All is Timed

1. Using setInterval, create a page that would display the number of seconds the user spent on it. It will start by displaying 0, after 1 second it will replace 0 with 1, after another second it will show 2 and so on.

2. Modify the counter so that it never resets: each time the user visits the page, the initial number of seconds he sees is the number of seconds he has already spent on the page. The timer then increases the number by 1 every second, just as it did before.