Ember.KonamiCode

konami.js

Ember.KonamiCode = Ember.Mixin.create({
  konami: [38, 38, 40, 40, 37, 39, 37, 39, 66, 65, 13],
  currentIndex: 0,
  keyPress: function(event) {
    this._super(event);
    var index = this.get('currentIndex');
    if (event.keyCode === this.konami[index]) {
      if (index === 10) {
        this.success();
      } else {
        this.set('currentIndex', index + 1);
      }
    } else {
      this.set('currentIndex', 0);
    }
  }
});