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Introduction

Introduction

Welcome to Pure JavaScript! This book has been written by JavaScript programmers for JavaScript programmers. It is your complete reference for developing, testing, and deploying JavaScript solutions in pages and on Web sites.

Pure JavaScript was not written to teach a person how to program, but rather to provide the details and semantics of the JavaScript language so programmers can exploit it as they see fit. JavaScript has evolved over the past few years and is reaching into new areas, many of which are addressed in this book. The book itself is broken into three main parts, including references on concepts, techniques, and syntax. Each represents a valuable step in learning and using a language.

Part I of the book, "A Programmer's Overview of JavaScript," acts as a bridge for programmers who are currently programming in another language. Many times programmers don't want to buy a beginner's book on JavaScript because they do not need to know how to program, but rather they need specifics about the language. Once they know these specifics and semantics, the syntax is easy. This section provides the necessary information for such a programming migration.

Part II, "Programming in JavaScript," shows you the advantages and strengths of JavaScript. It discusses some of the pros and cons of using the language and the environments in which it is interpreted. Programmers will learn how to use JavaScript in real world instances. They will be introduced to some of the browser issues as well as how to process Web information. Programmers will even be shown how to access Java functions within an applet. After you have completed this section, you will be ready to move forward and start programming. This leads you into the last section of the book.

Part III, "JavaScript Reference by Object," makes up the majority of the book and contains some of the most useful information for current JavaScript programmers—reference material organized by object. Each property, method, and event is discussed in detail under its associated object; and you'll see an example of its use. Each entry also shows the appropriate language version and browser or server support. The section itself is broken into four chapters. The first chapter covers JavaScript standard objects and syntax. The next chapter covers client-side and browser scripting objects. The third chapter covers server-side JavaScript objects (for Netscape Enterprise servers). Finally, we cover JavaScript geared for Microsoft Active Scripting interface.

In addition, several appendixes have been included. Located here are quick reference tables to find browser and version support of the syntax. There is also an appendix, "JavaScript Resources," that includes JavaScript Web resources for additional documentation and help with programming issues that you may come across.

And that covers it! For new JavaScript programmers, welcome to the world of JavaScript. For those of you wanting a good, solid reference for your programming, we hope you find this book to be the most resourceful and current title on the shelves today!

R. Allen Wyke

Jason Gilliam

Charlton Ting

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