jQuery is a JavaScript library that simplifies HTML document traversal, event handling, animating, and Ajax interactions. It works across browsers like Internet Explorer 6, Firefox 2.0, Safari 2.0 and Opera 9.0. jQuery streamlines development by providing methods that reduce the need for verbose JavaScript code. Popular websites use jQuery to enhance the user experience through dynamic and interactive features.

1. jQuery Group 5

4. Who are Using jQuery

5. First download jquery-1.2.6.min

6. Starting code in jQuery

7. Using the Ready Event

8. Output of slide 7

9. Special Effects

10. Chainability

11. Output of slide 10

12. Some methods