将变量与部分数组路径一起使用以输出数组值

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

function getValue(data, rowIndex, colIndex) {
  if (rowIndex >= 0 && rowIndex < data.length && colIndex >= 0 && colIndex < data[rowIndex].length) {
    return data[rowIndex][colIndex];
  } else {
    return 'Index out of bounds';
  }
}

const rowIndex = 1;
const colIndex = 2;
console.log(getValue(data, rowIndex, colIndex)); // 输出: 6

function getValue(data, rowIndex, colIndex) {
  if (rowIndex >= 0 && rowIndex < data.length && colIndex >= 0 && colIndex < data[rowIndex].length) {
    return data[rowIndex][colIndex];
  } else {
    return 'Index out of bounds';
  }
}

function getValue(data, rowIndex, colIndex) {
  if (typeof rowIndex !== 'number' || typeof colIndex !== 'number') {
    return 'Invalid index type';
  }
  if (rowIndex >= 0 && rowIndex < data.length && colIndex >= 0 && colIndex < data[rowIndex].length) {
    return data[rowIndex][colIndex];
  } else {
    return 'Index out of bounds';
  }
}