Working with regular expressions I’m also going to cover how to work with regular expressions in JavaScript, though the concepts learned here apply to other languages as well.

I first heard about regular expression denial of service (ReDoS) vulnerabilities from GitHub's Dependabot. Several of my projects over the years have had dependencies that suffered from ReDoS ...

Summary A regular expression consists of a pattern and optional flags: pattern:g, pattern:i, pattern:m, pattern:u, pattern:s, pattern:y. Without flags and special symbols (that we'll study later), the ...

Regular expressions may have flags that affect the search. There are only 6 of them in JavaScript: pattern:i : With this flag the search is case-insensitive: no difference between A and a (see the ...