将点符号形式的Javascript对象引用转换为字符串

const obj = {
  name: 'John',
  age: 30,
  city: 'New York'
};

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

{"name":"John","age":30,"city":"New York"}

const obj = {
  name: 'John',
  age: 30,
  city: 'New York'
};

const jsonString = JSON.stringify(obj, (key, value) => {
  if (key === 'age') {
    return value + 10; // 将age的值加上10
  }
  return value;
});

console.log(jsonString);

{"name":"John","age":40,"city":"New York"}

const obj = {
  name: 'John',
  age: 30,
  city: 'New York'
};

const jsonString = JSON.stringify(obj, null, 2); // 使用2个空格进行缩进

console.log(jsonString);

{
  "name": "John",
  "age": 30,
  "city": "New York"
}