"Custom WooCommerce AJAX script implemented via Code Snippets (v3.6.8) that enhances product page add-to-cart functionality and cart updates without page reloads. Compatible with WooCommerce 9.8.1. Features include: 1) AJAX add-to-cart on product pages 2) AJAX cart quantity updates 3) Dynamic cart fragment refresh 4) Proper cache control for cart pages. Works with single product and product bundles"