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這篇“Vue中的插槽怎么使用”文章的知識(shí)點(diǎn)大部分人都不太理解,所以小編給大家總結(jié)了以下內(nèi)容,內(nèi)容詳細(xì),步驟清晰,具有一定的借鑒價(jià)值,希望大家閱讀完這篇文章能有所收獲,下面我們一起來(lái)看看這篇“Vue中的插槽怎么使用”文章吧。
首先做一個(gè)頁(yè)面:
新增 Category.vue
<template> <div class="category"> <h4>{{title}}分類(lèi)</h4> <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; } h4{ text-align: center; background-color: orange; } </style>
App.vue 中使用
<template> <div class="container"> <Category title="美食" :listData="foods"/> <Category title="游戲" :listData="games"/> <Category title="電影" :listData="films"/> </div> </template> <script> import Category from "@/components/Category"; export default { name: 'App', components: {Category}, data(){ return{ foods:["火鍋","燒烤","小龍蝦","牛排"], games:["勁舞團(tuán)","QQ飛車(chē)","超級(jí)瑪麗","無(wú)人深空"], films:["《教父》","《狩獵》","《禁閉島》","《聚焦》"] } } } </script> <style> .container { display: flex; justify-content: space-around; } </style>
現(xiàn)在修改需求,每個(gè)分類(lèi)都要展示不同的內(nèi)容:
這里就用到了插槽,修改 Category.vue
<template> <div class="category"> <h4>{{title}}分類(lèi)</h4> <slot></slot> </div> </template> <script> export default { name: "Category", props:["title"] } </script> <style scoped> .category{ background-color: skyblue; width: 200px; height: 300px; } h4{ 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="游戲" :listData="games"> <ul> <li v-for="(g,index) in games" :key="index">{{g}}</li> </ul> </Category> <Category title="電影"> <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:["火鍋","燒烤","小龍蝦","牛排"], games:["勁舞團(tuán)","QQ飛車(chē)","超級(jí)瑪麗","無(wú)人深空"], films:["《教父》","《狩獵》","《禁閉島》","《聚焦》"] } } } </script> <style> .container { display: flex; justify-content: space-around; } img,video{ width: 100%; } </style>
修改 Category.vue
<template> <div class="category"> <h4>{{title}}分類(lèi)</h4> <slot name="center">這是一些默認(rèn)值,沒(méi)有內(nèi)容時(shí)展示</slot> <slot name="footer">這是一些默認(rèn)值,沒(méi)有內(nèi)容時(shí)展示</slot> </div> </template> <script> export default { name: "Category", props:["title"] } </script> <style scoped> .category{ background-color: skyblue; width: 200px; height: 300px; } h4{ 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="游戲" :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" >單機(jī)游戲</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" >網(wǎng)絡(luò)游戲</a> </div> </Category> <Category title="電影"> <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" >經(jīng)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" >熱門(mén)</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" >推薦</a> </div> </template> </Category> </div> </template> <script> import Category from "@/components/Category"; export default { name: 'App', components: {Category}, data(){ return{ foods:["火鍋","燒烤","小龍蝦","牛排"], games:["勁舞團(tuán)","QQ飛車(chē)","超級(jí)瑪麗","無(wú)人深空"], films:["《教父》","《狩獵》","《禁閉島》","《聚焦》"] } } } </script> <style> .container,.foot { display: flex; justify-content: space-around; } img,video{ width: 100%; } </style>
如果數(shù)據(jù)在 Category 中,但需要展示不同的形式,我們可以通過(guò)插槽傳值,類(lèi)似于我們從父組件向子組件傳值:
<template> <div class="category"> <h4>{{ title }}分類(lèi)</h4> <slot :games="games" :msg="hello"></slot> </div> </template> <script> export default { name: "Category", props: ["title"], data() { return { games: ["勁舞團(tuán)", "QQ飛車(chē)", "超級(jí)瑪麗", "無(wú)人深空"] } } } </script> <style scoped> .category { background-color: skyblue; width: 200px; height: 300px; } h4 { text-align: center; background-color: orange; } </style>
App 中在子組件中使用 <template> 包裹要展示的內(nèi)容,標(biāo)簽中可以使用scope接收傳過(guò)來(lái)的值
<template> <div class="container"> <Category title="游戲"> <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="游戲"> <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="游戲"> <template v-slot="{games,msg}"> <h5 v-for="(g,index) in games" :key="index">{{ g }}</h5> <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>
1.作用:讓父組件可以向子組件指定位置插入 html 結(jié)構(gòu),也是一種組件問(wèn)通信的方式,適用于父組件==>子組件
2.分類(lèi):默認(rèn)插槽、具名插槽、作用域插槽
3.使用方式:
默認(rèn)插槽
父組件中:
<Category> <div>html結(jié)構(gòu)</div> <Category>
子組件中:
<template> <div> <!--定義插槽--> <slot>插槽默認(rèn)內(nèi)容...</slot> </div> </templdte>
具名插槽
父組件中:
<Category> <template slot="center"> <div>html結(jié)構(gòu)1</div> </template> <tenplate v-slot:footer> <div>html結(jié)構(gòu)2</div> </template> </Category>
子組件中:
<template> <div> <1--定義插槽--> <slot name="center">插槽默認(rèn)內(nèi)容...</slot> <slot name="footer”>插槽默認(rèn)內(nèi)容...</slot> </div> </template>
作用域插槽
1.理解:數(shù)據(jù)在組件的自身,但根據(jù)數(shù)據(jù)生成的結(jié)構(gòu)需要組件的使用者來(lái)決定,(games 數(shù)據(jù)在 Category 組件中,但使用數(shù)據(jù)所遍歷出來(lái)的結(jié)構(gòu)由 App 組件決定)
2.具體編碼:
父組件中:
<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h5標(biāo)題--> <h5 v-for="g in scopeData" :key="g">{{g}}</h5> </template> </Category>
子組件中:
<template> <div> <slot :games="games"></slot> </div> </template> <script> export default{ name: "Category ', props: ["title"], //數(shù)據(jù)在子組件自身 data() { return{ games:['紅色警戒,穿越火線',"勁舞團(tuán)",超級(jí)瑪麗"] } } }</script>
注意:scope和slot-scope過(guò)時(shí)了,可以使用v-slot
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