As the complement of getting the domain name out of a URL and get domain name from URL using javascript, here is another way to get domain name using javascript.

If you are running a script in a website you can find out the domain name of the website by using document.domain property.

var mydomain=document.domain;

We can find out the domain name from URL by using location.hostname property.

var mydomain=window.location.hostname;

or we can also use location.href property but it’s a little harder.

var mydomain=window.location.href.match(/:\/\/(.[^/]+)/)[1];

The hostname property can be set to redirect location, but it is safer to set the href property.

In web programming, sometimes we need to get the domain name out of the url. Here how to do it:

<?php
// get host name from URL
preg_match(‘@^(?:http://)?([^/]+)@i’, “http://www.php.net/index.html“, $matches);
$host = $matches[1];

// get last two segments of host name
preg_match(‘/[^.]+\.[^.]+$/’, $host, $matches);
echo “domain name is: {$matches[0]}\n”;
?>

What’s the hell that code means!