使用jQuery记录持续时间（以毫秒为单位）？

I am building an AJAX page that when the user clicks a box, it sends an ajax request and returns a result. This is a very simple game. The users repeatedly click the box, and I need to record how much time has elapsed between each click with a precision of milliseconds. So with my request actually, I will be sending the elapsed time since the last request and storing it in a database or session.I am building an AJAX page that when the user c