如何查找某个对象值是否包含在另一个对象值中

const obj1 = { name: 'Alice', age: 25 };
const obj2 = { name: 'Bob', age: 30, city: 'New York' };

console.log('name' in obj1);  // true
console.log('name' in obj2);  // true
console.log('city' in obj1);  // false
console.log('city' in obj2);  // true

const obj1 = { name: 'Alice', age: 25 };
const obj2 = { name: 'Bob', age: 30, city: 'New York' };

console.log(obj1.hasOwnProperty('name'));  // true
console.log(obj2.hasOwnProperty('name'));  // true
console.log(obj1.hasOwnProperty('city'));  // false
console.log(obj2.hasOwnProperty('city'));  // true

const obj1 = { name: 'Alice', age: 25 };
const obj2 = { name: 'Bob', age: 30, city: 'New York' };

const str1 = JSON.stringify(obj1);
const str2 = JSON.stringify(obj2);

console.log(str1.includes('name'));  // true
console.log(str2.includes('name'));  // true
console.log(str1.includes('city'));  // false
console.log(str2.includes('city'));  // true