This page ups the ante a bit by giving you some sample code that triggers an Ajax request.
The page also uses a simple Bootstrap grid layout, to demonstrate that feature. Visit https://getbootstrap.com/docs/4.0/layout/grid/ to learn more.
All examples below are hardcoded for the gene PBS2…purposely chosen because it wasn’t anyone’s favorite.
While getting to know this code, you might want to have the web browser’s Developer Tools open so you can watch network activity and inspect elements.