原始方法
App.vue
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| <template>
<div id="app">
<Father :age="age" @setage="setAge"/>
</div>
</template>
<script>
import Father from './components/Father.vue'
export default {
data(){
return{
age:"18"
}
},
name: 'app',
components: {
Father
},
methods:{
setAge(res){
this.age = res;
}
}
}
</script>
<style>
</style>
|
Father.vue
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| <template>
<div class="hello">
{{age}}
</div>
</template>
<script>
export default {
name: 'Father',
props:{
age:String
},
methods:{
},
mounted(){
this.$emit("setage","123");
}
}
</script>
<style scoped>
</style>
|
使用.sync修饰符
这里注意我们的事件名称被换成了update:age
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| <template>
<div class="hello">
{{age}}
</div>
</template>
<script>
export default {
name: 'Father',
props:{
age:String
},
methods:{
},
mounted(){
this.$emit("update:age","123");
}
}
</script>
<style scoped>
</style>
|