如何减去两次矩js？

// 定义两个矩阵
const matrix1 = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];
const matrix2 = [[9, 8, 7], [6, 5, 4], [3, 2, 1]];

// 函数用于减去两个矩阵
function subtractMatrices(matrix1, matrix2) {
  const result = [];
  
  // 遍历矩阵的每个元素，进行减法运算
  for (let i = 0; i < matrix1.length; i++) {
    const row = [];
    for (let j = 0; j < matrix1[i].length; j++) {
      row.push(matrix1[i][j] - matrix2[i][j]);
    }
    result.push(row);
  }
  
  return result;
}

// 调用函数并打印结果
const resultMatrix = subtractMatrices(matrix1, matrix2);
console.log(resultMatrix);