https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes ↩
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every ↩
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some ↩
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find ↩
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex ↩****