I\'ve got the feeling that javascript itself is pretty fast in an andorid webview, but there is a long delay between touching an element and the onclick event beeing fired.
I guess I've found the answer...
If you take a look at jQuery mobile, you'll find a tap event. This works instantly - exactly as I need it.
Looking deeper into the source, I've found that the tap event uses a mousedown ....
This is a known 'issue' related to 300ms due to user tapping/zooming at display:
http://updates.html5rocks.com/2013/12/300ms-tap-delay-gone-away
In the near future, this seems to be solved, in static sized layouts, adding information at header. But the actual webkit webview version does not have/consider this option.
In my case, the solution was use Tappy lib:
https://github.com/filamentgroup/tappy
Just import it, and bind to each element that has an click event, and you will see the difference.
Just one more point: I adjusted the timer to 100000ms (default:1000ms) to avoid event repetition in some specific cases.