Extracting the site URL

[zCat]

Is there any way of determining just the site URL (e.g. just http://www.example.com/) in JavaScript being executed from any page on that site?

If the page has the base tag, it's quite easy:

document.getElementsByTagName('base')[0].href;

I'm wondering if there's a more generic method.

[kaled]

You can construct it from properties of the location object such as protocol and hostname.

Kaled.

[zCat]

Ah, thanks :-). That's what I was looking for, but didn't hit on the right combination of keywords.

I'm a server-side guy myself and have only recently started dabbling in the black arts of client-side scripting ;-)