如何在javascript中将数据从旧的json复制到新的json？

const oldJson = {
  name: 'Alice',
  age: 25,
  hobbies: ['reading', 'traveling']
};

const newJson = {};

Object.assign(newJson, oldJson);

console.log(newJson); // 输出: { name: 'Alice', age: 25, hobbies: ['reading', 'traveling'] }

const oldJson = {
  name: 'Alice',
  age: 25,
  hobbies: ['reading', 'traveling']
};

const newJson = { ...oldJson };

console.log(newJson); // 输出: { name: 'Alice', age: 25, hobbies: ['reading', 'traveling'] }

const oldJson = {
  name: 'Alice',
  age: 25,
  hobbies: ['reading', 'traveling'],
  address: {
    city: 'New York',
    zip: '10001'
  }
};

const newJson = JSON.parse(JSON.stringify(oldJson));

console.log(newJson); // 输出: { name: 'Alice', age: 25, hobbies: ['reading', 'traveling'], address: { city: 'New York', zip: '10001' } }

const oldJson = {
  name: 'Alice',
  address: {
    city: 'New York',
    zip: '10001'
  }
};

const newJson = Object.assign({}, oldJson);

newJson.address.city = 'Los Angeles';

console.log(oldJson.address.city); // 输出: 'Los Angeles'，因为浅复制导致新旧对象共享嵌套对象

const oldJson = {
  name: 'Alice',
  address: {
    city: 'New York',
    zip: '10001'
  }
};

const newJson = JSON.parse(JSON.stringify(oldJson));

newJson.address.city = 'Los Angeles';

console.log(oldJson.address.city); // 输出: 'New York'，因为深复制创建了新的嵌套对象