Conclusion Regular expressions are a powerful tool for working with text data in JavaScript. By using regular expressions, you can search, manipulate, and extract specific parts of a string with ...

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 ...

Flags 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 ...

Regular expressions are patterns that provide a powerful way to search and replace in text. In JavaScript, they are available via the RegExp object, as well as being integrated in methods of strings.

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.

JavaScript’s RegExp object, which holds a regular expression, is what we need here. Regular expressions are a big subject, and there are plenty of FAQs on them on the Web.