Regex Tester

Test text

Regex token quick reference

.: Any character (except newline)
\d: Digit (\D non-digit)
\w: Word character (\W non-word)
\s: Whitespace (\S non-space)
\b: Word boundary
^ $: Start / end of string (or line with m)
* + ?: Zero or more / one or more / optional
{n,m}: Exactly n to m repetitions
[…]: Character class, e.g. [a-z0-9]
(…): Capturing group
(?:…): Non-capturing group
(?<name>…): Named capturing group
(?=…) (?!…): Lookahead (positive / negative)
(?<=…) (?<!…): Lookbehind (positive / negative)
a|b: Alternation (a or b)
\1 … \9: Backreference to capture group
\p{L}: Unicode property (requires u flag)
\x{…}: Unicode code point (requires u flag)

Uses JavaScript regular expressions.