regex101: JavaScript Match Workspace

Pro

^start of string

Group 1(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?

?repeats the group contents below at most once:

1st Alternativehttp:\/\/www\.

http:the literal text http: (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

wwwthe literal text www (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternativehttps:\/\/www\.

https:the literal text https: (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

wwwthe literal text www (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

3rd Alternativehttp:\/\/

http:the literal text http: (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

4th Alternativehttps:\/\/

https:the literal text https: (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2((([a-z0-9])*[:]){1}|(([a-z0-9])*[.]){1}|(([0-9]){1,3}([.]|[:])){3}(([0-9]){1,3}[:]){1})

1st Alternative(([a-z0-9])*[:]){1}

Group 3(([a-z0-9])*[:]){1}

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

Group 4([a-z0-9])*

*repeats the group contents below any number of times:

Character Class[a-z0-9]

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[:]

:the literal : (58₁₀ / 72₈ / 3A₁₆)

2nd Alternative(([a-z0-9])*[.]){1}

Group 5(([a-z0-9])*[.]){1}

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

Group 6([a-z0-9])*

*repeats the group contents below any number of times:

Character Class[a-z0-9]

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

3rd Alternative(([0-9]){1,3}([.]|[:])){3}(([0-9]){1,3}[:]){1}

Group 7(([0-9]){1,3}([.]|[:])){3}

{3}repeats the group contents below exactly 3 times:

Group 8([0-9]){1,3}

{1,3}repeats the group contents below between 1 and 3 times:

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 9([.]|[:])

1st Alternative[.]

Character Class[.]

.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative[:]

Character Class[:]

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Group 10(([0-9]){1,3}[:]){1}

Group 12([a-z]{2,5}|[0-9]{1,5})

Group 13([.]([a-z0-9]){1,3})?

Group 15(\/.*)?

$end of string

Global pattern flags

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

26 tokens

Regular Expression

^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?((([a-z0-9])*[:]){1}|(([a-z0-9])*[.]){1}|(([0-9]){1,3}([.]|[:])){3}(([0-9]){1,3}[:]){1})([a-z]{2,5}|[0-9]{1,5})([.]([a-z0-9]){1,3})?(\/.*)?$

Regular Expressions 101

Regular Expression

Unit Tests