Regular Expressions 101

<div class=splr-b>the literal text <div class=splr-b> (case sensitive)

Group 1((?:[^<]|<(?!div>)|(?R))+)

Non-Capturing Group(?:[^<]|<(?!div>)|(?R))+

+repeats the group contents below at least once:

1st Alternative[^<]

Negated Character Class[^<]

<the literal < (60₁₀ / 74₈ / 3C₁₆)

2nd Alternative<(?!div>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Negative Lookahead(?!div>)

div>the literal text div> (case sensitive)

3rd Alternative(?R)

(?R)recurses into the entire pattern

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

div>the literal text div> (case sensitive)

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

<div class=splr-b>((?:[^<]|<(?!div>)|(?R))+)<\/div>

New

это спойлер
<div class=splr-b>а тут спойлер в спойлере<div class=splr-h>Спойлер: показать</div>еще текст</div>
смайлик [язык] и еще  [смущаюсь]