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

Chapter 8. Buttons and Trees

In this chapter we are going to look at two very useful controls provided by the library: the Button and TreeView controls. Both provide the rich and engaging functionality expected of web-based interface controls, and both are highly configurable and customizable.

The standard buttons used in practically every web form ever created are an intrinsic part of HTML. These buttons are so ingrained in the average surfer's psyche that they are used without a moment's thought. But don't you ever want to do more than just push them? No? Well the good people at Yahoo! think that you should, and so they've created a new breed of button—the YUI Button Control.

The TreeView control allows us to easily create a variety of hierarchical tree structures in almost no time at all. These are traditionally something that you would expect to find in a desktop application (such as Windows Explorer) rather than a web application, but with the distinction between the desktop and the Web...