The Codecademy Final Blackjack game

script.js

// Card Constructor
var Card = function(suit, num){
    getNumber =  function(num){ 
        return num;
    },
    getSuit = function(suit){
       return suit; 
    },
    getValue = function(num){
        var value;
        if (num > 10){
            var value = 10;
        } else if (num === 1){
            var value = 11;
        } else {
            var value = num;
        }
        return value;
    };
};
var deal = function(){
    ranSuit = Math.floor(Math.random * 4);
    ranNum = Math.floor(Math.random * 13);
    var ranCard = new Card(ranSuit, ranNum);
};

function Hand(){
	var card1 = deal();
	var card2 = deal();
	var arrayHand = [];
	arrayHand.push(card1);
	arrayHand.push(card2);
	this.getHand = function(){
		return arrayHand;
	};
	this.score = function(){
		var sum = 0;
		var acesProb = 0;
		for(var i = 0; i < arrayHand.length; i++){
			sum = sum + arrayHand[i].getValue();
		}
		if(sum > 21) {
			if(arrayHand[i].getValue === 11) {
				sum = sum - 10;
			} else {
				return sum;
			}
		} else {
			return sum;
		}
	};
	this.printHand = function(){
		var string = 0;
		for(var j = 0; j < arrayHand.length; j++){
			string = string + Card.getNumber() + "of suit" + Card.getSuit();
		}
		return string;
	};
	this.hitMe = function(){
		var card3 = deal();
		arrayHand.push(card3);
	};
}

var playAsDealer = function(){
    var dealerHand = new Hand();
    while( dealerHand.score()<17 ){
        dealerHand.hitMe();
    }
    return dealerHand;
};

var playAsUser = function() {
    var userHand = new Hand();
    var decision = confirm("Your hand is "+ hand.printHand() + ": Hit OK to hit     (take another card) or Cancel to stand");
    
    while(decision) {
        
        userHand.hitMe();
        
    }
};

var declareWinner = function(userHand, dealerHand) {
    if (userHand.score() > 21) {
        if (dealerHand.score() > 21) {
            return 'You tied!';
        } else {
            return 'You win!';
        }
    } else {
        return 'You lose!';
    }
};

var playGame = function() {
    userHand = playAsUser(); 
    dealerHand = playAsDealer();
    var result = declareWinner(userHand, dealerHand);
    console.log(result);

}

playGame();