Regular Expressions 101

^start of line

.*?any character (except for line terminators), repeated any number of times

Negative Lookbehind(?<!\d)

\da digit

Negative Lookbehind(?<!\d,)

\da digit

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 1(\d{1,3}(?:,\d{3})*)

\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

Negative Lookahead(?!,?\d)

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

\da digit

.*any character (except for line terminators), repeated any number of times

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,)(\d{1,3}(?:,\d{3})*)(?!,?\d).*

New

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theGlobe
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OpenDiary
Open
Diary
17,738
JUNE
1998
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Bolt
bolt3,270,300
Classmates
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