Regular Expressions 101

Pro

^start of line

Non-Capturing Group(?:[*%]*\d){2}

{2}repeats the group contents below exactly 2 times:

Character Class[*%]*

*matches any number of characters from the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

\da digit

Character Class[*%\d]*

*matches any number of characters from the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

\da digit

$end of line

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.

26 tokens

^(?:[*%]*\d){2}[*%\d]*$

12
%23
78%
12***3
*1*7

Invalid

8
*7
6%
AB
%4*

12
%23
78%
12***3
*1*7

Invalid

8
*7
6%
AB
%4*