Nitish's deck problem

deck.js

var Deck = (function() {

	var cards = [];

	var settings = {
		deckSize: 52,
		cardSets: 4,
		uniqueSets: function() { return this.deckSize / this.cardSets }
	};

	return {  

		create: function() {

			cards = []; // destroy current deck

			for ( var i = 1; i <= settings.uniqueSets(); i++ ) {

				for( var j = 1; j <= settings.cardSets; j++ ) {

					var card = '';

					switch(i) {
						case 1:
							card = 'A';
							break;
						case 11:
							card = 'J';
							break;
						case 12:
							card = 'Q';
							break;
						case 13:
							card = 'K';
							break;
						default: 
							card = i;
					}

					cards.push(card);
				}
			}

		},

		shuffle: function() {

			var currentIndex = cards.length, temporaryValue, randomIndex;

			  while (0 !== currentIndex) {

			    randomIndex = Math.floor(Math.random() * currentIndex);
			    currentIndex -= 1;

			    temporaryValue = cards[currentIndex];
			    cards[currentIndex] = cards[randomIndex];
			    cards[randomIndex] = temporaryValue;
			  }

		},

		cut: function() {
			var firstHalf = cards.slice(0, cards.length/2);
			var secondHalf = cards.slice(cards.length/2, cards.length);

			cards = secondHalf.concat(firstHalf);
		},

		deal: function() {
			return cards.shift();
		},
		dealRandom: function() {
			var randomNumber = Math.floor(Math.random() * cards.length);
			return cards.splice(randomNumber, 1)[0];
			 
		}

	};

})();