Using JavaScript and AJAX/JSON in Modules | Learning Drupal 6 Module Development

Introducing jQuery

jQuery is one of the most innovative JavaScript libraries to come around. Using an Object-Oriented design pattern called the Fluent Interface, jQuery makes it possible to chain a sequence of function calls together to construct elaborate queries.

What does jQuery query? Usually, it is used to query the DOM tree.

Note

A DOM (Document Object Model) tree is a data structure that defines the structure of a document—usually an HTML or XML document. The document is presented as a tree structure, where the first element is the root. The API is standardized (see http://w3.org).

DOM is known for its complex object model. jQuery provides an API that is more compact and easier to use.

However, it can be used for more than just querying. It has a suite of AJAX tools, tools for event handling, glitzy effects, and some very useful utility functions. We will use a little bit of everything in this chapter.

Note

For more information on jQuery, see http://jquery.com. A fantastic book entitled...

Tech Concepts

Programming languages

Tech Tools

Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.

Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.

50+ new titles added per month and exclusive early access to books as they are being written.

Learning Drupal 6 Module Development

Learning Drupal 6 Module Development

Overview of this book

I﻿ntroducing jQuery

Note

Note

Confirmation

Buy this book with your credits?

Submit Your Feedback

Create a Free Account To Continue Reading

Sign in to activate your 7-day free access

Introducing jQuery