Regular Expressions 101

Non-Capturing Group(?:src|href)

1st Alternativesrc

srcthe literal text src (case sensitive)

2nd Alternativehref

hrefthe literal text href (case sensitive)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

.any character (except for line terminators)

Negated Character Class[^'"]*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

\sany whitespace character

Negated Character Class[^'"]*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Character Class['"]

'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|href)=.[^'"]*\s[^'"]*['"]

New

<iframe src="http://some.url " width="600px" ></iframe>
<iframe href='http://some.url' width="600px" ></iframe>
<iframe src="http ://some.url" width="600px" ></iframe>
<iframe src='http ://some.url' width="600px" ></iframe>
<iframe src='http
://some.url' width="600px" ></iframe>

Regular Expression

Extraction