There's a lot you can do with JavaScript: Images can swap when you move a mouse over them, form elements can influence each other on the fly and much more.. Most Web pages that claim interactivity really mean you can click on hyperlinks to go to new pages.

Some of the best things about JavaScript is that you don't need any expensive software other than a word processor and a Web browser, you can do a great deal with very little programming and you don't need a fancy computer.

First let's clear up any confusion there may be between JavaScript and Java:

Although their names are similar, they are very different. JavaScript is an interpreted language and is nearly always an integral part of the web page source code, if not its in a seperate '.js' file. Java on the other side, is a compiled language with modules that load into your browser from a source external to the web page.

JavaScript can be easier to learn than some other languages because there is lot of examples on the internet.
Just click your browser's "view source" menu and you can see the source code of web pages.

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