-
RegExr
RegExr is a HTML/JS based tool for creating, testing, and learning about Regular Expressions.
-
SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
-
scripting_course
:notebook: Books, reference guides and resources on Regular Expressions, CLI one-liners, Scripting Languages and Vim.
Also, another similar tool https://regexr.com/
https://github.com/aloisdg/awesome-regex has a good collection of resources, ranging from learning material to libraries and alternate methods.
I have separate books for Python/Ruby/JS regexp. My books on grep/sed/awk include detailed chapters on regexp. You can read them for free online, see https://github.com/learnbyexample/scripting_course#ebooks for links. I use lots of examples to present a concept and there are plenty of exercises to test your knowledge as well.