Location
The Location interface represents the location (URL) of the object it is linked to. Changes done on it are reflected on the object it relates to. Both the Document and Window interface have such a linked Location, accessible via Document.location and Window.location respectively.
Properties
The ancestorOrigins read-only property of the Location interface is a static DOMStringList containing, in reverse order, the origins of all ancestor browsing contexts of the document associated with the given Location object.
The hostname property of the Location interface is a string containing either the domain name or IP address of the location URL. If the URL does not have a hostname, this property contains an empty string, "". IPv4 and IPv6 addresses are normalized, such as stripping leading zeros, and domain names are converted to IDN.
The pathname property of the Location interface is a string containing the path of the URL for the location. If there is no path, pathname will be empty: otherwise, pathname contains an initial '/' followed by the path of the URL, not including the query string or fragment.
Functions
The assign() method of the Location interface causes the window to load and display the document at the URL specified. After the navigation occurs, the user can navigate back to the page that called Location.assign() by pressing the "back" button.
The replace() method of the Location interface replaces the current resource with the one at the provided URL. The difference from the assign() method is that after using replace() the current page will not be saved in session History, meaning the user won't be able to use the back button to navigate to it. Not to be confused with the String method String.prototype.replace().