Web applications are developed using standard web technology, by means of predefined sets of classes, objects, methods and properties, which are provided by programming languages, style sheet languages or markup languages, such as the main markup language HTML.
HTML was created by Berners-Lee when he felt the need to pass between different sets of computer information, without having to log on different computers. The markup language HTML was developed to create web pages, providing the means to describe the structure of graphic and text of the web page. HTML is built having as a base the ISO technology defining markup languages, SGML (Standard Generalized Markup Language).
The basic HTML evolved and new versions were released, such as HTML 3, HTML 4, HTML 5.
There exists notable differences between the initial HTML version and the latter HTML 5 version such that:
- audio and video type are not specified in HTML, while in HTML 5, they are specified;
- vector graphics is not possible in HTML, unless there are used technologies as Flash and Silverlight, while in HTML 5, vector graphics is completely integrated
Unlike HTML, HTML5 offers new semantic, structural and media elements. It also provides new canvas and new form elements.