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

YUI Testing


Testing an application is quite tedious; it gets worse because your application has to run in several different browsers with different behaviors. Later on, there comes a new version either of your application, the libraries you use, or of any of the browsers you are expected to support and all the testing has to be redone. In practice, most testing is replaced with very devoted praying.

YUI Test is a very simple library that lets you run tests automatically. You can define tests and test suites, ask it to perform some actions and then check the results. Those actions, besides explicitly calling functions and methods in your application, can be User Interface events. You can ask YUI Test to simulate mouse events such as clicks, double-clicks and mouse down, up, move, over, and out events as well as key ups, downs, and press. Thus, YUI Test is not limited to test functions but the whole behavior of the UI.

It can also test asynchronous functions such as DataSource's .sendRequest...