使用来自两个数组的信息来计算第三个数组的内容

const arr1 = [1, 2, 3];
const arr2 = [4, 5, 6];

const arr3 = arr1.map((value, index) => value + arr2[index]);

console.log(arr3); // 输出: [5, 7, 9]

const arr1 = [1, 2, 3];
const arr2 = [4, 5, 6];

const arr3 = arr1.map((value, index) => value * arr2[index]);

console.log(arr3); // 输出: [4, 10, 18]

const arr1 = ['a', 'b', 'c'];
const arr2 = [1, 2, 3];

const arr3 = arr1.map((value, index) => `${value}${arr2[index]}`);

console.log(arr3); // 输出: ['a1', 'b2', 'c3']

const arr1 = [1, 2, 3];
const arr2 = [4, 5];

const maxLength = Math.max(arr1.length, arr2.length);
const arr3 = [];

for (let i = 0; i < maxLength; i++) {
  const value1 = arr1[i] || 0;
  const value2 = arr2[i] || 0;
  arr3.push(value1 + value2);
}

console.log(arr3); // 输出: [5, 7, 3]