Playing Cards in JavaScript

playingcards.js

// Create a function for shuffling the elements in an array
Array.prototype.shuffle = function(repeat) {

	repeat = (repeat === undefined) ? 1 : repeat;

	for (var i = 0; i < repeat; i++) {

		// Implement the Fisher-Yates Shuffle
		var currentIndex = this.length, temporaryValue, randomIndex;

		// While there remains 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 = this[currentIndex];
			this[currentIndex] = this[randomIndex];
			this[randomIndex] = temporaryValue;

		}

	}

	return this;

};


// Let's have some fun

// Establish the values and suits in a deck of playing cards
var ranks = ['A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'];
var suits = ['♠', '♡', '♢', '♣'];

// Adds all 52 standard cards to a deck
var resetDeck = function(deck) {

	deck = [];

	suits.forEach(function(suit) {
		ranks.forEach(function(rank) {
			deck.push(rank + suit);
		});
	});

	return deck;

};

// Deals a given number of cards from the top of the deck
var deal = function(limit) {

	return deck.splice(0, limit);

};


// Let's play a game

// Start with five empty hands
var hand1 = hand2 = hand3 = hand4 = hand5 = [];
var hands = {
	0: hand1,
	1: hand2,
	2: hand3,
	3: hand4,
	4: hand5
};

// Reset and shuffle a deck of cards
var deck = resetDeck().shuffle(7);

// Deal five cards to each player
hands.forEach(function(hand) {

	hand = deal(5);

});