javascript:How to extract country code from url using regex

Question

there is country code in url which i need to extract by regex and javascript.

so my possible url would be

http://localhost:2020/gb/index.aspx

http://example:2020/gb/index.aspx

these code i tried but regex works for a specific type of url.

var url = "http://example.com/gb/index.aspx";
//Get the language code
var countrycode = /com\/([^\/]+)/.exec(url)[1];

the above code works when url look like http://example.com/gb/index.aspx but the moment url look like http://localhost:2020/gb/index.aspx or http://example:2020/gb/index.aspx then above code does not works. so tell me which regex i need to use which can extract country code from above 3 different kind of url. need some hint. thanks

try `location.pathname.split('/')[1]`. In this page returns `"questions"` — charlietfl, Nov 26 '17 at 11:59
If country will always be the after the domain, like that, charliefl's suggestion works: it breaks up the string in array elems split by `/` character. And you want the second element of that array. — tao, Nov 26 '17 at 12:03
@charlietfl i tried this `var url="http://mysite:2020/gb/index.aspx"; alert(url.split('/')[1]);` but no luck. — Mou, Nov 26 '17 at 12:06
if it's always 2 letter county code, try this: https://regex101.com/r/zU4vX8/3` — Kresimir Pendic, Nov 26 '17 at 12:07
@charlietfl this works `var url="http://mysite:2020/gb/index.aspx"; alert(url.split('/')[3]);` — Mou, Nov 26 '17 at 12:09
@KresimirPendic your regex return /gb/ but i want gb without country code. so what regex i need to use? — Mou, Nov 26 '17 at 12:13

score 3 · Accepted Answer · edited Nov 26 '17 at 12:49

3

^.{8}[^\/]*\/([^\/]*)

^ : anchor at start
.{8} :skip over first 8 chars (http(s)://)
[^\/]: match over any chars except '/'
\/ match the first slash after that
([^\/]*) : create a new group and match any char except '/' (this is the country code)

var urls = [
  "http://example.com/gb/index.aspx",
  "http://localhost:2020/gb/index.aspx",
  "http://example:2020/gb/index.aspx"
];

var rxGetCountryCode = /^.{8}[^\/]*\/([^\/]*)/;

urls.forEach(function (str) {
  console.log(rxGetCountryCode.exec(str)[1]);
});

edited Nov 26 '17 at 12:49

Useless Code

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answered Nov 26 '17 at 12:10

John

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I added the other URLs to your example for completeness. I also added the an item explaining the slash after `[^\/]`; OP seems to understand what you were doing, but just in case someone finds this in the future who doesn't understand RegEx as well. – Useless Code Nov 26 '17 at 12:53

javascript:How to extract country code from url using regex

so my possible url would be

1 Answers1