Javascript - Track mouse position

Question

I am hoping to track the position of the mouse cursor, periodically every t mseconds. So essentially, when a page loads - this tracker should start and for (say) every 100 m

Answer 1

Irrespective of the browser, below lines worked for me to fetch correct mouse position.

event.clientX - event.currentTarget.getBoundingClientRect().left event.clientY - event.currentTarget.getBoundingClientRect().top