Book Image

jQuery UI 1.10: The User Interface Library for jQuery - Fourth Edition

Book Image

jQuery UI 1.10: The User Interface Library for jQuery - Fourth Edition

Overview of this book

jQuery UI, the official UI widget library for jQuery, gives you a solid platform on which to build rich and engaging interfaces quickly, with maximum compatibility, stability, and effort. jQuery UI's ready-made widgets help to reduce the amount of code that you need to write to take a project from conception to completion. jQuery UI 1.10: The User Interface Library for jQuery has been specially revised for Version 1.10 of jQuery UI. It is written to maximize your experience with the library by breaking down each component and walking you through examples that progressively build up your knowledge, taking you from beginner to advanced user in a series of easy-to-follow steps. Throughout the book, you'll learn how to create a basic implementation of each component, then customize and configure the components to tailor them to your application. Each chapter will also show you the custom events fired by the components covered and how these events can be intercepted and acted upon to bring out the best of the library. We will then go on to cover the use of visually engaging, highly configurable user interface widgets. At the end of this book, we'll look at the functioning of all of the UI effects available in the jQuery UI library.
Table of Contents (22 chapters)
jQuery UI 1.10: The User Interface Library for jQuery
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Understanding the droppable callback options


The options that we've looked at so far configure various operational features of the droppable. In addition to these, there are almost as many callback options so that we can define functions that react to different things occurring to the droppable and its accepted drag objects. These options are listed in the following table:

Callback option

Invoked when…

activate

An accepted drag object begins dragging.

deactivate

An accepted drag object stops being dragged.

drop

An accepted drag object is dropped onto a droppable.

out

An accepted drag object is moved out of the bounds (including the tolerance) of the droppable.

over

An accepted drag object is moved within the bounds (including the tolerance) of the droppable.

Let's put together a basic example that makes use of these callback options. We'll add a status bar to our droppable that reports the status of different interactions between the drag object and the droppable. In...