按嵌套级别从嵌套对象属性中提取数组

function extractArraysFromNestedObject(obj) {
  const result = [];

  function extractArrays(obj) {
    for (let key in obj) {
      if (Array.isArray(obj[key])) {
        result.push(...obj[key]);
      } else if (typeof obj[key] === 'object') {
        extractArrays(obj[key]);
      }
    }
  }

  extractArrays(obj);
  return result;
}

const nestedObject = {
  a: 1,
  b: [2, 3],
  c: {
    d: [4, 5],
    e: {
      f: [6, 7]
    }
  }
};

const extractedArray = extractArraysFromNestedObject(nestedObject);
console.log(extractedArray);  // 输出: [2, 3, 4, 5, 6, 7]