HTML Uniform Resource Locator

URL kaldes også webadresse.

URL kan bestå af ord, såsom “codew3c.com”，eller en internettprotokol (IP) adresse: 192.168.1.253. De fleste mennesker indtaster webadressens domæne, fordi navne er lettere at huske end tal.

URL - Uniform Resource Locator

When you click on a link in an HTML page, the corresponding <a> tag points to an address on the World Wide Web.

Uniform Resource Locator (URL) is used to locate documents (or other data) on the World Wide Web.

Website address, such as http://www.codew3c.com/html/index.asp, follow the following grammar rules:

scheme://host.domain:port/path/filename

Explanation:

  • scheme - Defines the type of Internet service. The most common type is http
  • host - Defines the domain host (the default host for http is www)
  • domain - Defines the Internet domain, such as codew3c.com
  • :port - Defines the port number on the host (the default port number for http is 80)
  • path - Defines the path on the server (if omitted, the document must be located in the root directory of the website).
  • filename - Defines the name of the document/resource

Editor's Note:The full name of URL in English is Uniform Resource Locator, and it is also translated as 'Uniform Resource Locator' in Chinese.

URL Schemes

Here are some of the most popular schemes:

Scheme Access Used for...
http Hypertext Transfer Protocol Normal web pages starting with http://. Not encrypted.
https Secure Hypertext Transfer Protocol Secure Web Page. Encrypts all information exchange.
ftp File Transfer Protocol Used to download or upload files to the website.
file 　 Files on your computer.