jQuery: Returns only part of a text

Question

I want to write a jQuery function that will return only a part of a given text. For example, in the text:

http://somesubdomain.somesite.com/

How can I write a function so that it returns the text "somesubdomain"? In other words, I want to "subtract" the text "http://" and ".somesite.com/".

Thanks in advance

Answer 1

If you are asking for a regex for this then the following (in Perl) should do it, assuming $str contains http://somesubdomain.somesite.com/

$str =~ s/http:\/\/([^.]+)\.somesite\.com\//$1/
print $str;

This prints somesubdomain.

Explanation - The regex captures somesubdomain from the string http://somesubdomain.somesite.com/ into the first back reference and then replaces the entire string with that.

Answer 2

function getSubdomain() {
    var re = /http\:\/\/(\w+)\.somesite\.com\//;
    return (re(document.location)[1]);
}