如何从嵌套数组中获取值？JSON

function getValueFromNestedArray(arr, target) {
  for (let i = 0; i < arr.length; i++) {
    if (Array.isArray(arr[i])) {
      const result = getValueFromNestedArray(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 targetValue = 5;
const result = getValueFromNestedArray(nestedArray, targetValue);
console.log(result); // 输出：5

function getValueFromNestedArray(arr, target) {
  const stack = [...arr];
  while (stack.length > 0) {
    const item = stack.pop();
    if (Array.isArray(item)) {
      stack.push(...item);
    } else if (item === target) {
      return item;
    }
  }
  return undefined;
}

const nestedArray = [1, 2, [3, 4, [5, 6]]];
const targetValue = 5;
const result = getValueFromNestedArray(nestedArray, targetValue);
console.log(result); // 输出：5