determine where scroll position in javascript code example

Example 1: javascript get scroll position

function getYPosition(){
  var top  = window.pageYOffset || document.documentElement.scrollTop
  return top;
}

Example 2: checking scroll position with js

let scrollLeft = window.pageXOffset || document.documentElement.scrollLeft,
scrollTop = window.pageYOffset || document.documentElement.scrollTop;Code language: JavaScript (javascript)