定制prop和event
用作双向数据绑定
默认情况下, 一个组件上的v-model会:
将 value用作 prop
将 input用作 event
语法:
model: {prop?: string, event?: string}
<!--
* @FilePath: \hello-typescript\src\components\Child.vue
-->
<template>
<div style="border: 1px solid black;padding: 2rem;">
<h1>Child Component</h1>
<input type="text" :value="value" @input="changed" placeholder="please write something..."/>
</div>
</template>
<script lang="ts">
import { Component, Model, Vue, Emit, Inject, Prop } from 'vue-property-decorator'
@Component
export default class Chlid extends Vue {
@Model('input') value!: boolean
@Emit('input')
changed (event: any) {
return event.target.value
}
}
</script>
<!--
* @FilePath: \hello-typescript\src\views\Parent.vue
-->
<template>
<div>
<h1>Parent</h1>
<Child v-model="content" @input="childChange"></Child><br/>
<p>
<b>
Child 与 Parent 绑定的内容 => {{content}}
</b>
</p>
</div>
</template>
<script lang="ts">
import { Component, Vue, Provide } from 'vue-property-decorator'
import Child from '@/components/Child.vue'
@Component({
components: {
Child
}
})
export default class Parent extends Vue {
content = '初始化内容'
private childChange (val: any, event: any) {
window.console.log('val', val)
window.console.log('event', event)
}
}
</script>