Regular Expressions 101

Negative Lookbehind(?<![\w\-]="|")

1st Alternative[\w\-]="

Character Class[\w\-]

\wany word character

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

="the literal text ="

2nd Alternative"

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negative Lookbehind(?<![\w\-]=|>)

1st Alternative[\w\-]=

Character Class[\w\-]

\wany word character

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

2nd Alternative>

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Negative Lookbehind(?<!#|>)

1st Alternative#

#the literal # (35₁₀ / 43₈ / 23₁₆)

2nd Alternative>

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 1(https?:\/\/[\w\-\.!~?&=+\*'(),\/\#\:]+)

httpthe literal text http (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[\w\-\.!~?&=+\*'(),\/\#\:]+

+matches at least one character from the set below:

\wany word character

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\#the literal # (35₁₀ / 43₈ / 23₁₆)

\:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 2((?!\<\/\w\>))*?

*?repeats the group contents below any number of times:

Negative Lookahead(?!\<\/\w\>)

\<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\wany word character

\>the literal > (62₁₀ / 76₈ / 3E₁₆)

Global pattern flags

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

No unit tests · Add a test to get started

Search reference

Regular Expression

(?<![\w\-]="|")(?<![\w\-]=|>)(?<!#|>)(https?:\/\/[\w\-\.!~?&=+\*'(),\/\#\:]+)((?!\<\/\w\>))*?

Unit Tests

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