on scroll function in javascript code example

Example 1: javascript scrollintoview

var element = document.getElementById("box");

element.scrollIntoView();
element.scrollIntoView(false);
element.scrollIntoView({block: "end"});
element.scrollIntoView({behavior: "smooth", block: "end", inline: "nearest"});

Example 2: jquery on scroll

Syntax
Trigger the scroll event for the selected elements:
$(selector).scroll()

Attach a function to the scroll event:
$(selector).scroll(function)