Regular Expressions 101

1st Alternative(?:<(\w*)(?:\s[^>]*)*>)((?:(?!<\1).)*)(?:<\/\1>)

Non-Capturing Group(?:<(\w*)(?:\s[^>]*)*>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Group 1(\w*)

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

Non-Capturing Group(?:\s[^>]*)*

*repeats the group contents below any number of times:

\sany whitespace character

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 2((?:(?!<\1).)*)

Non-Capturing Group(?:(?!<\1).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!<\1)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\1the text saved by group 1

.any character (except for line terminators)

Non-Capturing Group(?:<\/\1>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\1the text saved by group 1

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative<(\w*)(?:\s*)*\/>

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Group 3(\w*)

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

Non-Capturing Group(?:\s*)*

*repeats the group contents below any number of times:

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

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?:<(\w*)(?:\s[^>]*)*>)((?:(?!<\1).)*)(?:<\/\1>)|<(\w*)(?:\s*)*\/>

New

<tag>tag content</tag><tag2>another content</tag2><tag3><insideTag>inside content</insideTag><emptyTag /></tag3>