Building an Infinite Scroll in Rails 8 (Zero Custom JavaScript) Every modern web application eventually needs a feed. Whether it's a list of articles, a timeline of comments, or a gallery of products, users expect an "Infinite Scroll" experience. They scroll to the bottom, and the next batch of items magically appears. In the past, implementing this was a nightmare for backend developers. You had to: Write JavaScript to listen to the window scroll event (and debounce it so it didn't crash the browser). Calculate if the user was 100 pixels away from the bottom of the screen. Fire an AJAX request. Parse a JSON response. Append new DOM elements to the page. It was messy and prone to bugs. If you are using Rails 8, you can throw all of that JavaScript away. By combining standard Rails pagination with a powerful feature of Hotwire called Lazy-Loaded Turbo Frames , we can build a perfect infinite scroll in about 5 minutes, writing absolutely zero custom JS. Here is exactly how to do it.…