// The hash property is a string beginning with a hash (#), that specifies an anchor name in an HTTP URL.
 
window.location.hash;

// The host property is a string comprising of the hostname and port strings.
 
window.location.host;
 
// The hostname property specifies the server name, subdomain and domain name (or IP address) of a URL.
 
window.location.hostname;

// The href property is a string specifying the entire URL, and of which all other Link properties are substrings.
 
window.location.href;
 
// The pathname property is a string portion of a URL specifying how a particular resource can be accessed.
 
window.location.pathname;
 
// The port property is a string specifying the communications port that the server uses.
 
window.location.port;

// The protocol property is the string at the beginning of a URL, up to and including the first colon (:).
 
window.location.protocol;

// The search property is a string beginning with a question mark that specifies any query information in an HTTP URL.
 
window.location.search;
 
// The reload method forces a reload of the window's current document.
 
window.location.reload([forceGet]);
 
// The replace method replaces the current History entry with the specified URL. 
 
window.location.replace(URL);

http://www.devguru.com/technologies/ecmascript/quickref/location.html

The Location object is part of a Window object and is accessed through the window.location property. It contains the complete URL of a given Window object, or, if none is specified, of the current Window object.

JavaScript Location Object

javascript

JavaScript