Default Protocol and Port Number of a URL
What Happens If Protocol or Port Number Is Missing in a URL?
From a syntax point of view, all URL parts are optional. If some parts are not included in a URL, the browser and the hosting computer will provide default values. Here are some rules about the protocol name, host name, and port number:
1. If the protocol name part is missing, but the host name part is given, "http://" will be used as the default value. The following URLs are identical:
2. If the port number part is missing, but the host name part is given, the default port number that matches the protocol name will be used. The following URLs are identical:
dev.fyicenter.com/faq/xhtml/ dev.fyicenter.com:80/faq/xhtml/ http://dev.fyicenter.com/faq/xhtml/ http://dev.fyicenter.com:80/faq/xhtml/
3. If the port number part is given, the host name part must be specified. The following URLs are invalid:
2017-07-07, 501👍, 0💬
How To Use an Array as a Stack in PHP? A stack is a simple data structure that manages data elements...
How To Control Horizontal Alignment in Table Cells? By default, text in all table cells are aligned ...
How To Use Different Markers on Ordered List Items? By default, browsers will use decimal numbers as...
How To Support Hidden Form Fields in PHP? Hidden fields are special fields in a form that are not sh...
What Is an HTML "em" Tag/Element? An "em" element is an inline element that you can use to specify t...