插槽
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# 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
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>
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11具名插槽:
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>
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18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:
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>
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# 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="https://wiki.eryajf.net">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="https://wiki.eryajf.net">单机游戏</a>
<a href="https://wiki.eryajf.net">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="https://wiki.eryajf.net">经典</a>
<a href="https://wiki.eryajf.net">热门</a>
<a href="https://wiki.eryajf.net">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: 2024/06/13, 22:13:45