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What You Should Already Know

Before you start studying jQuery, you should have a basic knowledge of :

• HTML
• CSS
• JavaScript

What is jQuery?

jQuery is a library of JavaScript Functions.
jQuery is a lightweight "write less, do more" JavaScript library.
The jQuery library contains the following features:

• HTML element selections
• HTML element manipulation
• CSS manipulation
• HTML event functions
• JavaScript Effects and animations
• HTML DOM traversal and modification
• AJAX
• Utilities

Who uses jQuery?

• Microsoft, Google, Mozilla, IBM, Amazon, HP, Intel.
• Ruby on Rails, Wordpress, Django, Drupal, CakePHP, ASP.NET MVC.
• Everyone can agree that jQuery is awesome.

jQuery is pretty popular:

• 26.95% of all sites use jQuery (see Builtwith.com).
• Google Trends

Easy to learn and master :

• Uses CSS to layer functionality.
• Easy to separate behavior.
• Quick, terse, syntax.