Vue父子組的傳值通過props,$emit

父組件向子組件傳值，傳遞事件

1、將posts的值通過post，傳遞給子組件 ;
2、將doSomeThing事件通過my-event傳遞給子組件

父組件
<childComponent @my-event="doSomeThing()" :post="posts"></childComponent>

data() {
    return {
      posts: [
        {
          id: 1,
          title: "aaa"
        },
        {
          id: 2,
          title: "bbb"
        }
      ]
    };
  },
  methods: {
    doSomeThing() {
      alert("doSomeThing");
    }
  }

子組件

<template>
  <div>
    <h3>{{post.title}}</h3>
    <button @click="emitMyEvent()">點擊子組件</button>
  </div>
</template>
<script>
export default {
  props: ["post"],
  data() {
    return {};
  },
  methods: {
    emitMyEvent() {
      this.$emit("my-event");
    }
  }
};
</script>