Book Descrition
JavaScript is a scripting language that enables you to enhance static
web applications by providing dynamic, personalized, and interactive
content. This improves the experience of visitors to your site and makes
it more likely that they will visit again. You must have seen the
flashy drop-down menus, moving text, and changing content that are now
widespread on web sites—they are enabled through JavaScript. Supported
by all the major browsers, JavaScript is the language of choice on the
Web. It can even be used outside web applications—to automate
administrative tasks, for example.
This book aims to teach you all you
need to know to start experimenting with JavaScript: what it is, how it
works, and what you can do with it. Starting from the basic syntax,
you'll move on to learn how to create powerful web applications. Don't
worry if you've never programmed before—this book will teach you all you
need to know, step by step. You'll find that JavaScript can be a great
introduction to the world of programming: with the knowledge and
understanding that you'll gain from this book, you'll be able to move on
to learn newer and more advanced technologies in the world of
computing.
In order to get the most out of this book, you'll need
to have an understanding of HTML and how to create a static web page.
You don't need to have any programming experience.
This book will
also suit you if you have some programming experience already, and would
like to turn your hand to web programming. You will know a fair amount
about computing concepts, but maybe not as much about web technologies.
Alternatively,
you may have a design background and know relatively little about the
Web and computing concepts. For you, JavaScript will be a cheap and
relatively easy introduction to the world of programming and web
application development.
Whoever you are, we hope that this book lives up to your expectations.
You'll
begin by looking at exactly what JavaScript is, and taking your first
steps with the underlying language and syntax. You'll learn all the
fundamental programming concepts, including data and data types, and
structuring your code to make decisions in your programs or to loop over
the same piece of code many times.
Once you're comfortable with
the basics, you'll move on to one of the key ideas in JavaScript—the
object. You'll learn how to take advantage of the objects that are
native to the JavaScript language, such as dates and strings, and find
out how these objects enable you to manage complex data and simplify
your programs. Next, you'll see how you can use JavaScript to manipulate
objects made available to you in the browser, such as forms, windows,
and other controls. Using this knowledge, you can start to create truly
professional-looking applications that enable you to interact with the
user.
Long pieces of code are very hard to get right every
time—even for the experienced programmer—and JavaScript code is no
exception. You look at common syntax and logical errors, how you can
spot them, and how to use the Microsoft Script Debugger to aid you with
this task. Also, you need to examine how to handle the errors that slip
through the net, and ensure that these do not detract from the
experience of the end user of your application.
From here, you'll
move on to more advanced topics, such as using cookies and jazzing up
your web pages with dynamic HTML and XML. Finally, you'll be looking at a
relatively new and exciting technology, remote scripting. This allows
your JavaScript in a HTML page to communicate directly with a server,
and useful for, say, looking up information on a database sitting on
your server. If you have the Google toolbar you'll have seen something
like this in action already. When you type a search word in the Google
toolbar, it comes up with suggestions, which it gets via the Google
search database.
All the new concepts introduced in this book will
be illustrated with practical examples, which enable you to experiment
with JavaScript and build on the theory that you have just learned. The
appendix provides solutions to the exercises included at the end of most
chapters throughout the book.
During the first half of the book,
you'll also be building up a more complex sample application—an online
trivia quiz—which will show you how JavaScript is used in action in a
real-world situation.
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Beginning JavaScript, 3rd Edition | Publisher: Wrox; 3 edition (May 21, 2007) | Author: Jeremy McPeak, Paul Wilton | 792 pages | PDF | Language: English
info: http://www.amazon.com/Beginning-JavaScript-3rd-Programmer/dp/0470051515
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