Regular Expressions 101

<athe literal text <a (case sensitive)

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

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

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

Negated Character Class[^"]+

+matches at least one character outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

<a.*?href="\K[^"]+

New

<h1><a href="http://www.website.com/article/slug-that-has-undetermined-amount-of-hyphens/12345">Whatever</a></h1>
<p>Here is a url as plain text: http://www.website.com/article/sluggy-slug</p>
<div>Here is a qualifying link: <a href="http://www.website.com/article/slugger-sluggington-jr/666">Whatever</a></div>