如何在react js中将对象转换为字符串

const obj = { name: 'John', age: 25 };
const jsonString = JSON.stringify(obj);
console.log(jsonString);

{"name":"John","age":25}

const obj = { name: 'John', age: 25, address: { city: 'New York', country: 'USA' } };
const jsonString = JSON.stringify(obj, ['name', 'age'], 2);
console.log(jsonString);

{
  "name": "John",
  "age": 25
}