What is Html



HTML is a markup language commonly used to create Web pages.A Markup language provides a way to describe the structure of text and graphics on a Web page.Html is developed and maintained by world wide web consortium (W3C). It is derived from a more general markup language called Standard Generalized Markup Language (SGML), which is an international Organixzation for Standardization (ISO) technology that defines markup language .In HTML,the term hyper signifies the navigation from one location to another in a non-linear fashion.In other words, clicking a hypertext on a Web page takes you to the relevant page on the Web site or Internet which is not necessarily the next page on the web site.HTML defines the content i.e. the structure and the layout of a Webpages with the help of elements and attributes.An element include that start and end tags,with some content within them and attributes provide additional information (such as alignment of element of element on a web page) about the elements. The  different versions of HTML are described as follows:

HTML 1.0

provides the idea of separation between the logical structure and presentational elements in a web page.HTML 1.0 has been released in 1992 its specification has only 22 elements ,comprising the initial simple design of HTML.

HTML 2.0

Refers to an updated version of HTML ,which includes new features, such as file uploading through a from, tables and client-side images maps . This version has been released in 1995.

HTML 3

Refers to a version that includes the addition of FIG, LISTS,Linkand NOte element.It Provides support for style sheets by including a Style elements and a class attribute. This version was introduced in 1996 .In early 1997, a new version, Html 3.2 was released with the Character Data (CDATA) attributes and Document Type Declaration(DTD)feature to  define the stucture of an HTML document it has also omitted some features of HTML3.1such as math formulas and the BLINK and MARQUEE elements.

HTML 4

Refers to a version that has introduced new elements for style sheets scripts, frames, embedded objects complex tables and forms.Apart from this, it has provided improved accessibility features such as accessing a form. A new version, HTML4.01, of HTML was also released. This version has added the id attribute for all elements and has expanded the OBJECT element to include Java applets or any kink of external file in a web page. IT has also included the APPLET, EMBED, and IMG elements and the feature oof event capturing.

HTML 5 

Refers to the latest version of HTML, which was released in October 2009 . HTML 5 introduces a  Number of new elements and attributes, such as  AUDIO, VIDEO,and content Editable, which allow you to create more interactive Web applications and Website.

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