I made an app that can help you learn Regex syntax

I tried showing my students how to use Regex and explained how I use it quite often to edit large amounts of repetitive texts, and the look of confusion that over time, switched to fascination in a few kids was just so satisfying.

I love sharing resources such as these with them.

Thank you for sharing.

https://regexr.com/ exists, and you don't have to make an account to use it.