Book Image

YUI 2.8: Learning the Library

Book Image

YUI 2.8: Learning the Library

Overview of this book

The YUI Library is a set of utilities and controls written in JavaScript for building Rich Internet Applications, across all major browsers and independently of any server technology. There's a lot of functionality baked into YUI, but getting to and understanding that functionality is not for the faint of heart. This book gives you a clear picture of YUI through a step-by-step approach, packed with lots of examples.YUI 2.8: Learning the Library covers all released (non-beta) components of the YUI 2.8 Library in detail with plenty of working examples, looking at the classes that make up each component and the properties and methods that can be used. It includes a series of practical examples to reinforce how each component should/can be used, showing its use to create complex, fully featured, cross-browser, Web 2.0 user interfaces. It has been updated from its first edition with the addition of several chapters covering several new controls and enriched with lots of experience of using them.You will learn to create a number of powerful JavaScript controls that can be used straightaway in your own applications. Besides giving you a deep understanding of the YUI library, this book will expand your knowledge of object-oriented JavaScript programming, as well as strengthen your understanding of the DOM and CSS. The final chapter describes many of the tools available to assist you the developer in debugging, maintaining, and ensuring the best quality in your code. In this new edition, all the examples have been updated to use the most recent coding practices and style and new ones added to cover newer components. Since the basic documentation for the library is available online, the focus is on providing insight and experience.The authors take the reader from beginner to advanced-level YUI usage and understanding.
Table of Contents (18 chapters)
YUI 2.8 Learning the Library
Credits
About the Authors
About the Reviewers
Preface

Implementing drag-and-drop


To highlight some of the basic features and considerations of drag-and-drop we'll create a shopping basket application, which can be used by visitors to drag products they want to buy into the basket.

The page that we'll end up with by the end of this example will look like this:

We'll need to include the ever-present yahoo-dom-event.js and reset-fonts-grids.css, to which we'll add dragdrop-min.js.

We'll use the doc3 100% fluid page layout and the t6 template to give us a convenient right-hand side bar in the main body of the page into which we can place our shopping basket. A further CSS file contains all the decoration for this example.

Let's add the code for the product catalog first. Normally, this kind of data would come out of a database dynamically when the page gets loaded, but in this example, the database is hard-coded into the page as an array, as if it had just been JSON-decoded from a remote request:

var products = [
{
name:'Abit KT7',
image:'prod1.jpg...