Regular Expressions 101

^start of line

Negative Lookahead(?![0,.]+$)

Character Class[0,.]+

+matches at least one character from the set below:

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

$end of line

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

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

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\d{3}a digit, repeated exactly 3 times

Group 1(\.\d{1,2})?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d{1,2}a digit, repeated between 1 and 2 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

Regular Expression

^(?![0,.]+$)\d{1,3}(?:,\d{3})*(\.\d{1,2})?$

New

000
00
0
0.00
0,000,000.44
123
123.5
123.56
1,123
1,123.45
1,123,456
1,123,456.55

000
00
0
0.00
0,000,000.44
123
123.5
123.56
1,123
1,123.45
1,123,456
1,123,456.55