将第二个参数合并到递归函数中并打印结果

function mergeRecursive(recursiveParam, mergeParam) {
  if (Array.isArray(recursiveParam)) {
    recursiveParam.forEach((item, index) => {
      recursiveParam[index] = mergeParam;
    });
  } else if (typeof recursiveParam === 'object') {
    for (let key in recursiveParam) {
      recursiveParam[key] = mergeParam;
    }
  } else {
    recursiveParam = mergeParam;
  }

  if (Array.isArray(recursiveParam) || typeof recursiveParam === 'object') {
    for (let key in recursiveParam) {
      mergeRecursive(recursiveParam[key], mergeParam);
    }
  } else {
    console.log(recursiveParam);
  }
}

// 示例调用
const recursiveParam = [1, [2, [3, 4]]];
const mergeParam = 'merged';

mergeRecursive(recursiveParam, mergeParam);