Worden testdata naar een server geüpload?

Nee. Alle verwerking vindt lokaal plaats in uw browser.

Wat is het verschil tussen JavaScript en PCRE2?

JavaScript gebruikt de native RegExp van de browser. PCRE2 ondersteunt lookbehind, atomaire groepen, recursie en bezittelijke kwantificatoren.

JavaScript: g, i, m, s, u. PCRE2 extra: x, A, D.

De bibliotheek biedt 30+ sjablonen met één klik. De meeste zijn vereenvoudigd.

Ja. JavaScript: $1, $2. PCRE2: \\1, \\2 of ${1}, ${2}.

Automatische terugval naar JavaScript. Controleer uw netwerkverbinding.

Regex-patroon

JSPCRE

Teststring

Geen overeenkomst

Syntaxis	Betekenis	JS	PCRE	Python	Java
\d	Digit [0-9]	✅	✅	✅	✅
\D	Non-digit [^0-9]	✅	✅	✅	✅
\w	Word character [a-zA-Z0-9_]	✅	✅	✅	✅
\W	Non-word character	✅	✅	✅	✅
\s	Whitespace	✅	✅	✅	✅
\S	Non-whitespace	✅	✅	✅	✅
.	Any character (except newline)	✅	✅	✅	✅
[abc]	Character class (match a/b/c)	✅	✅	✅	✅
[^abc]	Negated class (not a/b/c)	✅	✅	✅	✅
[[:alpha:]]	POSIX alpha class	❌	✅	✅	❌
[[:digit:]]	POSIX digit class	❌	✅	✅	❌
\p{L}	Unicode letter	✅	✅	⚠️	✅
\p{N}	Unicode number	✅	✅	⚠️	✅
\X	Unicode extended grapheme cluster	❌	✅	❌	❌

Syntaxis	Betekenis	JS	PCRE	Python	Java
*	Zero or more	✅	✅	✅	✅
+	One or more	✅	✅	✅	✅
?	Zero or one	✅	✅	✅	✅
{n}	Exactly n times	✅	✅	✅	✅
{n,m}	Between n and m times	✅	✅	✅	✅
*?	Zero or more (lazy)	✅	✅	✅	✅
+?	One or more (lazy)	✅	✅	✅	✅
??	Zero or one (lazy)	✅	✅	✅	✅
{n,m}?	Between n and m (lazy)	✅	✅	✅	✅
*+	Zero or more (possessive)	❌	✅	❌	✅
++	One or more (possessive)	❌	✅	❌	✅
?+	Zero or one (possessive)	❌	✅	❌	✅

Syntaxis	Betekenis	JS	PCRE	Python	Java
^	Start of string (line start in multiline)	✅	✅	✅	✅
$	End of string (line end in multiline)	✅	✅	✅	✅
\b	Word boundary	✅	✅	✅	✅
\B	Non-word boundary	✅	✅	✅	✅
\A	Absolute start of string	❌	✅	✅	✅
\Z	Absolute end (before newline)	❌	✅	✅	✅
\z	Very end (after newline)	❌	✅	✅	❌
\G	End of previous match	❌	✅	✅	✅

Syntaxis	Betekenis	JS	PCRE	Python	Java
(...)	Capturing group	✅	✅	✅	✅
(?:...)	Non-capturing group	✅	✅	✅	✅
(?<name>...)	Named group (JS/Java style)	✅	⚠️	✅	✅
(?P<name>...)	Named group (Python style)	❌	✅	✅	❌
\1	Backreference to group N	✅	✅	✅	✅
$1	Replacement ref to group N	✅	❌	❌	✅
\k<name>	Named backreference	✅	✅	✅	✅
(?\|...)	Branch reset group	❌	✅	❌	❌
(?>...)	Atomic group (no backtracking)	❌	✅	❌	✅

Syntaxis	Betekenis	JS	PCRE	Python	Java
(?=...)	Positive lookahead	✅	✅	✅	✅
(?!...)	Negative lookahead	✅	✅	✅	✅
(?<=...)	Positive lookbehind	✅	✅	✅	✅
(?<!...)	Negative lookbehind	✅	✅	✅	✅

Syntaxis	Betekenis	JS	PCRE	Python	Java
(?i)	Case insensitive	✅	✅	✅	✅
(?-i)	Case sensitive	❌	✅	❌	⚠️
(?m)	Multiline (^/$ match line starts/ends)	✅	✅	✅	✅
(?s)	Dotall (. matches newline)	✅	✅	⚠️	✅
(?x)	Extended (ignore whitespace & # comments)	❌	✅	✅	✅
(?i:...)	Inline case insensitive	✅	✅	❌	✅

Syntaxis	Betekenis	JS	PCRE	Python	Java
\K	Reset match start	❌	✅	❌	❌
(*SKIP)	Skip current match	❌	✅	❌	❌
(*FAIL)	Force match failure	❌	✅	❌	❌
(?(cond)yes\|no)	Conditional expression	❌	✅	❌	❌
(?R)	Recurse entire pattern	❌	✅	❌	❌
(?1)	Subroutine call to group 1	❌	✅	❌	❌