Introduction to jQuery

Overview

According jQuery.com jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. jQuery is designed to change the way that you write JavaScript.

Acording to Wikipedia, jQuery is a cross-browser JavaScript library designed to simplify the client-side scripting of HTML. It was released in January 2006 at BarCamp NYC by John Resig. Used by over 52% of the 10,000 most visited websites, jQuery is the most popular JavaScript library in use today.

jQuery is free, open source software, dual-licensed under the MIT License or the GNU General Public License, Version 2. jQuery’s syntax is designed to make it easier to navigate a document, select DOM elements, create animations, handle events, and develop Ajax applications. jQuery also provides capabilities for developers to create plug-ins on top of the JavaScript library. This enables developers to create abstractions for low-level interaction and animation, advanced effects and high-level, theme-able widgets. The modular approach to the jQuery library allows the creation of powerful dynamic web pages and web applications.

Etymology

The use of the name jQuery is somewhat misleading, as the library has little to do with queries. Shortly after its release in January 2006, author John Resig stated, “I was, originally, going to use JSelect, but all the domain names were taken already.”

Learner Outcomes

At the completion of this exercise:

* What is jQuery and why was it developed
* Why use jQuery and what are the benefits
* How much does jQuery cost?

Activities

Look over Wikipedia’s JQuery page and respond to the questions listed above
Look over the enclosed “jQuery introduction video and respond to the questions listed above.

Watch the video

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