Continually scroll to the bottom of a page

continuallyScroll.js

var scrolling

function scrollToBottom() {
  if (scrolling)
    requestAnimationFrame(scrollToBottom)
    
  window.scrollTo(0, document.body.offsetHeight)
}

function startScrolling() {
  scrolling = true
  scrollToBottom()
}

function stopScrolling() {
  scrolling = false
}