Regular Expressions 101

Pro

Group 1([^\s@]{2})

Negated Character Class[^\s@]{2}

{2}matches exactly 2 characters outside the set below:

\sany whitespace character

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Group 2([^\s@]{1,2})

Negated Character Class[^\s@]{1,2}

{1,2}matches between 1 and 2 characters outside the set below:

\sany whitespace character

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Positive Lookahead(?=[^\s@]*@)

Negated Character Class[^\s@]*

*matches any number of characters outside the set below:

\sany whitespace character

@the literal @ (64₁₀ / 100₈ / 40₁₆)

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

([^\s@]{2})([^\s@]{1,2})(?=[^\s@]*@)

New

examplemail@domain.com

examplemail@domain.com