vipAllDay/vue/vue高阶/comm/src/components/Demo1.vue

<template>
  <div class="demo1">
    组件一
    <button @click="handlerMain">获取内容</button>
  </div>
</template>

<script>
export default {
    methods:{
        handlerMain() {
           let part1 =  this.$emit("aa");
        //    console.log(part1);
        }
    }
}
</script>

<style>

</style>