js 遍历多维数组

function traverseMultiDimensionalArray(arr) {
  arr.forEach(element => {
    if (Array.isArray(element)) {
      traverseMultiDimensionalArray(element);
    } else {
      console.log(element);
    }
  });
}

const multiArray = [[1, 2], [3, [4, 5]], 6];
traverseMultiDimensionalArray(multiArray);

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

for (let i = 0; i < twoDArray.length; i++) {
  for (let j = 0; j < twoDArray[i].length; j++) {
    console.log(twoDArray[i][j]);
  }
}