Light weight and client side Web Applications with Animated & attractive look & Design.

Validation, User intractive , animation, Ajax call, design pattern and lot more

To get this answer you should have realize the scenario.Go to following link-1) http://ejohn.org/apps/workshop/adv-talk/index2.html#25 2) http://www.ibm.com/developerworks/library/wa-jquerywebapps/

jQuery uses features like Sliding, File uploading and accordian in web applications.