vue3使用父组件传值给子组件
时间: 2023-08-31 19:07:46 浏览: 143
vue父组件给子组件传值
在Vue3中,可以使用props属性将数据从父组件传递给子组件。在引用\[1\]的例子中,父组件通过将parentMethod作为props传递给子组件,子组件可以通过调用该方法将数据传递回父组件。具体实现如下:
父组件:
```html
<template>
<request-gen v-if="showGenFlag" :parentMethod="childValueHandlingMethod" />
</template>
<script lang="ts" setup>
import { ref } from 'vue'
import { subRequest } from '@cp/MyTypes'
const subRequests = ref<subRequest\[\]>(\[\])
const childValueHandlingMethod = (request: subRequest) => {
subRequests.value.push(request)
}
</script>
```
子组件:
```html
<template>
<el-form :inline="true" :model="request" class="demo-form-inline">
<el-form-item>
<target-type-drop-down />
</el-form-item>
<el-form-item>
<include-type />
</el-form-item>
<el-form-item label="Include">
<el-input v-model="request.number" placeholder="3" />
</el-form-item>
<el-form-item>
<el-button type="primary" @click="parentMethod(request)">Generate Req</el-button>
</el-form-item>
</el-form>
</template>
<script lang="ts" setup>
import { ref, defineProps } from 'vue'
import { subRequest } from '@cp/MyTypes'
const request = ref<subRequest>({ number: 3 })
defineProps({
parentMethod: {
type: Function,
default: () => {},
},
})
</script>
```
在上述代码中,父组件通过将childValueHandlingMethod方法作为parentMethod的props传递给子组件。子组件可以通过点击按钮触发parentMethod方法,并将request数据作为参数传递给父组件。
希望这个例子能够帮助你理解如何在Vue3中使用父组件传值给子组件。
#### 引用[.reference_title]
- *1* *2* *3* [Vue3 子组件向父组件传值的方法](https://blog.csdn.net/thonmsneee98/article/details/128430195)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down1,239^v3^insert_chatgpt"}} ] [.reference_item]
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