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I want to get just the domain name(yahoo, google, stackoverflow) from the domain in javascript. How can I easily pull just this out and drop any subdomain and any extension?

See comment, I need it to work for any domain if possible.

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  • I need it to work for any domain and TLD extension. www.test.com or test.com or something.test.co.uk. Commented Mar 31, 2009 at 15:11
  • 2
    It's a non-trivial problem if you need any TLD. you need a database of rules for all of the different ccTLD's, and even then there are exceptions. Commented Mar 31, 2009 at 15:22

5 Answers 5

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4

See how to get domain name from URL

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2

Try this function:

"www.google.com".match(/\.?([^.]+)\.[^.]+.?$/)[1]
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1 Comment

almost, but fails for cases like 'google.com.br' (jsfiddle.net/dvHmJ). Better answers in here: stackoverflow.com/questions/8253136/…
1 
var domain = 'http://www.google.com/';
var parts = domain.toString().split('.'.toString());
parts[parts.length - 2];
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1

i needed to do this and whipped up something simple that accounted for my use case

function stripSubDomainAndTLD (domain) {
    return domain.replace(/^(?:[a-z0-9\-\.]+\.)??([a-z0-9\-]+)(?:\.com|\.net|\.org|\.biz|\.ws|\.in|\.me|\.co\.uk|\.co|\.org\.uk|\.ltd\.uk|\.plc\.uk|\.me\.uk|\.edu|\.mil|\.br\.com|\.cn\.com|\.eu\.com|\.hu\.com|\.no\.com|\.qc\.com|\.sa\.com|\.se\.com|\.se\.net|\.us\.com|\.uy\.com|\.ac|\.co\.ac|\.gv\.ac|\.or\.ac|\.ac\.ac|\.af|\.am|\.as|\.at|\.ac\.at|\.co\.at|\.gv\.at|\.or\.at|\.asn\.au|\.com\.au|\.edu\.au|\.org\.au|\.net\.au|\.id\.au|\.be|\.ac\.be|\.adm\.br|\.adv\.br|\.am\.br|\.arq\.br|\.art\.br|\.bio\.br|\.cng\.br|\.cnt\.br|\.com\.br|\.ecn\.br|\.eng\.br|\.esp\.br|\.etc\.br|\.eti\.br|\.fm\.br|\.fot\.br|\.fst\.br|\.g12\.br|\.gov\.br|\.ind\.br|\.inf\.br|\.jor\.br|\.lel\.br|\.med\.br|\.mil\.br|\.net\.br|\.nom\.br|\.ntr\.br|\.odo\.br|\.org\.br|\.ppg\.br|\.pro\.br|\.psc\.br|\.psi\.br|\.rec\.br|\.slg\.br|\.tmp\.br|\.tur\.br|\.tv\.br|\.vet\.br|\.zlg\.br|\.br|\.ab\.ca|\.bc\.ca|\.mb\.ca|\.nb\.ca|\.nf\.ca|\.ns\.ca|\.nt\.ca|\.on\.ca|\.pe\.ca|\.qc\.ca|\.sk\.ca|\.yk\.ca|\.ca|\.cc|\.ac\.cn|\.com\.cn|\.edu\.cn|\.gov\.cn|\.org\.cn|\.bj\.cn|\.sh\.cn|\.tj\.cn|\.cq\.cn|\.he\.cn|\.nm\.cn|\.ln\.cn|\.jl\.cn|\.hl\.cn|\.js\.cn|\.zj\.cn|\.ah\.cn|\.gd\.cn|\.gx\.cn|\.hi\.cn|\.sc\.cn|\.gz\.cn|\.yn\.cn|\.xz\.cn|\.sn\.cn|\.gs\.cn|\.qh\.cn|\.nx\.cn|\.xj\.cn|\.tw\.cn|\.hk\.cn|\.mo\.cn|\.cn|\.cx|\.cz|\.de|\.dk|\.fo|\.com\.ec|\.tm\.fr|\.com\.fr|\.asso\.fr|\.presse\.fr|\.fr|\.gf|\.gs|\.co\.il|\.net\.il|\.ac\.il|\.k12\.il|\.gov\.il|\.muni\.il|\.ac\.in|\.co\.in|\.org\.in|\.ernet\.in|\.gov\.in|\.net\.in|\.res\.in|\.is|\.it|\.ac\.jp|\.co\.jp|\.go\.jp|\.or\.jp|\.ne\.jp|\.ac\.kr|\.co\.kr|\.go\.kr|\.ne\.kr|\.nm\.kr|\.or\.kr|\.li|\.lt|\.lu|\.asso\.mc|\.tm\.mc|\.com\.mm|\.org\.mm|\.net\.mm|\.edu\.mm|\.gov\.mm|\.ms|\.nl|\.no|\.nu|\.pl|\.ro|\.org\.ro|\.store\.ro|\.tm\.ro|\.firm\.ro|\.www\.ro|\.arts\.ro|\.rec\.ro|\.info\.ro|\.nom\.ro|\.nt\.ro|\.se|\.si|\.com\.sg|\.org\.sg|\.net\.sg|\.gov\.sg|\.sk|\.st|\.tf|\.ac\.th|\.co\.th|\.go\.th|\.mi\.th|\.net\.th|\.or\.th|\.tm|\.to|\.com\.tr|\.edu\.tr|\.gov\.tr|\.k12\.tr|\.net\.tr|\.org\.tr|\.com\.tw|\.org\.tw|\.net\.tw|\.ac\.uk|\.uk\.com|\.uk\.net|\.gb\.com|\.gb\.net|\.vg|\.sh|\.kz|\.ch|\.info|\.ua|\.gov|\.name|\.pro|\.ie|\.hk|\.com\.hk|\.org\.hk|\.net\.hk|\.edu\.hk|\.us|\.tk|\.cd|\.by|\.ad|\.lv|\.eu\.lv|\.bz|\.es|\.jp|\.cl|\.ag|\.mobi|\.eu|\.co\.nz|\.org\.nz|\.net\.nz|\.maori\.nz|\.iwi\.nz|\.io|\.la|\.md|\.sc|\.sg|\.vc|\.tw|\.travel|\.my|\.se|\.tv|\.pt|\.com\.pt|\.edu\.pt|\.asia|\.fi|\.com\.ve|\.net\.ve|\.fi|\.org\.ve|\.web\.ve|\.info\.ve|\.co\.ve|\.tel|\.im|\.gr|\.ru|\.net\.ru|\.org\.ru|\.hr|\.com\.hr)$/, '$1');
}

mainly i just wanted to remove all subdomains, unfortunately this isn't 100% for some of the new TLD's but it works pretty well, and you can always add to the regex.

http://jsfiddle.net/icodeforlove/TzjJE/2/

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0

Just extend the window.location object to support MLD (Mid Level Domain).

window.location.mld = function() {
    return window.location.hostname.split('.').reverse()[1];
}();

Use it like this: window.location.mld

Which will output google if you're on www.google.com

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4 Comments

Huh. Why would you add this function to the location object instead of somewhere else?
Because it's a part of the url, the rest of the methods of window.location is too, so in my opinion it fits.
Wouldn't it better in the URL prototype object, then? (Is there something like this? My JavaScript knowledge is a bit rusty.)
There is nothing like the URL object, the nearest thing is actually the Location object.