Port is a property of both the Link and the Location objects and is a string specifying the communications port that the server uses. If this is the default of 80, then it is not specified, with the result that the hostname property will be the same as the host property. Assuming a link (stored in the first element of the links property) to a URL ...

http://home.newco.com/products/enquiries.htm#local?email=name@otherco.com

...the following code would display the port property of it:

Code:
document.write(document.links[0].port)

Output:
80

NOTE:

Although the port property can be set at any time, it is safer to set the href property to change a link.