regex101: JavaScript Match Workspace

^start of line

Non-Capturing Group(?:(?=.*\b5[15]00\b)[0-9]{2,}\\[0-9]{2}-[0-9]{4}-[0-9]{3}-|(?!.*\b5[15]00\b)[0-9]{2,}\\[0-9]{2}-[0-9]{4}-[0-9]{3}-[0-9]{2})

1st Alternative(?=.*\b5[15]00\b)[0-9]{2,}\\[0-9]{2}-[0-9]{4}-[0-9]{3}-

Positive Lookahead(?=.*\b5[15]00\b)

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

\ban ASCII word boundary

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

Character Class[15]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

00the literal text 00

\ban ASCII word boundary

Character Class[0-9]{2,}

{2,}matches at least 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative(?!.*\b5[15]00\b)[0-9]{2,}\\[0-9]{2}-[0-9]{4}-[0-9]{3}-[0-9]{2}

Negative Lookahead(?!.*\b5[15]00\b)

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

\ban ASCII word boundary

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

Character Class[15]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

00the literal text 00

\ban ASCII word boundary

Character Class[0-9]{2,}

{2,}matches at least 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{4}

{4}matches exactly 4 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{3}

{3}matches exactly 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[0-9]{2}

{2}matches exactly 2 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$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

Search reference

Regular Expression

^(?:(?=.*\b5[15]00\b)[0-9]{2,}\\[0-9]{2}-[0-9]{4}-[0-9]{3}-|(?!.*\b5[15]00\b)[0-9]{2,}\\[0-9]{2}-[0-9]{4}-[0-9]{3}-[0-9]{2})$

New

01\01-5500-000-
01\01-5000-000-00

Regular Expressions 101

Regular Expression

Extraction