If you're looking to test your HTML knowledge (and who isn't?), take a trip to the justsayhi website. How many elements can you name in five minutes?
As an aside, the JavaScript built into the test is simple but perfect -- an idea carried out well.
One event that's always been lacking within the document is a signal for when the user is looking at a given tab, or another tab. When does the user switch off our site to look at something else? When do they come back?
As much as developers now loathe Flash, we're still playing a bit of catch up to natively duplicate the animation capabilities that Adobe's old technology provided us. Of course we have canvas, an awesome technology, one which I highlighted 9 mind-blowing demos. Another technology available...
Last July I wrote an epic dominant unbelievable fantastic outstanding awesome NetTuts post called Create a Twitter-Like "Load More" Widget Using CSS, HTML, JSON, and jQuery or MooTools where I used a MooTools/AJAX/JSON system for loading additional items when the user clicks a "Load...
Soh Tanaka release a great script back in May titled Simple Page Peel Effect with jQuery & CSS. The idea is that you place a "peel" image on the upper-right side of an element which, when hovered, "peels" open and peels close.
I make only 25 (the shame is over me :-D). I don’t know or remenber the existence of BDO, COLGROUP, ISINDEX, KBD, OPTGROUP, Q, SAMP, TT and VAR. The others i have a simple mind blank.