How Sticky Add to Cart and
The Sticky Add to Cart Bar: Scroll-Triggered DOM Manipulation The sticky add-to-cart bar doesn't rely on a new database table or custom post type. Instead, it hooks into wp_footer to inject a float...
Source: DEV Community
The Sticky Add to Cart Bar: Scroll-Triggered DOM Manipulation The sticky add-to-cart bar doesn't rely on a new database table or custom post type. Instead, it hooks into wp_footer to inject a floating <div> that listens to the scroll event via JavaScript. When the native "Add to Cart" button (typically .single_add_to_cart_button) scrolls out of the viewport, the plugin calculates its offset using getBoundingClientRect() and clones its state, price, variations, stock, into the sticky bar. For variable products, it intercepts the found_variation event to ensure the floating bar reflects the selected attributes before submission. The plugin avoids layout shifts by reserving space in the DOM with position: fixed and bottom: 0, while CSS transitions handle the slide-in/out animation. All logic runs client-side, so there's no server-side overhead beyond the initial asset load. The settings panel, built with the WordPress Customizer API, lets you toggle visibility per device type (mobil
