如何从嵌套数组中查找数据？

function findData(target, nestedArray) {
  for (let i = 0; i < nestedArray.length; i++) {
    const current = nestedArray[i];
    if (Array.isArray(current)) {
      const result = findData(target, current);
      if (result !== null) {
        return result;
      }
    } else if (current === target) {
      return current;
    }
  }
  return null;
}

// 示例用法
const nestedArray = [1, [2, [3, 4]]];
const target = 3;
const result = findData(target, nestedArray);
console.log(result); // 输出 3