Regular Expressions 101

Positive Lookbehind(?<=<|\s)

1st Alternative<

<the literal < (60₁₀ / 74₈ / 3C₁₆)

2nd Alternative\s

\sany whitespace character

Character Class[a-zA-Z:_]

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

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Character Class[a-zA-Z:_.*]

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

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negated Character Class[^=|\s]+

+matches at least one character outside the set below:

=the literal = (61₁₀ / 75₈ / 3D₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

\sany whitespace character

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

(?<=<|\s)[a-zA-Z:_][a-zA-Z:_.*][^=|\s]+

New

<button type="sasasasasa" abcd="dsqdsq" efgh="sasasa">