从嵌套数组获取数据的更快或更简单的方法

function getDataFromNestedArray(arr, target) {
  for (let i = 0; i < arr.length; i++) {
    if (Array.isArray(arr[i])) {
      const result = getDataFromNestedArray(arr[i], target);
      if (result !== undefined) {
        return result;
      }
    } else if (arr[i] === target) {
      return arr[i];
    }
  }
  return undefined;
}

const nestedArray = [1, 2, [3, 4, [5, 6]]];
const target = 5;
const result = getDataFromNestedArray(nestedArray, target);
console.log(result); // Output: 5

const nestedArray = [1, 2, [3, 4, [5, 6]]];
const target = 5;

const flattenedArray = nestedArray.flat(Infinity);
const result = flattenedArray.includes(target) ? target : undefined;
console.log(result); // Output: 5