Introduction to JavaScript

What is JavaScript?

Html is providing static web pages but with the developments in internet & World Wide Web the interactive communication became a necessity. The World Wide Web is a heap of pages having information if form of text, graphics, pictures, sounds etc. Every page is linked to another page on web and the linked page can have links to other pages.

Browser is a program responsible to understand and interpret the language and perform according to the instructions written in HTML file. Internet Explorer, Netscape Navigator, Fire Fox etc. are such programs.

HTML, JavaScript is integrated with browser & this integration enables the programmer to add dynamic interaction to the text, picture, information on the web page. JavaScript is case sensitive language i.e.; state is different from State or STATE (these are three different words for JavaScript). JavaScript is capable of sensing the events like mousing clicking, mousing moving etc. JavaScript files are directly executed when user double clicks on them or opens them in Browser.