Regular Expressions 101

Group 1(<a(?:\s+\w+\s*=\s*(?P<quote>["']).*?(?P=quote))*)

<athe literal text <a (case sensitive)

Non-Capturing Group(?:\s+\w+\s*=\s*(?P<quote>["']).*?(?P=quote))*

*repeats the group contents below any number of times:

\s+any whitespace character, repeated at least once

\w+any word character, repeated at least once

\s*any whitespace character, repeated any number of times

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\s*any whitespace character, repeated any number of times

Group quote(?P<quote>["'])

Character Class["']

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

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

(?P=quote)the text saved by group quote

\s+any whitespace character, repeated at least once

classthe literal text class (case sensitive)

\s*any whitespace character, repeated any number of times

=the literal = (61₁₀ / 75₈ / 3D₁₆)

\s*any whitespace character, repeated any number of times

Group q(?P<q>["'])

Character Class["']

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

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

(?P=q)the text saved by group q

Global pattern flags

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

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Search reference

Regular Expression

(<a(?:\s+\w+\s*=\s*(?P<quote>["']).*?(?P=quote))*)\s+class\s*=\s*(?P<q>["']).*?(?P=q)

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