The hostname property represents the hostname portion of the URL.
<html> <head> <title> Using the hostname property of the Location object</title> </head> <body> <script language="JavaScript"> <!-- function show(){ alert(document.location.hostname); } --> </script> <form name="form1"> Click the button to get the current location.hostname <br> http://www.navioo.com <br> <input type="button" name="gethost" value="Get hostname" onClick='show()'> <br> </form> </body> </html>