Regular Expressions 101

Pro

Non-Capturing Group(?:"([^"]*)"|'([^']*)'|(?:counter|attr|url)$([^)]*)$)

1st Alternative"([^"]*)"

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 1([^"]*)

Negated Character Class[^"]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative'([^']*)'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 2([^']*)

Negated Character Class[^']*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

3rd Alternative(?:counter|attr|url)$([^)]*)$

Non-Capturing Group(?:counter|attr|url)

1st Alternativecounter

counterthe literal text counter (case sensitive)

2nd Alternativeattr

attrthe literal text attr (case sensitive)

3rd Alternativeurl

urlthe literal text url (case sensitive)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 3([^)]*)

Negated Character Class[^)]*

*matches any number of characters outside the set below:

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)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

Detailed match information will be displayed here automatically.

26 tokens

Regular Expression

(?:"([^"]*)"|'([^']*)'|(?:counter|attr|url)\(([^)]*)\))

New

counter(item)" " attr(data) "" counter(item1,decimal) url('test.jpeg') "hi" attr(xyz)
counter(name, style) " " invalid(data) url('test.jpeg') open-quote

Extraction

counter(item)" " attr(data) "" counter(item1,decimal) url('test.jpeg') "hi" attr(xyz)
counter(name, style) " " invalid(data) url('test.jpeg') open-quote