I'm quite a beginner in Javascript and trying to make a blackjack game.

Arrays and objects:

```
card = {}, //every card is an object having 3 properties: suit, number and points
playerCards = [], //an array containing player cards (objects)
dealerCards = [], //an array containing dealer cards (objects)

```

I also created manually some cards for testing purposes, like this:

```
card = {
    suit : "spade",
    number : "queen",
    points : 10
};
playerCards.push(card);

```

Then i have functions to randomly create new cards and check if it's already in use:

```
function makeCard() {
    "use strict";
    var uK;
    for (;;) {
        createCard(card, suit, number, points); // creates a new card, code below
        checkCard(card, playerCards, dealerCards, uC); // checkes if card is already in use and returns uC = 1 if "yes" and uC = 0 if "not" (working)
        if (uK === 0) {
            break;
        }
    }
    return card;
}

```

Here's the code of createCard():

```
function createCard(card, suit, number, points) {
    "use strict";
    var i = Math.floor(Math.random() * 4);
    card.suit = suit[i];
    i = Math.floor(Math.random() * 13);
    card.number = number[i];
    card.points = points[i];
    return card;
}

```

It works, but when it creates a new card it replaces the last one manually added in playerCards/dealerCards array. I can prevent it with creating a pointless sample card and not adding it to array (then this one will be replaced), but it doesn't seem right. So what should i do?

Thanks in advance!