Javascript JSON横向分层输出

function flattenJSON(json, prefix = '') {
  let result = {};
  
  for (let key in json) {
    if (typeof json[key] === 'object' && json[key] !== null) {
      let flattened = flattenJSON(json[key], prefix + key + '.');
      result = { ...result, ...flattened };
    } else {
      result[prefix + key] = json[key];
    }
  }
  
  return result;
}

// 示例JSON数据
let json = {
  name: 'John',
  age: 30,
  address: {
    street: '123 Main St',
    city: 'New York',
    country: 'USA'
  }
};

// 调用函数进行横向分层输出
let flattenedJSON = flattenJSON(json);

console.log(flattenedJSON);

{
  "name": "John",
  "age": 30,
  "address.street": "123 Main St",
  "address.city": "New York",
  "address.country": "USA"
}