HTML URL TAG

URLs are also known as Uniform Resource Locator .They are the address that you provide in the address  bar . They provide links to the other pages on the web or on your own website . URL tags in HTML are used in three different ways .


fully qualified URL - They consist of scheme , domain name and path .

e.g.
http://tutorials-pedia.blogspot.com/2010/09/xhtml-tutorials-and-tags.html - In this case

http: - scheme

//tutorials-pedia.blogspot.com - domain name

 /2010/09/xhtml-tutorials-and-tags.html- path


absolute link - Only the path portion of the address is placed in the href value .It begins with the website’s root (/) .

relative link - Relative links use the context of the current location of web page to infer the complete URL .

Consider a file structure in your computer as

      a.html
      b.html
      ABC(folder)
         c.html(file)
         d.html
      DEF
         e.html
         f.html


If I am currently at a.html and i want to visit b.html I can refer to it as

<a href="b.html">b</a>

To refer to c.html from a.html

<a href="ABC/c.html">c</a>


If I am currently at c.html but I have to refer to a.html then

<a href="../a.html">a</a>

../ - moves us one folder level up from current folder .


Use of relative or absolute links prevents typing of domain name over and over again and makes the site more portable in case domain name changes in the future.