Regular Expressions 101

Pro

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Group 1(\w+)

\w+any word character, repeated at least once

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

Non-Capturing Group(?:(?:(?:(?!class=|id=|name=)[^>]))*((?:class|id|name)=['"][^'"]*['"]\s*)?)+

+repeats the group contents below at least once:

Non-Capturing Group(?:(?:(?!class=|id=|name=)[^>]))*

*repeats the group contents below any number of times:

Non-Capturing Group(?:(?!class=|id=|name=)[^>])

Negative Lookahead(?!class=|id=|name=)

1st Alternativeclass=

class=the literal text class= (case sensitive)

2nd Alternativeid=

id=the literal text id= (case sensitive)

3rd Alternativename=

name=the literal text name= (case sensitive)

Negated Character Class[^>]

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 2((?:class|id|name)=['"][^'"]*['"]\s*)?

?repeats the group contents below at most once:

Non-Capturing Group(?:class|id|name)

1st Alternativeclass

classthe literal text class (case sensitive)

2nd Alternativeid

idthe literal text id (case sensitive)

3rd Alternativename

namethe literal text name (case sensitive)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Character Class['"]

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negated Character Class[^'"]*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Character Class['"]

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

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

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Detailed match information will be displayed here automatically.

25 tokens

<(\w+)\s*(?:(?:(?:(?!class=|id=|name=)[^>]))*((?:class|id|name)=['"][^'"]*['"]\s*)?)+>

New

<p data="_data" name="someName" style="border: 1px solid black" foo="bar" id="someId" foo="bar" class="someClass" foo="bar">kjasdkfja;lsdkf</p>

<p data="_data" name="someName" style="border: 1px solid black" foo="bar" id="someId" foo="bar" class="someClass" foo="bar">kjasdkfja;lsdkf</p>