What is jQuery : JQuery is a JavaScript library which is small, quick, with tons of features that makes things such as animation, event handling and manipulation in web browser easy to use and handle. 1-jQuery is a fast and concise JavaScript Library created by John Resig in 2006 with a nice motto - 2-Write less, do more. 3-jQuery simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. Following feature of jQuery : 1-DOM manipulation − The jQuery made it easy to select DOM elements, traverse them and modifying their content by using cross-browser open source selector engine called Sizzle. 2-Event Handling : The jQuery offers an elegant way to capture a wide variety of events,such as click,over event, 3-Ajax Support : jQuery support ajax technology, 4-Lightweight :he jQuery is very lightweight library - about 19KB in size ( Minified and gzipped ). 5...