Regular Expressions 101

Positive Lookbehind(?<=['"])

Character Class['"]

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

jpgthe literal text jpg (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.

Search reference

Regular Expression

(?<=['"])\d+\.jpg

New

<html>

<body>
<a href='1.jpg'><img src='tn1.jpg /></a>
<a href='2.jpg'><img src='tn2.jpg /></a>
<a href='3.jpg'><img src='tn3.jpg /></a>
<a href='4.jpg'><img src='tn4.jpg /></a>
</body>
</html>

Regular Expression

Substitution