Regular Expressions 101

Non-Capturing Group(?:src|action|href)

1st Alternativesrc

srcthe literal text src (case sensitive)

2nd Alternativeaction

actionthe literal text action (case sensitive)

3rd Alternativehref

hrefthe literal text href (case sensitive)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Character Class[\'"]

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

"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

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Negative Lookahead(?!/)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Negated Character Class[^\'"]*

*matches any number of characters outside the set below:

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

"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

(?:src|action|href)=[\'"]\K/(?!/)[^\'"]*

New

<img src="/relative/url/img.jpg" />
<form action="/">
<form action="/contact-us/">
<a href='/relative/url/'>Note the Single Quote</a>
<img src="//site.com/protocol-relative-img.jpg" />

Regular Expression

Extraction