jQuery was created in 2006 by John Resig as an alternative to more complicated JavaScript libraries. jQuery enables Web designers and developers to write simpler JavaScript that still enables them to perform advanced JavaScript functions on their Web sites.
jQuery is awesome because no hardcore programming knowledge is required to perform DOM manipulation. jQuery does have some advanced areas that require prior JavaScript knowledge, such as working with the Ajax methods in forms to get and post content, creating custom jQuery plug-ins, and working with mobile Web sites.
Most designers and developers whom I know use, or have used, jQuery at some point in the past years. When I ask why, they usually answer, “Is there anything easier?” Its ease of use attracts so many people to use jQuery; you don’t need a master’s degree in computer science to make a form submit via Ajax.
You may be wondering what sort of things you can do with the jQuery library. The answer is, everything you can do with the native JavaScript API. Here is just a quick overview of the main features of jQuery:
+ Events that include mouse, keyboard, form and user interactions
+ Effects that include show/hide, sliding, fading, and custom animations
+ Animation that allows you to make things move by utilizing CSS and native effects
+ Ajax methods to interface with server-side form processing using XML and JSON
+ Extensibility to create your own plug-ins that extend the jQuery API core
+ DOM manipulation
+ Cascading Style Sheet (CSS) manipulation
+ Utilities that provide browser detection and easier interfaces for common JavaScript functions
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