How to calculate kinetic scroll without a sea of ​​timeouts?

Question

JavaScript

There is parallax, and if the touch-scroll itself is more or less processed by a set of touchend, touchstart, touchcancel, touchmove events, then the situation “touched with a finger, quickly pulled and immediately released, and the screen scrolled by inertia” is not processed correctly for me.
From clumsy methods, of course, the interval on touchstart comes to mind, but it seems to me an ugly solution
. Maybe I'm digging somewhere in the wrong place?

Answer 1

Here is a finished example . Should help.