Regex to exclude specific websites in javascript?

Question

I have a regex which matches all the websites but i want to exclude 2 specific websites from this regex?

Regex is

[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)

Websites I want to exclude are

www.gfycat.com
www.imgur.com
imgur.com/*
gfycat.com/*

Is it possible to write the regex which exludes the specific websites? Any suggestions on how to solve this problem?

/[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/

I have attached the screenshot for match patterns.

Using RES and regex need to be implemented here.

What are you trying to achieve in the end? Replace the text with some other text? Or just collect matches? The technique will be the same: match what you do not need and then match and capture what you need. See this regex demo. The captured text is what you need to allow, else, do not. Have you got the access to the code? — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Jun 20, 2017 at 8:35
How are you using this regex? Are you searching for urls or are you validating them? Can I use a start-of-string anchor ^ in the regex? — Aran-Fey
– Aran-Fey, Commented Jun 20, 2017 at 8:36
Iam using it in Reddit to filter out posts and hide all other posts except gfycat.com and imgur.com posts by matching the regex.If i use the above mentioned regex all the posts are hidden. — SaiKiran
– SaiKiran, Commented Jun 20, 2017 at 8:38
@BackdoorCipher: There is no universal solution for this with a plain single regex. You might try enhancing to this one, but there still may be other edge cases. — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Jun 20, 2017 at 9:04

mkHun · Accepted Answer · 2017-06-20 09:01:12Z

1

Try this

^(?:(?!(?:www\.)?(?:google|gfycat|imgur))[-a-zA-Z0-9@:%._\+~#=]{2,256})\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)

edited Jun 20, 2017 at 9:01

answered Jun 20, 2017 at 8:53

mkHun

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2 Comments

SaiKiran Over a year ago

www.gfycat.com/ABC Fails

mkHun Over a year ago

@BackdoorCipher Some spelling mistake in pattern. Now you can check.

Sudipta Mondal · Accepted Answer · 2017-06-20 08:43:26Z

0

Not sure, why you need regex to do the same. Can you not do something simple like the below, unless I understood it completely wrong.

url = new URL('https://www.google.co.uk/?gfe_rd=cr&ei=bN5IWaP7CYyDtAHKv4CIBg#q=hello');

if url.hostname == 'www.google.com'
// ignore
else
// process

The answer is not relevant to the specific question as OP is using a different tool

edited Jun 20, 2017 at 8:43

answered Jun 20, 2017 at 8:36

Sudipta Mondal

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1 Comment

SaiKiran Over a year ago

I have an extenstion which have filter module and I will attach the Screenshot here.

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