<template>
  <view>
    <button @click="click" class="call-parent-btn">调用父组件事件</button>
  </view>
</template>

<script>
export default {
  emits: ['callback'],
  methods: {
    click () {
      this.$emit('callback', `${Date.now()}`)
    }
  }
}
</script>

<style scoped>

</style>