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 2. The Observer Pattern

In this chapter, we will showcase the Observer Pattern and the convenient way in which we can utilize it in our pages using jQuery. Later on, we will also explain the Delegated Event Observer Pattern variant, which when properly applied to web pages can lead to code simplifications and also lessen the memory consumption that a page requires.

In this chapter, we will:

  • Introduce the Observer Pattern

  • See how the Observer Pattern is used by jQuery

  • Compare the Observer Pattern with using the event attributes

  • Learn how to avoid memory leaks from observers

  • Introduce the Delegated Event Observer Pattern and showcasing its benefits