Javascript indexOf用于未找到数组的数组数组

const nestedArray = [
  [1, 2, 3],
  [4, 5, 6],
  [7, 8, 9]
];

function findElementInNestedArray(array, element) {
  for (let i = 0; i< array.length; i++) {
    const innerArray = array[i];
    for (let j = 0; j< innerArray.length; j++) {
      if (innerArray[j] === element) {
        return [i, j];
      }
    }
  }
  return null;
}

const result = findElementInNestedArray(nestedArray, 5);
console.log(result); // 输出：[1, 1]