regex101: JavaScript Substitution Workspace

Pro

1st Alternative(<[^<>\/]+>)\s+

Group 1(<[^<>\/]+>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Negated Character Class[^<>\/]+

+matches at least one character outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\s+any whitespace character, repeated at least once

2nd Alternative\s+(<\/[^<>]+>)

\s+any whitespace character, repeated at least once

Group 2(<\/[^<>]+>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Negated Character Class[^<>]+

+matches at least one character outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>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

26 tokens

Regular Expression

(<[^<>\/]+>)\s+|\s+(<\/[^<>]+>)

<b1> <c> "The Modern Amphibians" </c> </b1>
Modern <b>amphibians </b> have a simplified <key2>anatomy </key2> compared to their ancestors due to <i>  paedomorphosis</i>. 
Caused by two evolutionary trends: <b2> miniaturization  </b2> and an unusually.
Don’t think that this term’s work will be <key23> a piece of cake </key23>

Extraction

<b1> <c> "The Modern Amphibians" </c> </b1>
Modern <b>amphibians </b> have a simplified <key2>anatomy </key2> compared to their ancestors due to <i>  paedomorphosis</i>. 
Caused by two evolutionary trends: <b2> miniaturization  </b2> and an unusually.
Don’t think that this term’s work will be <key23> a piece of cake </key23>