插槽
# 笔记
这里先将总结笔记罗列。
- 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
. - 分类:
默认插槽
、具名插槽
、作用域插槽
。 - 使用方式
- 默认插槽
```vue
父组件中:
<Category>
<div>html结构1</div>
</Category>
子组件中:
<template>
<div>
<!-- 定义插槽 -->
<slot>插槽默认内容...</slot>
</div>
</template>
```
- 具名插槽:
```vue
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>
```
- 作用域插槽:
- 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) - 具体编码:
```vue
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"></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"></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>
```
# 代码
# 默认插槽
# 代码路径
$ tree -N
.
├── App.vue
├── components
│ └── Category.vue
└── main.js
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# 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.vue'
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;
}
</style>
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# Category.vue
<template>
<div class="category">
<h3>{{title}}分类</h3>
<!-- 定义一个插槽 -->
<slot>我是默认值,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>
.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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# main.js
import Vue from "vue"
import App from './App.vue'
Vue.config.productionTip = false
new Vue({
el: '#app',
components:{App},
render: h => h(App),
beforeCreate() {
Vue.prototype.$bus = this
},
});
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# 具名插槽
# 代码路径
$ tree -N
.
├── App.vue
├── components
│ └── Category.vue
└── main.js
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# 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://fsvip.gitee.io/hexo-theme-fluid/">美食分类</a>
</Category>
<Category :title="游戏">
<ul slot="center">
<li v-for="(g,index) in games" :key="index">{{g}}</li>
</ul>
<div class="game" slot="footer">
<a href="http://fsvip.gitee.io/hexo-theme-fluid/">单机游戏</a>
<a href="http://fsvip.gitee.io/hexo-theme-fluid/">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="game">
<a href="http://fsvip.gitee.io/hexo-theme-fluid/">经典</a>
<a href="http://fsvip.gitee.io/hexo-theme-fluid/">热门</a>
<a href="http://fsvip.gitee.io/hexo-theme-fluid/">推荐</a>
</div>
<h4>欢迎前来观影</h4>
</template>
</Category>
</div>
</template>
<script>
import Category from './components/Category.vue'
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,.game,h4{
display: flex;
justify-content: space-around;
}
/* h4{
text-align: center;
} */
</style>
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# Category.vue
<template>
<div class="category">
<h3>{{title}}分类</h3>
<!-- 定义一个插槽 -->
<slot name="center">我是默认值,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>
.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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# main.js
import Vue from "vue"
import App from './App.vue'
Vue.config.productionTip = false
new Vue({
el: '#app',
components:{App},
render: h => h(App),
beforeCreate() {
Vue.prototype.$bus = this
},
});
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# 作用域插槽
# 代码路径
$ tree -N
.
├── App.vue
├── components
│ └── Category.vue
└── main.js
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# App.vue
<template>
<div class="container">
<Category :title="游戏">
<template slot-scope="eryajf">
<ul>
<li v-for="(g,index) in eryajf.games" :key="index">{{g}}</li>
</ul>
</template>
</Category>
<Category :title="游戏">
<template slot-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}">
<ol>
<h4 v-for="(g,index) in games" :key="index">{{g}}</h4>
</ol>
</template>
</Category>
</div>
</template>
<script>
import Category from './components/Category.vue'
export default {
name:'App',
components:{Category},
}
</script>
<style>
.container,.game,h4{
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 -->
<slot :games="games">我是默认值,当使用者没有传递具体结构时,我会出现1</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>
.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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# main.js
import Vue from "vue"
import App from './App.vue'
Vue.config.productionTip = false
new Vue({
el: '#app',
components:{App},
render: h => h(App),
beforeCreate() {
Vue.prototype.$bus = this
},
});
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上次更新: 2024/02/28, 13:00:35