Links are used to access other webpages and the pages within a website. Without links, the World Wide Web will be much of a locked resource and it wouldn't have come this far. In HTML, links are noted with an anchor <a> tag, as the name says anchor that links other portion of the web.
<a href="http://webpage.html">Your Website</a>
An anchor starts with a <a> tag. Then to link with the other pages, href attribute is used where the URL is denoted inside double quotes. Before closing the anchor tag, the name for the link should be made, as the user knows what is that link about.
<a href="http://codecrypton.in" tabindex="1">Code Crypton</a>
<a href="http://google.com" tabindex="2">Google</a>
<a href="http://yahoo.com" tabindex="3">Yahoo</a>
When using the browser, the browser options and other parts of links in a webpage can be accessed using the tab key. So, HTML gives an option where the links can be accessed in a arranged order.
This is done using the tabindex attribute, where numbers are denoted in the order in which the tab moves places among links.
<a href="http://codecrypton.in" title="Code Crypton Website">Codecrypton</a>
Sometimes to give additional details to a link, the title attribute is used. When the mouse pointer moves over to the link a simple box pop-up to give information that is added in the title attribute.