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What is JQuery?


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Concept of JQuery


jQuery is a framework built using JavaScript capabilities. So while developing your applications using jQuery, you can use all the functions and other capabilities available in JavaScript.jQuery is a cross-browser JavaScript library designed to simplify the client-side scripting of HTML. jQuery is free, open source software, dual-licensed under the MIT License and 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 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 of JQuery


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

Including JQuery Library


The jQuery library is a single JavaScript file, containing all of its common DOM, event, effects, and Ajax functions. It can be included within a web page by linking to a local copy, or to one of the many copies available from public servers (such as Google or Microsoft).

For linking to local copy you need to download it. You can download it from here.

Now for linking it to your page, you can include it.

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

 

Or if you want to link it directly to through the copies available from public servers you can use.

 

 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>

 

Or

 

<script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js"></script>

 

For more details about JQuery visit: http://jquery.com/


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