Regular Expressions 101

Pro

^start of string

Positive Lookahead(?=[^\s-]*([\s-][^\s-]*){0,2}$)

Negated Character Class[^\s-]*

*matches any number of characters outside the set below:

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 1([\s-][^\s-]*){0,2}

{0,2}repeats the group contents below between 0 and 2 times:

Character Class[\s-]

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Negated Character Class[^\s-]*

*matches any number of characters outside the set below:

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

$end of string

Character Class[a-zA-Z\u00c4\u00e4\u00d6\u00f6\u00dc\u00fc\u00df\s-]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

\u00c4the literal Ä (C4₁₆ / 304₈ / 196₁₀) (case sensitive)

\u00e4the literal ä (E4₁₆ / 344₈ / 228₁₀) (case sensitive)

\u00d6the literal Ö (D6₁₆ / 326₈ / 214₁₀) (case sensitive)

\u00f6the literal ö (F6₁₆ / 366₈ / 246₁₀) (case sensitive)

\u00dcthe literal Ü (DC₁₆ / 334₈ / 220₁₀) (case sensitive)

\u00fcthe literal ü (FC₁₆ / 374₈ / 252₁₀) (case sensitive)

\u00dfthe literal ß (DF₁₆ / 337₈ / 223₁₀) (case sensitive)

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

$end of string

Detailed match information will be displayed here automatically.

26 tokens

^(?=[^\s-]*([\s-][^\s-]*){0,2}$)[a-zA-Z\u00c4\u00e4\u00d6\u00f6\u00dc\u00fc\u00df\s-]+$

New