First of all, if you don’t know it yet:
###What is the WHATWG? The WHATWG is a growing community of people interested in evolving the Web. It focuses primarily on the development of HTML and APIs needed for Web applications.
Now, how did I end up getting involved in this? If you’re a Drupal user, you might have heard of my Hierarchical Select module. Well, for version 3 of this module, I decided to work on this issue: try to eliminate as much queries to the server as possible, by taking advantage of HTML 5’s client-side database storage.
It’s currently only supported by Safari >=3.1 (or WebKit nightlies as of October 17th) and Firefox 3 (I can’t seem to find confirmation for Firefox though).