The window.location object can be used to get the current page address (URL) and to redirect the browser to a new page.
Code
<p id="demooo"></p>
<script>
document.getElementById("demooo").innerHTML =
"The full URL of this page is:<br>" + window.location.href;
</script>
JavaScript provides you with many methods to retrieve and change the current URL, which is displayed in the browser’s address bar. All these methods use the Location object, which is a property of the Window object. You can create a new Location object that has the current URL as follows:
var currentLocation = window.location;
Basic URL Structure
protocol: Specifies the protocol name be used to access the resource on the Internet. (HTTP (without SSL) or HTTPS (with SSL))
hostname: Host name specifies the host that owns the resource. For example, www.stackoverflow.com. A server provides services using the name of the host.
port: A port number used to recognize a specific process to which an Internet or other network message is to be forwarded when it arrives at a server.
pathname: The path gives info about the specific resource within the host that the Web client wants to access. For example, /index.html.
search: A query string follows the path component, and provides a string of information that the resource can utilize for some purpose (for example, as parameters for a search or as data to be processed).
hash: The anchor portion of a URL, includes the hash sign (#).With these Location object properties you can access all of these URL components and what they can set or return:
href - the entire URL
protocol - the protocol of the URL
host - the hostname and port of the URL
hostname - the hostname of the URL
port - the port number the server uses for the URL
pathname - the path name of the URL
search - the query portion of the URL
hash - the anchor portion of the URL