Regular Expressions 101

Positive Lookbehind(?<=prefix: )

prefix: the literal text prefix: (case sensitive)

Group 1(<em>(\w*\d*)<\/em>)

<em>the literal text <em> (case sensitive)

Group 2(\w*\d*)

\w*any word character, repeated any number of times

\d*a digit, repeated any number of times

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

em>the literal text em> (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

(?<=prefix: )(<em>(\w*\d*)<\/em>)

New

<em>word1</em> <em>word2</em> <em>word3</em>
prefix: <em>word4</em> <em>word5</em>
<em>word6</em> <em>word7</em>