如何将对象转换为JSON表示形式

JSON.stringify(value[, replacer[, space]])

const obj = {
  name: 'John',
  age: 30,
  hobbies: ['reading', 'coding', 'traveling'],
  address: {
    city: 'New York',
    country: 'USA'
  }
};

const jsonString = JSON.stringify(obj);
console.log(jsonString);

{"name":"John","age":30,"hobbies":["reading","coding","traveling"],"address":{"city":"New York","country":"USA"}}