Book Image

jQuery Design Patterns

By : Thodoris Greasidis
Book Image

jQuery Design Patterns

By: Thodoris Greasidis

Overview of this book

jQuery is a feature-rich JavaScript library that makes HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a variety of browsers. With a combination of versatility and extensibility, jQuery has changed the way that millions of people write JavaScript. jQuery solves the problems of DOM manipulation, event detection, AJAX calls, element selection and document queries, element attribute and data management, as well as object management utilities. This book addresses these problems and shows you how to make the best of jQuery through the various design patterns available. The book starts off with a refresher to jQuery and will then take you through the different design patterns such as facade, observer, publisher/subscriber, and so on. We will also go into client-side templating techniques and libraries, as well as some plugin development patterns. Finally, we will look into some best practices that you can use to make the best of jQuery.
Table of Contents (18 chapters)
jQuery Design Patterns
About the Author
About the Reviewer

Chapter 7. Asynchronous Control Flow Patterns

This chapter is dedicated to development patterns that are used to ease the programming of asynchronous and concurrent procedures.

At first, we will have a refresher on how Callbacks are used in JavaScript programming and how they are an integral part of web development. We will then proceed and identify their benefits and limitations when used in large and complex implementations.

Right after this, we will be introduced to the concept of Promises. We will learn how jQuery's Deferred and Promise APIs work and how they differ from ES6 Promises. We will see where and how they are used internally by jQuery to simplify its implementation and lead to more readable code. We will analyze their benefits, classify the best matching use cases, and compare them with the classic Callback Pattern.

By the end of this chapter, we will be able to use jQuery Deferred and Promises to efficiently orchestrate the execution of asynchronous procedures that run either...