JavaScript provides action for a page. It is a seq. of statements to be performed by the browser. You can create cookies, perform visual effects, validate data, and many more other actions. JavaScript first appeared in 1995 originated by Netscape navigator and was created to eliminate slow download times.
JavaScript is made up of three parts:
- ECMA- which provides the core function. Its a base for more robust scripting
- DOM-Document Object Model. Page made with an heirarchy of nodes. Provides methods and interfaces for working with content.
- BOM-Browser Object Model is the least standardized and allows a browser to perform many different things.
Sever-Side is all the processing power used by a web site. Some examples are CGI,ASP, or PHP. Where as Client-Side uses less bandwidth and runs in the browser. Its like the horsepower of the users computer.
WEB 2.0 is the transition from static html pages to a more dynamic web pages that are organized and serving the applications better.
Ajax is asynchronous JavaScript and was made popular by Google in 2005. It is a new way to use existing standards and was made to build highly interactive and responsive web applications.
RIA (rich internet application) is used to combine the desktop with the web.
Make sure you know the difference between server-side and client-side scripting and can explain them.