I run this web site http://www.theloancalculator.org which is made of a single unique page.
However many actions are possible within the page, but all are pure javascript actions not leading to any other page.
What is the right approach to let Google Analytics properly evaluate the average visit duration ?
Google analytics currently displays a very low average visit duration which I believe to be wrong.
I was thinking about adding events, but I am not sure if that is the right approach, since I am going to be flooded with custom events if I trace each possible javascript action.