Javascript如何获得嵌套在数组中的数组的长度，即在对象中？

function getNestedArrayLength(obj) {
  let count = 0;
  
  if (Array.isArray(obj)) {
    for (let i = 0; i < obj.length; i++) {
      if (Array.isArray(obj[i])) {
        count += getNestedArrayLength(obj[i]);
      }
    }
    count += obj.length;
  }
  
  return count;
}

// 示例用法
const nestedArray = [1, [2, 3], [4, [5, 6]]];
const length = getNestedArrayLength(nestedArray);
console.log(length); // 输出：6