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
About the Authors
About the Reviewers


To complete these exercises, you will need the index.html file for this chapter, as well as the finished JavaScript code as found in complete.js. These files can be downloaded from the Packt Publishing website at

The following challenge exercise may require the use of the official jQuery documentation at

  1. When the user clicks on a photo, add or remove the selected class on the photo <div>. Make sure this behavior works even for photos added later using the Next Page link.

  2. Add a new custom event called pageLoaded that fires when a new set of images has been added to the page.

  3. Using the nextPage and pageLoaded handlers, show a Loading message at the bottom of the page only while a new page is being loaded.

  4. Bind a mousemove handler to photos that logs the current mouse position (using console.log()).

  5. Revise this handler to perform the logging no more than five times a second.

  6. Challenge: Create a new special event named tripleclick...