Question

I have a standard URL e.g.

http://www.test.com/test1/test2.html

I am using javascript in riak for map reduce and would like to only extract http://www.test.com. So…the domain and the subdomain.

What is the most efficient method to do this in js since I will have millions of records?

Thanks

Answer 1

Look at this answer: https://stackoverflow.com/a/8498629/623400

var matches = url.match(/^https?\:\/\/([^\/?#]+)(?:[\/?#]|$)/i);
var domain = matches && matches[1];  // domain will be null if no match is found

Sophisticated domain matching is kinda tricky, but all this is covered quite well in the linked post.