what is an href code example

Example 1: html a href

<a href="http://example.com" >Link text</a>

Example 2: a href tag

Actually href is a html attribute, which is used for passing page url to the a tag.
Example
<a href="url">Click here</a>

Example 3: a href

<a href="#"><!-- The "#" to be replaced with filename or website address -->Go Somewhere</a>