regular expression for web site

Question

i am working with jquery and i was wondering what is the best regular expression for web site that will allow the following examples :

http://www.google.com
https://www.google.com
www.google.com
google.com

i was using this expression but its not working with all the examples .

[A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?

possible duplicate of [What is the best regular expression to check if a string is a valid URL?](http://stackoverflow.com/questions/161738/what-is-the-best-regular-expression-to-check-if-a-string-is-a-valid-url) — user229044, Jul 30 '14 at 02:41

score 0 · Answer 1 · answered Jul 30 '14 at 02:32

0

Made this one for you:

(https?://)?(www\.)?google.com

You can test it here: http://regexpal.com/

answered Jul 30 '14 at 02:32

Vennik

565
3
11

google was just an exemple i need an expression for all websites – user3882546 Jul 30 '14 at 02:34
little ajustment: (https?://)?(www\.)?(.*)\.(.*) – Vennik Jul 30 '14 at 02:36
You need to escape the `.` between the two `(.*)` capture groups. – RevanProdigalKnight Jul 30 '14 at 02:37
and how about url that begin with http only not https – user3882546 Jul 30 '14 at 02:37
@user3882546 the `?` after the `s` means that there can be 0 or 1 occurrences of the character. – RevanProdigalKnight Jul 30 '14 at 02:38

Trevor Hutto · Answer 2 · 2014-07-30T02:40:31.317

0

Try this one

UPDATED to include 'google.com'

^((ht|f)tp(s?)\:\/\/)?(([a-zA-Z0-9\-\._]+(\.[a-zA-Z0-9\-\._]+)+)|localhost)(\/?)([a-zA-Z0-9\-\.\?\,\'\/\\\+&amp;%\$#_]*)?([\d\w\.\/\%\+\-\=\&amp;\?\:\\\&quot;\'\,\|\~\;]*)$

edited Jul 30 '14 at 02:40

answered Jul 30 '14 at 02:35

Trevor Hutto

2,112
4
21
29

score 0 · Answer 3 · answered Jul 30 '14 at 03:26

0

If you only want to verify domains you could try this:

(\w{3,9}:\/\/)?([wW]\.)?([\w\d_%\-:=]+(\.|$|\b)){2,}

answered Jul 30 '14 at 03:26

Chris

339
4
17

regular expression for web site

3 Answers3