by Dinesh Thakur

jquery is not a language but it is a well written JavaScript code, it is great cross-browser JavaScript library for the JavaScript programmers, It was released in January 2006 at BarCamp NYC by John Resig. According to web static jquery is used Used by over 81% of the 100,000 most visited websites, jquery is the most popular JavaScript library in use today. It helps to Improve the performance of the application. Popular sites using Jquery.

 * ecomputernotes.com

* Amazon.com

* Wordpress.com

* Microsoft.com

* Ask.com

* Msn.com

* Google.com

Why I should use jQuery? 


The best featuring for jQuery is the effects you can accomplish, with less code than what it would take with JavaScript. Most common jQuery effects are

  • Adding animated effects to elements. jQuery lets you easily add effects such as fading in/out, sliding in/out, and expanding/contracting.
  • Making XML (Ajax) requests. These use JavaScript to request additional data from the Web server without having to reload the page.
  • Manipulating the DOM. You can easily add, remove, and reorder content in the Web page using just a couple of lines of code.
  • Creating image slideshows. You can use jQuery effects to build nice animated slideshows and lightboxes.
  • Making drop-down menus. JQuery makes it easy to create multi-level dropdowns with animations.
  • Creating drag-and-drop interfaces. Use jQuery to build a page with elements that can be repositioned or reordered simply by dragging and dropping.
  • Adding power to forms. With jQuery you can easily add complex client-side form validation, create auto-complete Ajax text fields that pull data from a server-side database, and so on.

Developers have also connected this with other coding languages like JSP, ASP, PHP and CGI.

This simplifies the development of web 2.0 applications. You can use jQuery to develop cool web 2.0 applications. jQuery helps the programmers to keep code simple and concise. The jQuery library is designed to keep the things very simple and reusable. You can use jQuery to handle events, perform animation, and add the ajax support into your web applications with ease.

Where to get it? 

For using jQuery JavaScript file, you can be download from jQuery Official website http://docs.jquery.com/Downloading_jQuery jQuery usually comes as a single JavaScript file containing everything comes out of the box with jQuery. It can be included within a web page using the following mark-up:

<script type="text/javascript" src="/jQuery.js"></script>

Ideally this markup is kept in under <head></head> tag of your web page, however you are free to keep anywhere you want.

It is free, open source software Dual-licensed under the MIT License and the GNU General Public License. Microsoft has integrated jQuery officially into its IDE Visual Studio 2010 and jQuery intelligence is available in Visual Studio 2010 now.