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Part IV: Multimedia and Interactivity > Introduction to JavaScript

Chapter 22. Introduction to JavaScript

JavaScript is a client-side scripting language that adds interactivity and conditional behavior to web pages. With JavaScript, you can do such things as display additional information about links, create mouse rollover effects, change the contents of pages based on certain conditions, randomly display content on a page, load content in new browser windows and frames, and (with some help from CSS) move elements around the page.

This chapter is derived from material and code by Nick Heinle, author of Designing with JavaScript, (O'Reilly & Associates, 1997). For more tutorials on writing JavaScript, see Nick's pages at http://webcoder.com. For a more advanced reference, see JavaScript: The Definitive Guide, Third Edition, by David Flanagan (O'Reilly & Associates, 1998). Also note that for simple functionality, you may not need to write your own JavaScript at all; software like Macromedia's Dreamweaver can do your coding for you.


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