Regular Expressions 101

Group 1(<li>)

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

Group 2(\s*<p>[MDCLXVI]+)

\s*any whitespace character, repeated any number of times

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

Character Class[MDCLXVI]+

+matches at least one character from the set below:

Mthe literal M (77₁₀ / 115₈ / 4D₁₆) (case sensitive)

Dthe literal D (68₁₀ / 104₈ / 44₁₆) (case sensitive)

Cthe literal C (67₁₀ / 103₈ / 43₁₆) (case sensitive)

Lthe literal L (76₁₀ / 114₈ / 4C₁₆) (case sensitive)

Xthe literal X (88₁₀ / 130₈ / 58₁₆) (case sensitive)

Vthe literal V (86₁₀ / 126₈ / 56₁₆) (case sensitive)

Ithe literal I (73₁₀ / 111₈ / 49₁₆) (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

(<li>)(\s*<p>[MDCLXVI]+)

<li>
  <p>I - blablabla</p>
</li>
<li>
  <p>II - blablabla</p>
</li>
<li>
  <p>III - blablabla</p>
</li>

<li class="inciso">\2