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

Draggable event callbacks


In addition to the options that we have already looked at, there are three more that can be used as callback functions to execute code after specific custom events occur.

These events are listed in the following table:

Event

Fired when…

drag

The mouse is moved while dragging

start

Dragging starts

stop

Dragging stops

While defining callback functions to make use of these events, the functions will always receive two arguments automatically: the original event object as the first argument, and a second object containing the following properties:

Property

Usage

helper

A jQuery object representing the helper element.

position

A nested object with properties: top and left, which is the position of the helper element relative to the original drag element.

offset

A nested object with properties: top and left, which is the position of the helper element relative to the page.

Using the callbacks and the two objects that are passed as arguments...