Javascript algorithm to find elements in array that are not in another array

Question

I\'m looking for a good algorithm to get all the elements in one array that are not elements in another array. So given these arrays:

var x = [\"a\",\"b\",\         


        

Answer 1

in ES6 simply

const x = ["a", "b", "c", "t"];
const y = ["d", "a", "t", "e", "g"];

console.log( y.filter(e => !x.includes(e)) );

(another option is y.filter(e => x.indexOf(e)===-1) )