desperate_one,
далее сами
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<style type="text/css">
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(document).ready(function() {
$('.pos').on('click', '.order-form-go', function(event){
event.preventDefault();
var block = event.delegateTarget;
var title = $('.cart-name', block).text();
var data = $('.diameter-size:eq(1)', block).data();// $('.diameter-size.active', block).data;
var diam = data.diam;
var daugh = $('[name="daugh"]', block).val();
var price = data['price'+daugh];
var amount = $('[name="amount"]', block).val();
alert([title, diam, daugh, amount, price]); // название, размер, тесто, кол-во и цену.
})
})
</script>
</head>
<body>
<div class="pos left" itemscope="" itemtype="http://schema.org/Product" data-subcat="" data-id="3" data-price="470" style="margin-left: 37px;">
<div class="posImg">
<div class="posImg_hover"> </div>
<img itemprop="image" src="http://hub.loc/images/catalog/pizza_3247.png" data-big="http://hub.loc/images/catalog/pizza_3247.png" class="cboxElement">
</div>
<div class="posName myRed posBottom">
<table>
<tbody><tr>
<td valign="middle" itemprope="name">
<a class="myRed cart-name">Мега пепперони</a>
</td>
</tr>
</tbody></table>
</div>
<div class="ingrids posBottom" itemprop="description">
<span>КОЛБАСА ПЕППЕРОНИ, СЫР МОЦАРЕЛЛА, ФИРМЕННЫЙ СОУС</span>
</div>
<div class="infovalues posBottom">
<span class="weight left">вес: <b>510</b> гр.</span>
</div>
<div class="attribute posBottom">
<label class="selDiam">Выбор диаметра: </label>
<div class="form-radios">
<div class="form-item ">
<label class="option ">
<span class="diameter-size" data-weight2="480" data-weight1="360" data-price2="360" data-price1="360" data-diam="S">S</span>
<br>
<span class="diameter-price">360 руб</span>
</label>
</div>
<div class="form-item ">
<label class="option ">
<span class="diameter-size" data-weight2="640" data-weight1="510" data-price2="470" data-price1="470" data-diam="M">M</span>
<br>
<span class="diameter-price">470 руб</span>
</label>
</div>
<div class="form-item ">
<label class="option ">
<span class="diameter-size" data-weight2="1010" data-weight1="710" data-price2="670" data-price1="670" data-diam="L">L</span>
<br>
<span class="diameter-price">670 руб</span>
</label>
</div>
</div>
</div>
<div class="selects">
<div class="form-item">
<label class="l">количество:</label>
<select class="l" name="amount">
<option class="colvo-sel" value="1">1 шт.</option>
<option class="colvo-sel" value="2">2 шт.</option>
<option class="colvo-sel" value="3">3 шт.</option>
<option class="colvo-sel" value="4">4 шт.</option>
<option class="colvo-sel" value="5">5 шт.</option>
<option class="colvo-sel" value="6">6 шт.</option>
<option class="colvo-sel" value="7">7 шт.</option>
<option class="colvo-sel" value="8">8 шт.</option>
<option class="colvo-sel" value="9">9 шт.</option>
<option class="colvo-sel" value="10">10 шт.</option>
</select>
</div>
<div class="form-item">
<label class="">тесто: </label>
<select name="daugh" class="form-select">
<option value="2">пышное</option>
<option value="1">тонкое</option>
</select>
</div>
</div>
<div class="btnTocart" style="padding-top: 0.557982px;">
<center>
<div class="tocart" data-id="1100" itemprop="offers" itemscope="" itemtype="http://schema.org/Offer" style="user-select: none;">
<div class="leftBtn btn left"> </div>
<div class="centerBtn btn left redshdw pizz-cena">
<b>470</b> руб.
</div>
<div class="order-form-go seccenterBtn btn left yelshdw">
<b>ЗАКАЗАТЬ</b>
</div>
<div class="rightBtnYel btn left"> </div>
<meta itemprop="price" content="470">
<meta itemprop="priceCurrency" content="RUB">
<link itemprop="availability" href="http://schema.org/InStock">
</div>
</center>
</div>
</div>
</body>
</html>