JQuery

JQuery

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. jQuery is a cross-browser JavaScript library designed to simplify the client-side scripting of HTML.

jQuery also provides capabilities for developers to create plugins on top of the JavaScript library. Using these facilities, developers are able to create abstractions for low-level interaction and animation, advanced effects and high-level, theme-able widgets. This contributes to the creation of powerful and dynamic web pages.

Features:

jQuery contains the following features:

  • DOM element selections using the cross-browser open source selector engine Sizzle, a spin-off out of the jQuery project
  • DOM traversal and modification (including support for CSS 1-3)
  • Events
  • CSS manipulation
  • Effects and animations
  • Ajax
  • Extensibility through plug-ins
  • Utilities – such as browser version and the each function.
  • Cross-browser support
jQuery plug-ins:

Because of jQuery’s architecture, other developers can use its constructs to create plug-in code to extend its functionality. Currently there are thousands of jQuery plug-ins available on the web that cover a wide range of functionality such as Ajax helpers, webservices, datagrids, dynamic lists, XML and XSLT tools, drag and drop, events, cookie handling, modal windows, even a jQuery-based Commodore 64 emulator.

An important source of jQuery plug-ins is the Plugins sub-domain of the jQuery Project website. There are alternative plug-in search engines that take more specialist approaches, such as only listing plug-ins that meet certain criteria (e.g. those that have a public code repository). The tutorials page on the jQuery site has a list of links to jQuery plug-in tutorials under the “Plugin development” section.