regex101: html tags

^start of line

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Non-Capturing Group(?:([A-Za-z0-9][A-Za-z0-9]*)\b[^>]*>(?:.*?)<\/\1>|[A-Za-z0-9][A-Za-z0-9]*\b[^>]*\/>)

1st Alternative([A-Za-z0-9][A-Za-z0-9]*)\b[^>]*>(?:.*?)<\/\1>

Group 1([A-Za-z0-9][A-Za-z0-9]*)

Character Class[A-Za-z0-9]

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

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

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

Character Class[A-Za-z0-9]*

*matches any number of characters from the set below:

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

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

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

\ban ASCII word boundary

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Non-Capturing Group(?:.*?)

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

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\1the text saved by group 1

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative[A-Za-z0-9][A-Za-z0-9]*\b[^>]*\/>

Character Class[A-Za-z0-9]

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

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

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

Character Class[A-Za-z0-9]*

*matches any number of characters from the set below:

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

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

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

\ban ASCII word boundary

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

^<(?:([A-Za-z0-9][A-Za-z0-9]*)\b[^>]*>(?:.*?)<\/\1>|[A-Za-z0-9][A-Za-z0-9]*\b[^>]*\/>)$

New

<strong>strong</strong>
<hr />
<div>element</section>
<span class="blue-span" id="spnner">span this!</span>