Odstranovanie položiek z košíka

<div id="message"></div>
<table id="cart">
    <tr>
        <th>ID produktu</th>
        <th>Cena</th>
        <th>Množstvo</th>
        <th>Názov produktu</th>
        <th></th>
    </tr>
    <?php foreach ($cartdata as $data) : ?>
    <tr id="idecko<?=$data['id'];?>">
        <td><?=$data['idproduct'];?></td>
        <td><span id="price"><?=$data['price'];?></span><span id="mena"> €</span></td>
        <td><span id="quantity"><?=$data['quantity'];?></span></td>
        <td><?=$data['product_name'];?></td>
        <td><form method="post"><button id="delete-product" onclick="deleteproduct(this.getAttribute('value')); return false;" name="delete-product" value="<?=$data['id'];?>" type="submit">Odstranit</button></form></td>
    </tr>
    <?php endforeach ?>
</table>
<p>Celková cena <span id="cart-price"><?=$price;?></span> €</p>

function deleteproduct(data) {

    console.log(data);

    var tablerow = $('#idecko'+data); // Zvolena polozka
    var quantity = $('#idecko'+data+' td #quantity').text(); // Mnozstvo produktu
    var price = $('#idecko'+data+' td #price').text(); // Cena produktu
    var fullprice = quantity * price; // Celkova cena produktu
    var deletebutton = $('#cart').find('tr td #delete-product'); // Odstranovacie tlacitko
    var message = $('#message'); // Sprava
    var cartinfo = $('#cart-info').text(); // Mnozstvo poloziek v kosiku
    var vysledok = cartinfo - 1; // Mnozstvo poloziek v kosiku - 1
    var cartprice = $('#cart-price').text(); // celkova cena vsetkych poloziek
    var changeprice = cartprice - fullprice; // Zmena ceny

    $.ajax({
        type: 'post',
        url: '',
        data: 'id='+data,
        success: function(data)
        {
            if (message.is(':hidden'))
            {
                $('#cart-price').text(changeprice);
                $('#cart-info').text(vysledok);
                deletebutton.prop('disabled', true);
                tablerow.hide();
                message.slideDown(500).text('Položka bola odstránená');

                setTimeout(function() {
                    message.slideUp(500);
                }, 2000);
                setTimeout(function() {
                    deletebutton.prop('disabled', false);
                }, 2500);
            }
        }
    });
}