Regular Expressions 101

Pro

^start of line

\s*any whitespace character, repeated any number of times

\d+a digit, repeated at least once

Non-Capturing Group(?:\s*,\s*\d+)*

*repeats the group contents below any number of times:

\s*any whitespace character, repeated any number of times

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*any whitespace character, repeated any number of times

\d+a digit, repeated at least once

\s*any whitespace character, repeated any number of times

$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

^\s*\d+(?:\s*,\s*\d+)*\s*$

New

1 , 8,9,  88
  8 , 44, 3  , 11
1,2,3,4
1 , 2,3,9
  8 , 44, 3  , 11    
1     
1,2
 1,2 
1  ,2    
1   2, 5
1, 2,
, 1,2,
1,2 3,4