Set Collection

set.js

let A = new Set([1,2,6,4])
let B = new Set([1,6,7,8])

//Union
let union = [...A, ...B]
console.log("Union : ", union)

//Sliced
let sliced = [...A].filter(a => B.has(a))
console.log("Sliced : ", sliced)

//Unique 
let unique = new Set([...A, ...B])
console.log("Unique : ", [...unique])