Squarespace to Klaviyo - View Product & Add to Cart events (with variants)

SquareSpaceProductToKlaviyoEvents.js

// I'M USING THE 'BRINE' THEME & GBP CURRENCY

// REMEMBER TO PLACE THE FOLLOWING IN THE HEADER (https://x.squarespace.com/config/settings/advanced/code-injection)
/////////////////////////////////////////////////////////////////////////////////////
<script type="application/javascript" async src="https://static.klaviyo.com/onsite/js/klaviyo.js?company_id=PUBLIC_API_KEY_HERE"></script>
<script>var _learnq = _learnq || [];</script>


// FOLLOWING PART IS PLACED IN A <CODE> BLOCK IN THE ADDITIONAL-INFO SECTION ON PRODUCT EDIT PAGE
///////////////////////////////////////////////////////////////////////////////////////
<script>
 var item = {
    "ProductName": "Adult Moddey Dhoo T-Shirt",
    "ProductID": "mn-tee-dhoo",
    "Categories": ["tshirt",],
    "URL": "https://www.manxnostalgia.com/shop/tshirt/adult-moddey-dhoo-tshirt",
    "Brand": "Moddey Dhoo"
 };
 
 // Track view product
 _learnq.push(["track", "Viewed Product", item]);
 
 // Get variants used on product page, add to above item object, send as 'Add to Cart' event
 function klaviyoATC() {
    let variants = document.getElementsByClassName("variant-select-wrapper");
    let variantsInc = 0;
    
    Array.prototype.forEach.call(variants, function(variant, index) {
      let elem = variants.item(index);
      let variantType = elem.getElementsByTagName('select')[0].getAttribute('data-variant-option-name');
     
      if (!elem.getAttribute('data-text').includes("Select ")) {
        item[variantType] = elem.getAttribute('data-text');
        variantsInc++;
      }
    });

    if (variantsInc === variants.length) {
      item.Price = document.querySelector(".product-price").textContent.replace("£", "");
      item.Quantity = document.querySelector(".product-quantity-input").getElementsByTagName('input')[0].getAttribute('value');
      _learnq.push(['track', 'Added to Cart', item]);
    }
  }
  
  document.querySelector(".ProductItem-details .sqs-add-to-cart-button").addEventListener('click', event => klaviyoATC());
</script>