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What HTML APIs are available for touch screen devices (e.g. tablet PCs)? I notice that GMail’s iPad interface (and other mobile interfaces) doesn’t scroll down in a normal web browser (pretending to be an iPad via a user-agent hack). How can one access this API on a PC?
I have a school full of tablet PCs that aren’t wonderful in tablet mode due to lack of application support, but there looks to be an increasing number of web-based apps that will fill this gap.
In most cases, the webapps are using touch-based javascript events (touch, touchstart, touchend) which (for obvious reasons) are not implemented on Desktop browsers.
Check out PPK’s compatibility table for details: http://quirksmode.org/mobile/tableTouch.html.
He also has a demo which shows the touch events in use: http://quirksmode.org/m/tests/scrollayer.html. There’s a link on that page for a “variant” that works on desktop browsers. That’s the one you need.