jQuery is a multi-browser JavaScript library designed to simplify the client-side scripting of HTML. It was released in January 2006 at BarCamp NYC by John Resig. It is currently developed by a team of developers led by Dave Methvin. Used by over 65% of the 10,000 most visited websites, jQuery is the most popular JavaScript library in use today.
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 as follows:
<script type="text/javascript" src="jquery.js"></script>
It is also possible to include jQuery directly from content delivery networks.
<script src="
http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>