Konami code Marionette Behavior

konami-marionette-behavior.js

'use strict';

var Marionette = require('backbone.marionette'),
    Konami;
    
Konami = Marionette.Behavior.extend({
    defaults: {
        code : [38, 38, 40, 40, 37, 39, 37, 39, 66, 65]
    },
    events: {
	'keyup': '_konami',
    },
    initialize: function() {
        this.cache = [];
    },
    _konami: function(e) {
	if (this.options.code.length > this.cache.push(e.which)) return;

	if (this.options.code.length < this.cache.length) this.cache.shift();

	if (this.options.code.toString() !== this.cache.toString()) return;

        this.view.trigger('konami');
	this.view.triggerMethod('konami');
    }
});

module.exports = Konami;

/**
 * Usage:
 * 
 * var View = Marionette.ItemView.extend({
 *     ...
 *     behaviors: {
 *        Konami: {
 *            behaviorClass: Konami
 *        }
 *     },
 *     onKonami: function() {
 *          // easter egg!
 *     } 
 * });
 */

thanks, yeah i made a vanilla JS version like a year ago, I figured why not port it over to Marionette 😄