JavaScript
JavaScript is a concise, object-based scripting language for developing client and server Internet applications. The code can be embedded into standard HTML pages to create interactive documents.
Use of JavaScript can enhance the dynamics and interactive features of a web page. It can direct responses from of variety of events, objects and actions (such as user's mouse clicks, start-ups and exits of pages and browsers).
Other uses of JavaScript include: performing calculations, checking forms, writing interactive games, adding special effects, customising graphics selections, and creating security passwords.