Regex & Text Processing

Regex only makes sense when you can see what each part is doing. These guides break real examples down step by step so you can fix a pattern instead of guessing.

How to Match Spaces and Whitespace in Regex

Published on September 28, 2026 by Hasnain

Learn how to match spaces and whitespace in regex. Compare \s vs a literal space, use [ \t], allow spaces, trim, and collapse runs with examples.

Regex & Text Processing

$How to Match Newlines and Line Breaks in Regex (\n, \r, \r\n Explained)$

How to Match Newlines and Line Breaks in Regex (\n, \r, \r\n Explained)

Published on September 13, 2026 by Hasnain

Learn how to match newlines in regex with \n, \r, \r\n, the s (dotAll) and m (multiline) flags, and why JavaScript's $ matches before a final newline even without m. Test live.