Regular Expressions 101

Explanation

Pro

Non-Capturing Group(?:class="|\G(?!^))

1st Alternativeclass="

class="the literal text class=" (case sensitive)

2nd Alternative\G(?!^)

\Gstart of current search

Negative Lookahead(?!^)

^start of string

Non-Capturing Group(?:(?!st)[^"])*

*repeats the group contents below any number of times:

Negative Lookahead(?!st)

stthe literal text st (case sensitive)

Negated Character Class[^"]

"the literal " (34₁₀ / 42₈ / 22₁₆)

\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match

stthe literal text st (case sensitive)

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

(?:class="|\G(?!^))(?:(?!st)[^"])*\Kst

New

foo st0 st1 st2 bar

class="st0 st1 st2", class="st3 st45", class="st678"

baz="st0 st1 st2"

stx

foo st0 st1 st2 bar

class="st0 st1 st2", class="st3 st45", class="st678"

baz="st0 st1 st2"