regex101: JavaScript Match Workspace

^start of line

Group 1((?:(?:http|ftp|ws)s?|sftp):\/\/?)?

?repeats the group contents below at most once:

Non-Capturing Group(?:(?:http|ftp|ws)s?|sftp)

1st Alternative(?:http|ftp|ws)s?

Non-Capturing Group(?:http|ftp|ws)

1st Alternativehttp

httpthe literal text http (case sensitive)

2nd Alternativeftp

ftpthe literal text ftp (case sensitive)

3rd Alternativews

wsthe literal text ws (case sensitive)

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

2nd Alternativesftp

sftpthe literal text sftp (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2([^:/\s.#?]+\.[^:/\s#?]+|localhost)

1st Alternative[^:/\s.#?]+\.[^:/\s#?]+

Negated Character Class[^:/\s.#?]+

+matches at least one character outside the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

\sany whitespace character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Negated Character Class[^:/\s#?]+

+matches at least one character outside the set below:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

\sany whitespace character

#the literal # (35₁₀ / 43₈ / 23₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

2nd Alternativelocalhost

localhostthe literal text localhost (case sensitive)

Group 3(:\d+)?

?repeats the group contents below at most once:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\d+a digit, repeated at least once

Group 4((?:\/\w+)*\/)?

?repeats the group contents below at most once:

Non-Capturing Group(?:\/\w+)*

*repeats the group contents below any number of times:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\w+any word character, repeated at least once

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 5([\w\-.]+[^#?\s]+)?

?repeats the group contents below at most once:

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)

Negated Character Class[^#?\s]+

+matches at least one character outside the set below:

#the literal # (35₁₀ / 43₈ / 23₁₆)

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

\sany whitespace character

Group 6([^#]+)?

?repeats the group contents below at most once:

Negated Character Class[^#]+

+matches at least one character outside the set below:

#the literal # (35₁₀ / 43₈ / 23₁₆)

Group 7(#[\w-]*)?

?repeats the group contents below at most once:

#the literal # (35₁₀ / 43₈ / 23₁₆)

Character Class[\w-]*

*matches any number of characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

$end of line

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

Search reference

Regular Expression

^((?:(?:http|ftp|ws)s?|sftp):\/\/?)?([^:/\s.#?]+\.[^:/\s#?]+|localhost)(:\d+)?((?:\/\w+)*\/)?([\w\-.]+[^#?\s]+)?([^#]+)?(#[\w-]*)?$

Regular Expressions 101

Regular Expression

Unit Tests