Konami code js, jQuery

easyKonami.js

var winner = ()=>{/*do what ever you want*/};
var konami = [38, 38, 40, 40, 37, 39, 37, 39, 66, 65],
i = 0,
l = konami.length - 1;
(document).keyup(function(e){
    i = (konami[i] == e.keyCode) ? ((i == l) ? 0 && winner() : i + 1) : 0;
});