Regular Expressions 101

^start of line

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d{0,2})?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

Non-Capturing Group(?:,\s*\d+(?:\.\d{0,2})?)*

*repeats the group contents below 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

Non-Capturing Group(?:\.\d{0,2})?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

,?optionally matches the literal , (44₁₀ / 54₈ / 2C₁₆)

$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

^\d+(?:\.\d{0,2})?(?:,\s*\d+(?:\.\d{0,2})?)*,?$

New

1.23
1
1,
1.2,4
1.23, 4
1.23, 4,
1, 2.34
1.
1,,
1.234