remembers and sets the scrolling position of the current page after reload

remscroll.js

var href = 'remscroll.js:' + window.location.href;

window.addEventListener('load', () => {
  let scrollPos = localStorage.getItem(href);
  if(scrollPos) {
    document.scrollingElement.scrollTop = Number(scrollPos);
  }
});

document.addEventListener('scroll', () => {
  if(!href.includes('#')) {
    localStorage.setItem(href, document.scrollingElement.scrollTop);
  }
});