Card class

function Card(val,st) {
    this.value = val;
    this.suit = st;
}

Card.prototype.getValue = function() {
    return this.value;
}

Card.prototype.getSuit = function() {
    return this.suit;
}

Deck class

function Deck() {
    this.cards = new Array();
    var values = new Array("A","2","3","4","5","6","7","8","9","10","J","Q","K");
    var suits = new Array("Spade","Club","Jack","Diamond");
    for(var i = 0; i < 13; i++) {
        for(var j = 0; j < 4; j++) {
            this.cards.push(new Card(values[i], suits[j]));
        }
    }
}

function shuffle() {
    var temp = new Array();
    while(this.cards.length > 0) {
        var index = Math.floor(Math.random() * this.cards.length);
        temp.push(this.cards.splice(index,1));
    }
    this.cards = temp;
}

function takeCard() {
    var temp = this.cards[0];
    this.cards.splice(0,1);
    return temp;
}