Explain briefly the following (i) HTML (ii) XML (iii) DHTML

Q. Explain briefly the following:

(i) HTML

(ii) XML

(iii) DHTML

Answer =

(i) HTML:-

Everything that you see on the Web is documents written in a special language called HTML or Hypertext Markup Language. This language tells the browsers how to display text, pictures and links on the screen.

• HTML is a document-layout and hyperlink-specification language i.e., a language used to design the layout of a document and to specify the hyperlinks.
• HTML is not a word processing tool; it is not a desktop publishing solution or even a programming language. It is just a page-layout and hyperlink specification language.

(ii) XML:-

XML (Extensible Markup Language) is a markup language for documents containing structured information.

Structured information contains both content (words, pictures, etc.) and some indication of what role that content plays (for example, content in a section heading has a different meaning from content in a footnote, which means something different than content in a figure caption or content in a database table, etc.). Almost all documents have some structure.

A markup language is a mechanism to identify structures in a document. The XML specification defines a standard way to add markup to documents.

(iii) DHTML:-

"Dynamic HTML" is typically used to describe the combination of HTML, style sheets and scripts that allows documents to be animated. Dynamic HTML allows a web page to change after it's loaded into the browser - there doesn't have to be any communication with the web server for an update. You can think of it as 'animated' HTML. For example, a piece of text can change from one size or color to another, or a graphic can move from one location to another, in response to some kind of user action, such as clicking a button.