slot="center" src="https://s3.ax1x.com/2021/01/16/srJlq0.jpg" alt="">
<a slot="footer" href="http://www.boluobook.top">菠萝咕噜肉</a>
</Category>
<Category title="游戏">
<ul slot="center">
<li v-for="(g,index) in games" :key="index">{{g}}</li>
</ul>
<div class="foot" slot="footer">
<a href="http://www.boluobook.top">单机游戏</a>
<a href="http://www.boluobook.top">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"></video>
<template v-slot:footer>
<div class="foot">
<a href="http://www.boluobook.top">经典</a>
<a href="http://www.boluobook.top">热门</a>
<a href="http://www.boluobook.top">推荐</a>
</div>
<h4 style="text-align:center">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 scoped>
.container,
.foot {
display: flex;
justify-content: space-around;
}
</style>
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# Category.vue
<template>
<div class="category">
<h3>{{ title }}分类</h3>
<!-- 定义一个插槽(挖个坑,等着组件的使用者进行填充) -->
<slot name="center">我是一些默认值,当使用者没有传递具体结构时,我会出现1</slot>
<slot name="footer">我是一些默认值,当使用者没有传递具体结构时,我会出现2</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;
}
video {
width: 100%;
}
img {
width: 100%;
}
</style>
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# 30.3 作用域插槽
# Category.vue
<template>
<div class="category">
<h3>{{title}}分类</h3>
<slot :games="games" msg="hello">我是默认的一些内容</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>
<style scoped>
.category{
background-color: skyblue;
width: 200px;
height: 300px;
}
h3{
text-align: center;
background-color: orange;
}
video{
width: 100%;
}
img{
width: 100%;
}
</style>
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# App.vue
<template>
<div class="container">
<Category title="游戏">
<template scope="atguigu">
<ul>
<li v-for="(g,index) in atguigu.games" :key="index">{{g}}</li>
</ul>
</template>
</Category>
<Category title="游戏">
<template scope="{games}">
<ol>
<li style="color:red" v-for="(g,index) in games" :key="index">{{g}}</li>
</ol>
</template>
</Category>
<Category title="游戏">
<template slot-scope="{games}">
<h4 v-for="(g,index) in games" :key="index">{{g}}</h4>
</template>
</Category>
</div>
</template>
<script>
import Category from './components/Category'
export default {
name:'App',
components:{Category},
}
</script>
<style scoped>
.container,.foot{
display: flex;
justify-content: space-around;
}
h4{
text-align: center;
}
</style>
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# main.js
//引入Vue
import Vue from 'vue'
//引入App
import App from './App.vue'
//引入插件
import vueResource from 'vue-resource'
//关闭Vue的生产提示
Vue.config.productionTip = false
//使用插件
Vue.use(vueResource)
//创建vm
new Vue({
el:'#app',
render: h => h(App),
beforeCreate() {
Vue.prototype.$bus = this
}
})
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