function Utils () {} Utils.prototype = { constructor: Utils, getRandomProperty: function (obj) { var keys = Object.keys(obj); return obj[keys[ keys.length * Math.random() << 0]]; }, shuffleArray: function (array) { var currentIndex = array.length, temporaryValue, randomIndex ; // While there remain elements to shuffle... while (0 !== currentIndex) { // Pick a remaining element... randomIndex = Math.floor(Math.random() * currentIndex); currentIndex -= 1; // And swap it with the current element. temporaryValue = array[currentIndex]; array[currentIndex] = array[randomIndex]; array[randomIndex] = temporaryValue; } return array; } }; if (typeof(module) != 'undefined') { module.exports = Utils; }