Regular Expressions 101

^start of line

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

\d{0,2}a digit, repeated between 0 and 2 times

Non-Capturing Group(?:\,\d{1,3})?

?repeats the group contents below at most once:

\,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d{1,3}a digit, repeated between 1 and 3 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.

Search reference

Regular Expression

^[1-9]\d{0,2}(?:\,\d{1,3})?$