Regular Expressions 101

^start of string

Non-Capturing Group(?:https?:\/\/)?

?repeats the group contents below at most once:

httpthe literal text http (case insensitive)

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 1([-\w.]+\.[\w]+){1}

{1}repeats the group contents below exactly 1 time:

Character Class[-\w.]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\wany word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w]+

+matches at least one character from the set below:

\wany word character

Group 2(\/[\/\d\w\.\-\?\+\&\#\=\~]*)?

?repeats the group contents below at most once:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[\/\d\w\.\-\?\+\&\#\=\~]*

*matches any number of characters from the set below:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\da digit

\wany word character

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\&the literal & (38₁₀ / 46₈ / 26₁₆)

\#the literal # (35₁₀ / 43₈ / 23₁₆)

\=the literal = (61₁₀ / 75₈ / 3D₁₆)

\~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

$end of string

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

No unit tests · Add a test to get started

Search reference

Regular Expression

^(?:https?:\/\/)?([-\w.]+\.[\w]+){1}(\/[\/\d\w\.\-\?\+\&\#\=\~]*)?$

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