Book Image

Learning jQuery 3 - Fifth Edition

By : Jonathan Chaffer, Karl Swedberg
Book Image

Learning jQuery 3 - Fifth Edition

By: Jonathan Chaffer, Karl Swedberg

Overview of this book

If you are a web developer and want to create web applications that look good, are efficient, have rich user interfaces, and integrate seamlessly with any backend using AJAX, then this book is the ideal match for you. We’ll show you how you can integrate jQuery 3.0 into your web pages, avoid complex JavaScript code, create brilliant animation effects for your web applications, and create a flawless app. We start by configuring and customising the jQuery environment, and getting hands-on with DOM manipulation. Next, we’ll explore event handling advanced animations, creating optimised user interfaces, and building useful third-party plugins. Also, we'll learn how to integrate jQuery with your favourite back-end framework. Moving on, we’ll learn how the ECMAScript 6 features affect your web development process with jQuery. we’ll discover how to use the newly introduced JavaScript promises and the new animation API in jQuery 3.0 in great detail, along with sample code and examples. By the end of the book, you will be able to successfully create a fully featured and efficient single page web application and leverage all the new features of jQuery 3.0 effectively.
Table of Contents (23 chapters)
Title Page
About the Authors
About the Reviewer
Customer Feedback


I started using jQuery in 2007, and I'm still using it today. Granted, a lot has happened between now and then: new JavaScript libraries, more consistency across browsers, and enhancements to JavaScript itself. The one thing that hasn't changed in 10 years is the expressiveness and conciseness of jQuery. Even with all the new hotness out there today, jQuery remains the go-to tool of choice for getting work done quickly, and efficiently.

This book has a long history behind it, and it remains intact in its fifth edition. It has been a successful book because it is straight to the point and easy to follow. I've done my best to preserve what has worked so well for this book. My goal is to modernize learning jQuery for the current web-development landscape.

What this book covers

Chapter 1, Getting Started, gets your feet wet with the jQuery JavaScript library. The chapter begins with a description of jQuery and what it can do for you. It then walks you through downloading and setting up the library as well as writing your first script.

Chapter 2, Selecting Elements, teaches you how to use jQuery's selector expressions and DOM-traversal methods to find elements on the page, wherever they may be. You'll use jQuery to apply styling to a diverse set of page elements, sometimes in a way that pure CSS cannot.

Chapter 3Handling Events, walks you through jQuery's event-handling mechanism to fire off behaviors when browser events occur. You'll see how jQuery makes it easy to attach events to elements unobtrusively, even before the page finishes loading. Also, you'll get an overview of deeper topics, such as event bubbling, delegation, and namespacing.

Chapter 4, Styling and Animating, introduces you to jQuery's animation techniques and how to hide, show, and move page elements with effects that are both useful and pleasing to the eye.

Chapter 5, Manipulating the DOM, teaches you how to change your page on command. This chapter will also teach you how to alter the very structure of an HTML document as well as adding to its content on the fly.

Chapter 6, Sending Data with Ajax, walks you through many ways in which jQuery makes it easy to access server-side functionality without resorting to clunky page refreshes. With the basic components of the library well in hand, you will be ready to explore how the library can expand to fit your needs.

Chapter 7, Using Plugins, shows you how to find, install, and use plugins, including the powerful jQuery UI and jQuery Mobile plugin libraries.

Chapter 8, Developing Plugins, teaches you how to take advantage of jQuery's impressive extension capabilities to develop your own plugins from the ground up. You'll create your own utility functions, add jQuery object methods, and discover the jQuery UI widget factory. Next, you'll take a second tour through jQuery's building blocks, learning more advanced techniques.

Chapter 9, Advanced Selectors and Traversing, refines your knowledge of selectors and traversals, gaining the ability to optimize selectors for performance, manipulating the DOM element stack, and writing plugins that expand selecting and traversing capabilities.

Chapter 10, Advanced Events, dives further into techniques such as delegation and throttling that can greatly improve event-handling performance. You'll also create custom and special events that add even more capabilities to the jQuery library.

Chapter 11, Advanced Effects, shows you how to fine-tune the visual effects of jQuery that can be provided by crafting custom-easing functions and reacting to each step of an animation. You'll gain the ability to manipulate animations as they occur and schedule actions with custom queuing.

Chapter 12, Advanced DOM Manipulation, provides you with more practice modifying the DOM with techniques such as attaching arbitrary data to elements. You'll also learn how to extend the way jQuery processes CSS properties on elements.

Chapter 13, Advanced Ajax, helps you achieve a greater understanding of Ajax transactions, including the jQuery deferred object system for handling data that may become available at a later time.

Appendix A, Testing JavaScript with QUnit, teaches you about the QUnit library, which is used for the unit testing JavaScript programs. This library will be a great addition to your toolkit for developing and maintaining highly sophisticated web applications.

Appendix B, Quick Reference, provides a glimpse of the entire jQuery library, including every one of its methods and selector expressions. Its easy-to-scan format is perfect for those moments when you know what you want to do, but you're just unsure about the right method name or selector.

What you need for this book

In order to run the example code demonstrated in this book, you need a modern web browser, such as Google Chrome, Mozilla Firefox, Apple Safari, or Microsoft Edge.

To experiment with the examples and to work on the chapter-ending exercises, you will also need the following:

  • A basic text editor
  • Web development tools for the browser, such as Chrome Developer Tools or Firebug (as described in the Using development tools section of Chapter 1, Getting Started)
  • The full code package for each chapter, which includes a copy of the jQuery library (seen in the Downloading the example code section)

Additionally, to run some of the Ajax examples in Chapter 6, Sending Data with Ajax and beyond, you will need Node.js.

Who this book is for

This book is ideal for client-side JavaScript developers. You do not need to have any previous experience with jQuery, although basic JavaScript programming knowledge is necessary.


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