Konami Code using jQuery & Lodash
(function konami(){
var keys = {
38: 'up',
40: 'down',
37: 'left',
39: 'right',
66: 'b',
65: 'a'
};
var konami_code = ['up','up','down','down','left','right','left','right','b','a'];
var keydown_series = [];
var onKeyDown = function(e){
if( !keys.hasOwnProperty(e.which) ){
keydown_series = [];
return;
}
keydown_series.push(keys[e.which]);
// console.log(keydown_series);
if( !_.isMatch(konami_code, keydown_series) ){
keydown_series = [];
return;
}
if( _.isEqual(konami_code, keydown_series) ){
keydown_series = [];
unlocked();
}
};
var unlocked = function(){
console.log('Cheers! ');
};
$(window).on('keydown', onKeyDown);
})();