顺滑滚动到顶部简单实现

function scrollToTop(){
  const c = document.documentElement.scrollTop || document.body.scrollTop;
  if (c > 0) {
    window.requestAnimationFrame(scrollToTop);
    window.scrollTo(0, c - c / 8);
  }
}

 

来源：oschina

链接：https://my.oschina.net/u/4309973/blog/4258228