(REACT)如何将状态的值设置为具有也是对象的属性的对象？

constructor(props) {
  super(props);
  this.state = {
    person: {
      name: "",
      age: ""
    }
  };
}

handleChange(event) {
  const { name, value } = event.target;
  this.setState(prevState => ({
    person: {
      ...prevState.person,
      [name]: value
    }
  }));
}

render() {
  const { name, age } = this.state.person;
  
  return (
    <div>
      <input
        type="text"
        name="name"
        value={name}
        onChange={this.handleChange}
      />
      <input
        type="text"
        name="age"
        value={age}
        onChange={this.handleChange}
      />
    </div>
  );
}