javascript - How to avoid TypeError when passing Object from parent component to child component in vue?

Question

父组件
<father :data="data"></father>
 data() {
      return {
        data: {}
      }
 }

 mounted() {
   this.data = {
     title: '标题'
   }
 }

 子组件
 <son>{{data.title}}<son>
  props: {
  data: Object,
}

报错: title属性 undefined

Answer 1

<son v-if="data">{{data.title}}<son>

Answer 2

Your initial data should be given the title attribute

Answer 3

The writing method is no problem, https://jsfiddle.net/stardew/...