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

Deferreds and promises

jQuery deferred objects were introduced at a time when there was no consistent way to handle asynchronous behavior in JavaScript code. Promises help us orchestrate asynchronous stuff, such as multiple HTTP requests, file reads, animations, and so on. Promises aren't exclusive to JavaScript, nor are they a new idea. The best way to think about a promise is as a contract that promises to resolve a value eventually.

Now that promises are officially part of JavaScript, jQuery now fully supports promises. That is, jQuery deferred objects behave just like any other promise. This is important, as we'll see in this section, because it means that we can use jQuery deferreds to compose complex asynchronous behavior with other code that return native promises.

Performing Ajax calls on page load

Right now, our dictionary doesn't show any definitions on the initial page load. Instead, it just shows some empty space. Let's change that by showing the "A" entries when the document is...