javascript - 计算两个数组之间每个元素的数学差异

Question

给定两个长度相同的数组，返回一个包含两个数组之间每个元素的数学差异的数组。

示例:

a = [3, 4, 7]

b = [3, 9, 10 ]

结果:c = [(3-3), (9-4), (10,7)] 使得c = [0, 5 3]

let difference = []

function calculateDifferenceArray(data_one, data_two){
    let i = 0
    for (i in data_duplicates) {
        difference.push(data_two[i]-data_one[i])
    }
    console.log(difference)
    return difference
}
calculateDifferenceArray((b, a))

它确实有效。

我想知道是否有更优雅的方法来实现相同的目标

Answer 1

使用map如下:

const a = [3, 4, 7]
const b = [3, 9, 10]
const c = b.map((e, i) => e - a[i])
// [0, 5, 3]