
let arr1 = [1, 2, 3];
let arr2 = [2, 3, 4];
// 차집합
let difference = arr1.filter(x => !arr2.includes(x);
// 교집합
let difference = arr1.filter(x => arr2.includes(x);
// 배타적논리합
let difference = arr1.filter(x => !includes(x))
.concat(arr2.filter(x => !arr1.includes(x)));
// 교집합

// 차집합
// 배타적논리합
