Doing AJAX

Asynchronous request methods:
- FRAME
- IFRAME
- Element's src/href attribute (GET only)
- XMLHttpRequest object AKA Microsoft.XMLHTTP

Format of data traveling from server:
- JSON (stands for JavaScript Object Notation)

Format of data traveling from client:
- Separated values
- Fixed length
- XML

Google Web Toolkit

http://code.google.com/webtoolkit/

AJAX in all it's beauty! Take a look at Kitchen Sink demo: http://code.google.com/webtoolkit/documentation/examples/kitchensink/demo.html