display when scroll up js code example

Example 1: how to keep scrolling with javascript

function scrolldown() {
  setTimeout(
    function()
    {
      window.scrollTo(0,document.body.scrollHeight);
      scrolldown();
    }, 2000
  )
}

scrolldown()

Example 2: how to scroll to top of a page automatically using javascript

how to scroll to top of a page automatically using javascript