What's the difference between “onwheel” and “onscroll” events?

Question

When I tried to change the default scroll bar property, I found that it\'s not convenient by rewriting callback function for scroll() or onscroll e

Answer 1

The onwheel event triggers on scroll AND on zoom, as you move the mouse wheel, while the onscroll event only occurs when an element's scrollbar is being scrolled (i believe that includes touch scrolling as well).