Book Image

Learning jQuery - Fourth Edition

By : Karl Swedberg, Jonathan Chaffer
Book Image

Learning jQuery - Fourth Edition

By: Karl Swedberg, Jonathan Chaffer

Overview of this book

To build interesting, interactive sites, developers are turning to JavaScript libraries such as jQuery to automate common tasks and simplify complicated ones. Because many web developers have more experience with HTML and CSS than with JavaScript, the library's design lends itself to a quick start for designers with little programming experience. Experienced programmers will also be aided by its conceptual consistency. LearningjQuery - Fourth Edition is revised and updated version of jQuery. You will learn the basics of jQuery for adding interactions and animations to your pages. Even if previous attempts at writing JavaScript have left you baffled, this book will guide you past the pitfalls associated with AJAX, events, effects, and advanced JavaScript language features. Starting with an introduction to jQuery, you will first be shown how to write a functioning jQuery program in just three lines of code. Learn how to add impact to your actions through a set of simple visual effects and to create, copy, reassemble, and embellish content using jQuery's DOM modification methods. The book will take you through many detailed, real-world examples, and even equip you to extend the jQuery library itself with your own plug-ins.
Table of Contents (24 chapters)
Learning jQuery Fourth Edition
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Using global effect properties


The effects module in jQuery includes a handy $.fx object that we can access when we want to change characteristics of our animations across the board. Although some of this object's properties are undocumented and intended for use solely within the library itself, others are provided as tools for globally altering the way our animations run. In the following examples, we'll take a look at a few of the documented properties.

Disabling all effects

We have already discussed a way to halt animations that are currently running, but what if we need to disable all animations entirely? We may, for example, wish to provide animations by default, but disable those animations for low-resource devices such as feature phones in which animations could look choppy, or for users who find animations distracting. To do so, we can simply set the $.fx.off property to true. For our demonstration, we will display a previously hidden button to allow the user to toggle animations on...