Regular Expressions 101

<stylethe literal text <style (case sensitive)

Character Class[\s\S]*

*matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

Character Class[>}\/\n]

>the literal > (62₁₀ / 76₈ / 3E₁₆)

}the literal } (125₁₀ / 175₈ / 7D₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

Group 1(.*)

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

{the literal { (123₁₀ / 173₈ / 7B₁₆)

Character Class[\s\S]*?

*?matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

backgroundthe literal text background (case sensitive)

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

urlthe literal text url (case sensitive)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 2(.*?)

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

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

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Search reference

Regular Expression

<style[\s\S]*[>}\/\n](.*){[\s\S]*?background.*?url\((.*?)\)

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