Regex cookbook — Top 15 Most common regex

The most commonly used (and most wanted) regexes

UPDATE 01/2024: See further explanations/answers in story responses!

After some time I thought about publishing this article (see my previous tutorial) with the regex I used most in the projects on which I was involved.

Write in the comments any regex that you would like to add and I will try (if I can) to implement them 😅

Happy coding!!!

1. Regex (Base)

1.1 Alpha-numeric, literals, digits, lowercase, uppercase chars only

\w                //alpha-numeric only
[a-zA-Z]          //literals only
\d                //digits only
[a-z]             //lowercase literal only
[A-Z]             //uppercase literal only

1.2 Simple numbers — try it!

Matches simple numbers only (no decimal nor fractions)

^(\d+)$.          15/12  8.5  12

1.3 Decimal numbers — try it!

^(\d*)[.,](\d+)$   15/12  8.5  12  8,7

1.4 Fractions — try it!

^(\d+)[\/](\d+)$   15/12  8.5  12