Regular Expressions 101

1st Alternative(?![^<]*>)(\s<[^/]*?>|\s|^)([\wåäö])(?=.*\2(.)\S*$)

Negative Lookahead(?![^<]*>)

Negated Character Class[^<]*

*matches any number of characters outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 1(\s<[^/]*?>|\s|^)

1st Alternative\s<[^/]*?>

\sany whitespace character

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Negated Character Class[^/]*?

*?matches any number of characters outside the set below:

/the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative\s

\sany whitespace character

3rd Alternative^

^start of string

Group 2([\wåäö])

Character Class[\wåäö]

\wany word character

åthe literal å (229₁₀ / 345₈ / E5₁₆) (case sensitive)

äthe literal ä (228₁₀ / 344₈ / E4₁₆) (case sensitive)

öthe literal ö (246₁₀ / 366₈ / F6₁₆) (case sensitive)

Positive Lookahead(?=.*\2(.)\S*$)

.*any character (except for line terminators), repeated any number of times

\2the text saved by group 2

Group 3(.)

.any character (except for line terminators)

\S*any non-whitespace character, repeated any number of times

$end of string

2nd Alternative[\wåÅäÄöÖ]+$

Character Class[\wåÅäÄöÖ]+

+matches at least one character from the set below:

\wany word character

åthe literal å (229₁₀ / 345₈ / E5₁₆) (case sensitive)

Åthe literal Å (197₁₀ / 305₈ / C5₁₆) (case sensitive)

äthe literal ä (228₁₀ / 344₈ / E4₁₆) (case sensitive)

Äthe literal Ä (196₁₀ / 304₈ / C4₁₆) (case sensitive)

öthe literal ö (246₁₀ / 366₈ / F6₁₆) (case sensitive)

Öthe literal Ö (214₁₀ / 326₈ / D6₁₆) (case sensitive)

$end of string

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?![^<]*>)(\s<[^/]*?>|\s|^)([\wåäö])(?=.*\2(.)\S*$)|[\wåÅäÄöÖ]+$

New

test <b when="2>1">ap<i>p</i></b>le store östersund aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZåÅäÄöÖ

Regular Expression

Extraction