如何在vue.js中创建嵌套绑定作用域？

<template>
  <div>
    <h1>{{ message }}</h1>
    <ChildComponent :child-message="message"></ChildComponent>
  </div>
</template>

<script>
import ChildComponent from './ChildComponent.vue';

export default {
  data() {
    return {
      message: 'Hello from parent component',
    };
  },
  components: {
    ChildComponent,
  },
};
</script>

<template>
  <div>
    <h2>{{ childMessage }}</h2>
    <button @click="updateParentMessage">Update Parent Message</button>
  </div>
</template>

<script>
export default {
  props: ['childMessage'],
  methods: {
    updateParentMessage() {
      this.$emit('update-message', 'Updated message from child component');
    },
  },
};
</script>