[javascript]2つのarrayで完全一致と部分一致

たまに使いたくなるけど、書き方忘れるので備忘録。

変数

const baseArray = [1,2,3,4,5,6,7,8,9,10]
const target1   = [10,9,8,7,6,5,4,3,2,1]
const target2   = [1,2,3]
const target3   = [11]

完全一致(every)

baseArray.every((num) => target1.includes(num))
> true

baseArray.every((num) => target2.includes(num))
> false

baseArray.every((num) => target3.includes(num))
> false

部分一致(some)

baseArray.some((num) => target1.includes(num))
> true

baseArray.some((num) => target2.includes(num))
> true

baseArray.some((num) => target3.includes(num))
> false

参考

• JavaScript の Array.some と Array.includes の使い分け、値・参照型の動作の違い