Returns the host portion of the URL.
The URL.getHost function returns the
host portion of the given absolute or relative URL. If the URL does not
contain a host portion, an empty string is returned. An invalid URL
syntax will cause an invalid to be returned.
The syntax of a URL is: scheme://host:port/path;parameters$query#fragment
You can use the following functions to get the various portions of the URL:
| Portion | Function |
| scheme | getScheme(url) |
| host | getHost(url) |
| port | getPort(url) |
| path | getPath(url) |
| parameters | getParameters(url) |
| query | getQuery(url) |
| fragment | getFragment(url) |