Regular Expressions 101

Explanation

Pro

<figurethe literal text <figure (case sensitive)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 1([\t\n\r\s]*)

Character Class[\t\n\r\s]*

*matches any number of characters from the set below:

\ta tab character (ASCII 9)

\na line-feed (newline) character (ASCII 10)

\ra carriage return (ASCII 13)

\sany whitespace character

<figcaptionthe literal text <figcaption (case sensitive)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 2(.*)

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

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

figcaption>the literal text figcaption> (case sensitive)

Group 3([\t\n\r\s]*)

Character Class[\t\n\r\s]*

*matches any number of characters from the set below:

\ta tab character (ASCII 9)

\na line-feed (newline) character (ASCII 10)

\ra carriage return (ASCII 13)

\sany whitespace character

<audiothe literal text <audio (case sensitive)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 4(([\t\n\r\s]|.)*)

Group 5([\t\n\r\s]|.)*

*repeats the group contents below any number of times:

1st Alternative[\t\n\r\s]

Character Class[\t\n\r\s]

\ta tab character (ASCII 9)

\na line-feed (newline) character (ASCII 10)

\ra carriage return (ASCII 13)

\sany whitespace character

2nd Alternative.

.any character (except for line terminators)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

audio>the literal text audio> (case sensitive)

Group 6([\t\n\r\s]*)

Character Class[\t\n\r\s]*

*matches any number of characters from the set below:

\ta tab character (ASCII 9)

\na line-feed (newline) character (ASCII 10)

\ra carriage return (ASCII 13)

\sany whitespace character

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

figure>the literal text figure> (case sensitive)

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

g modifier: global. Finds all matches instead of stopping after the first

Unit Test Summary

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Quick Reference

25 tokens

Regular Expression

<figure[^>]*>([\t\n\r\s]*)<figcaption[^>]*>(.*)<\/figcaption>([\t\n\r\s]*)<audio[^>]*>(([\t\n\r\s]|.)*)<\/audio>([\t\n\r\s]*)<\/figure>

Unit Tests

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