Untitled

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Shop Cart based on objects</title>
</head>
<body>
    <script>

        /**
         *  Products:
         *  |----+--------+-------+-------+--------|
         *  | id | name   | price | type  | weight |
         *  |----+--------+-------+-------+--------|
         *  |  1 | Soap   |  3.39 | other |     40 |
         *  |  2 | Cheese |  2.59 | food  |    100 |
         *  |  3 | Bread  |  6.00 | food  |    500 |
         *  |  4 | Cola   |  5.80 | drink |   1500 |
         *  |  5 | Water  |  1.99 | drink |   1000 |
         *  |----+--------+-------+-------+--------|
         *
         *  1. Please prepare product objects based on provided data
         *  2. Please create Shopping Cart object
         *  3. Please add to your shopping cart:
         *     - 3 soaps
         *     - 3 waters
         *     - 2 cheeses
         *     - 2 colas
         *     - 1 bread
         *  4. You have only 35 PLN, can you buy all above things?
         *
         *  EXTRA:
         *  5. If not, please remove something
         *  6. Please implement method buy(amount) to your shopping cart.
         *     This method should return array of Paper Bags with products inside.
         *     One paper bag can contain 2500g of products.
         *  7. How many paper bags do you need?
         */

        // Let's code!
        var balance = 35;


        function Product(name, price, type, weight) {
            this.name = name;
            this.price = price;
            this.type = type;
            this.weight = weight;
        }

        var soap = new Product("Soap", 3.39, "other", 40);
        var cheese = new Product("Cheese", 2.59, "food", 100);
        var bread = new Product("Bread", 6.00, "food", 500);
        var cola = new Product("Cola", 5.80, "drink", 1500);
        var water = new Product("Water", 1.99, "drink", 1000);

        var shoppingCart = {
            items: [],
            addToCart: function (item) {
                if (item.price <= balance) {
                    balance -= item.price;
                    this.items.push(item);
                }
            },
            removeFromCart: function(item) {
                if (this.items.indexOf(item) > -1) {
                    balance += item.price;
                    this.items.splice(this.items.indexOf(item), 1);
                }
            }
        }