location.host vs location.hostname and cross-browser compatibility?

Question

Which one of these is the most effective vs checking if the user agent is accessing via the correct domain.

We would like to show a small js based \'top bar\' style

Answer 1

MDN: https://developer.mozilla.org/en/DOM/window.location

It seems that you will get the same result for both, but hostname contains clear host name without brackets or port number.