Upcart APIの一般的な使用例

<script>
  window.upcartSubscribeCartLoaded(function(event) {
    var stickyBtn = document.querySelector("#upCartStickyButton");
    if (stickyBtn) {
      var totalQty = event.cart.items.reduce(function(sum, item) {
        return sum + item.quantity;
      }, 0);
      stickyBtn.style.display = totalQty === 0 ? "none" : "block";
    }
  });
</script>

<script>
  window.upcartSubscribeAddedToCart(function(event) {
    console.log("Added to cart:", event.item.title, "| Qty:", event.item.quantityAdded);
  });
</script>

<script>
  window.upcartSubscribeAddedToCart(function(event) {
    window.TriplePixel('AddToCart', {
      item: event.item.variantId,
      q: event.item.quantityAdded
    });
  });
</script>

<script>
  window.upcartSubscribeAddedToCart(function(event) {
    window.upcartOpenCart();
  });
</script>