组合数组对象中的键值

// 用户信息数组
const users = [
  { id: 1, name: '张三', age: 25 },
  { id: 2, name: '李四', age: 30 },
  { id: 3, name: '王五', age: 28 }
];

// 用户订单信息数组
const orders = [
  { userId: 1, product: '手机', price: 2000 },
  { userId: 2, product: '电视', price: 5000 },
  { userId: 3, product: '笔记本', price: 6000 }
];

// 根据用户ID进行组合
const combinedArray = users.map(user => {
  const order = orders.find(order => order.userId === user.id);
  return { ...user, ...order };
});

console.log(combinedArray);

[
  { id: 1, name: '张三', age: 25, userId: 1, product: '手机', price: 2000 },
  { id: 2, name: '李四', age: 30, userId: 2, product: '电视', price: 5000 },
  { id: 3, name: '王五', age: 28, userId: 3, product: '笔记本', price: 6000 }
]