Detect whether element scroll to the end

main.js

function detectWhetherElementScrollToEnd(element) {
  const { scrollLeft, scrollTop, offsetWidth, offsetHeight, scrollWidth, scrollHeight } = element;
  if (scrollTop === 0) {
    return 'scroll to top';
  }
  if (scrollTop + offsetHeight >= scrollHeight) {
    return 'scroll to end';
  }
  if (scrollLeft === 0) {
    return 'scroll to left';
  }
  if (scrollLeft + offsetWidth >= scrollWidth) {
    return 'scroll to right';
  }
}