vue 子元件和父元件傳值
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1.添加子元件
1.父元件修改
<template>
<!-- v-for 表情表示循環輸出資料:必須要有父類dom,否則會出錯的-->
<div>
<div v-for="item in pageDate">
<span v-text="item.id"></span>
<span v-text="item.url"></span>
<span v-text="item.href"></span>
<button @click="detele()"> 删除資料</button>
</div>
<button @click="add"> 添加資料</button>
<button @click="update"> 修改資料</button>
<child></child>
</div>
</template>
<script>
var pageDate = [
{
id: 10000, //該廣告的ID
url: 'http://163.com', //廣告圖檔路徑
href: 'http://baidu.com'//點選跳轉連接配接
},
{
id: 10002, //該廣告的ID
url: 'http://163.com', //廣告圖檔路徑
href: 'http://baidu.com'//點選跳轉連接配接
}
]
import child from "../home/children/456"
export default {
data () {
return {
pageDate
}
},
props: {},
computed: {},
components: {child},
methods: {
add: function () {
this.pageDate.push({
id: 10003, //該廣告的ID
url: 'http://163.com', //廣告圖檔路徑
href: 'http://baidu.com'//點選跳轉連接配接
})
},
update: function () {
this.pageDate[1].id = 10000000000000000000
},
detele: function (index) {
this.pageDate.splice(index, 1)
}
},
watch: {},
}
</script>
<style scoped>
</style>
2.在此目錄下建立child檔案夾,在child檔案夾下建立456.vue檔案
<template>
<div class="child_vue">
<p >這是孩子vue</p>
</div>
</template>
<script>
export default {
data () {
return {}
},
props: {},
computed: {},
components: {},
methods: {},
watch: {},
}
</script>
<style scoped>
</style>
2.父類元件給子類元件傳遞參數
1.修改template的代碼:
<child :data="childDate"></child>
2.修改孩子元件456.vue的template代碼:
<template>
<div class="child_vue">
<p >這是孩子vue</p>
<span v-text="data.id"></span>
<span v-text="data.url"></span>
<span v-text="data.href"></span>
</div>
</template>v
3.修改孩子元件456.vue的props代碼:
props: ['data']
注意. 父類的 :data 和子元件的 props: ['data'] 名字要保持一緻,父類增删改子類資料和修改自己的資料是一樣使用的
3.子類元件給父類元件傳遞參數
1.子類元件:
<template>
<div class="child_vue">
<p >這是孩子vue</p>
<span v-text="data.id"></span>
<span v-text="data.url"></span>
<span v-text="data.href"></span>
<input v-model="username" @change="setUser">
</div>
</template>
<script>
var message =
{
username:' '
}
export default {
data () {
return {message}
},
props: ['data'],
computed: {},
components: {},
methods: {
setUser:function () {
this.$emit('getChildData',this.username)
}
},
watch: {},
}
</script>
<style scoped>
</style>
2.父類元件
<template>
<!-- v-for 表情表示循環輸出資料:必須要有父類dom,否則會出錯的-->
<div>
<div v-for="item in pageDate">
<span v-text="item.id"></span>
<span v-text="item.url"></span>
<span v-text="item.href"></span>
<button @click="detele()"> 删除資料</button>
</div>
<button @click="add"> 添加資料</button>
<button @click="update"> 修改資料</button>
<child :data="childDate" @getChildData="getUser"></child>
<p>{{user}}</p>
</div>
</template>
<script>
var pageDate = [
{
id: 10000, //該廣告的ID
url: 'http://163.com', //廣告圖檔路徑
href: 'http://baidu.com'//點選跳轉連接配接
},
{
id: 10002, //該廣告的ID
url: 'http://163.com', //廣告圖檔路徑
href: 'http://baidu.com'//點選跳轉連接配接
}
]
var childDate =
{
id: 10002, //該廣告的ID
url: 'http://163.com', //廣告圖檔路徑
href: 'http://baidu.com'//點選跳轉連接配接
}
import child from "../home/children/456"
export default {
data () {
return {
pageDate,childDate,user:""
}
},
props:{},
computed: {},
components: {child},
methods: {
add: function () {
this.pageDate.push({
id: 10003, //該廣告的ID
url: 'http://163.com', //廣告圖檔路徑
href: 'http://baidu.com'//點選跳轉連接配接
})
},
update: function () {
this.childDate.id = 10000000000000000000
},
detele: function (index) {
this.pageDate.splice(index, 1)
},
getUser:function (child_username) {
this.user=child_username
}
},
watch: {},
}
</script>
<style scoped>
</style>