regex101: JavaScript Match Workspace

Group 1([-\.\w]+:\/{2,3})

Character Class[-\.\w]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\wany word character

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/{2,3}the literal / (47₁₀ / 57₈ / 2F₁₆) , repeated between 2 and 3 times

Negative Lookahead(?!.*[.]{2})

.*any character (except for line terminators), repeated any number of times

Character Class[.]{2}

{2}matches exactly 2 characters from the set below:

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Negative Lookahead(?![-.*\.])

Character Class[-.*\.]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

*the literal * (42₁₀ / 52₈ / 2A₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 2((?!.*@\.)[-_\w@^=%&:;~+\.]+(?<![-\.]))

Negative Lookahead(?!.*@\.)

.*any character (except for line terminators), repeated any number of times

@the literal @ (64₁₀ / 100₈ / 40₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[-_\w@^=%&:;~+\.]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\wany word character

@the literal @ (64₁₀ / 100₈ / 40₁₆)

^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Negative Lookbehind(?<![-\.])

Character Class[-\.]

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 3(\/[-_\w@^=%&$:;/~+\.]+(?<!\.))?

?repeats the group contents below at most once:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[-_\w@^=%&$:;/~+\.]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\wany word character

@the literal @ (64₁₀ / 100₈ / 40₁₆)

^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

%the literal % (37₁₀ / 45₈ / 25₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

$the literal $ (36₁₀ / 44₈ / 24₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Negative Lookbehind(?<!\.)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[?]?

?matches at most one character from the set below:

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

Group 4([-_\w=&@$!|~+]+)*

*repeats the group contents below any number of times:

Character Class[-_\w=&@$!|~+]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\wany word character

=the literal = (61₁₀ / 75₈ / 3D₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

$the literal $ (36₁₀ / 44₈ / 24₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

Character Class[#]?

?matches at most one character from the set below:

#the literal # (35₁₀ / 43₈ / 23₁₆)

Group 5([-_\w=&@$!|~+]+)*

*repeats the group contents below any number of times:

Character Class[-_\w=&@$!|~+]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\wany word character

=the literal = (61₁₀ / 75₈ / 3D₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

@the literal @ (64₁₀ / 100₈ / 40₁₆)

$the literal $ (36₁₀ / 44₈ / 24₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

|the literal | (124₁₀ / 174₈ / 7C₁₆)

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

+the literal + (43₁₀ / 53₈ / 2B₁₆)

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

26 tokens

Regular Expression

([-\.\w]+:\/{2,3})(?!.*[.]{2})(?![-.*\.])((?!.*@\.)[-_\w@^=%&:;~+\.]+(?<![-\.]))(\/[-_\w@^=%&$:;/~+\.]+(?<!\.))?[?]?([-_\w=&@$!|~+]+)*[#]?([-_\w=&@$!|~+]+)*

New

DB_URL=postgresql://postgres:postgres@localhost/postgres?timeout=0
# Damn, Daniel!

Bob: have you checked https://www.facebook.com?
lorem https://github.com/justsml?tab=activity#top ipsum
smb:///winbox/dfs/ - ipp://printer
leading text chrome-extension://flags??#
s3://buckets/for/all?true=true
s3:///////buckets-o-fun
pkcs11://because-pkcs7-is-weak#only=hash
\||@@https://www.google.com <- should match when extracting
https://we - this is valid
s3://buckets-o-fun/hi/raw=val&#keep=hashin'?
http://aaa.com.co.com:8080/test?dan=dev#den?
hi. pkcs11://because-pkcs7-is-weak
hi. a://b/c?d=e#f=g && a://b/c?d]
hi. chrome-extension://flags hi. 
hi. ms-help://good-luck/index.html hi. 
hi. .iris.beep://really/dots. hi. 
hi. iris.beep://really/dots?test=qs hi. 
---
a://b]/c - Should match `a://b` - it's smallest match.
http://www.c:ool.com.au - this one's tricky, should match auth URIs: proto://user:pass@host. Including cases where the password could be omitted (`proto://user@host`.)
boop://really-/ -- technically domains shouldn't end in dashes or other 'special' chars, but this is technically a valid URI.
---
a://b./c?d. -- bad dns, trailing dot: tricky w/o look-arounds. (Adding an OR pattern would muddle the returned data indexes.) -- should match `a://b`


Invalid Examples:
https://www...google...com
https://we@.com
https://asdas-.com
http://-apple-.com
a://(b/c
chrome-extension)://flags
ms-help://|good-luck.html
. , ; : ) ] }

Regular Expressions 101

Regular Expression

Extraction