Regex Tester | LocalForge

Examples

Quick Reference

Character Classes

.Any character except newline

\dDigit (0-9)

\DNon-digit

\wWord character (a-z, A-Z, 0-9, _)

\WNon-word character

\sWhitespace

\SNon-whitespace

[abc]Any of a, b, or c

[^abc]Not a, b, or c

[a-z]Character range

Anchors

^Start of string/line

$End of string/line

\bWord boundary

\BNon-word boundary

Quantifiers

*0 or more

+1 or more

?0 or 1

{n}Exactly n times

{n,}n or more times

{n,m}Between n and m times

*?0 or more (lazy)

+?1 or more (lazy)

Groups

(abc)Capturing group

(?:abc)Non-capturing group

(?<name>abc)Named group

\1Backreference to group 1

a|bAlternation (a or b)

Lookahead/Lookbehind

(?=abc)Positive lookahead

(?!abc)Negative lookahead

(?<=abc)Positive lookbehind

(?<!abc)Negative lookbehind