Regex for url domain

Question

How do i match from these urls:

http://foo.bar.com  
http://bar.com

foo.bar from the first link and bar from the second link using one single regex?

Mark Byers · Accepted Answer · 2010-05-27 18:33:38Z

1

Try this:

^http://(.*)\.com$

Here's how to use it from Python:

import re

for url in ['http://foo.bar.com', 'http://bar.com']:
    print re.match('^http://(.*)\.com$', url).group(1)

Output:

foo.bar
bar

answered May 27, 2010 at 18:28

Mark Byers

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Comments

Peter · Accepted Answer · 2010-05-27 18:29:38Z

1

You didn't mention your language. In Ruby,

>> s = 'http://foo.bar.com'
>> s =~ /\/\/(.*)\./
>> $1
=> "foo.bar"

answered May 27, 2010 at 18:29

Peter

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soulBit · Accepted Answer · 2010-05-27 18:43:30Z

0

In Javascript, you will need to use the same regex as given by Mark Byers, no need to change anything:

var p = new RegExp("^http://(.*)\.com");

var out = p.exec(string_var_here);
if(out != null) {
  var str = out[1];
}

answered May 27, 2010 at 18:43

soulBit

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