Regular Expressions 101

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:\b(?!(?:div|tag)\b))

\ban ASCII word boundary

Negative Lookahead(?!(?:div|tag)\b)

Non-Capturing Group(?:div|tag)

1st Alternativediv

divthe literal text div (case sensitive)

2nd Alternativetag

tagthe literal text tag (case sensitive)

\ban ASCII word boundary

Group 1([a-zA-Z0-9]+)

Character Class[a-zA-Z0-9]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

.*?any character (except for line terminators), repeated any number of times

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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

<\/?(?:\b(?!(?:div|tag)\b))([a-zA-Z0-9]+).*?>

<div> <diva a> <a> <h9>