Regular Expressions 101

Explanation
Pro

Character Class[-+]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

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

1st Alternative\d{1,3}(?:,\d{3})+

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

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

+repeats the group contents below at least once:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

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

2nd Alternative\d+

\d+a Unicode decimal digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a Unicode decimal digit, repeated at least once

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.

25 tokens

[-+]?(?:\d{1,3}(?:,\d{3})+|\d+)(?:\.\d+)?

New

Text 1,921.15 Text 
Text 921.15 Text 
Text 921 Text 
Text 1,921 Text 
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