Smooth-scrolls to the top of the page.
Get distance from top using document.documentElement.scrollTop
or document.body.scrollTop
.
Scroll by a fraction of the distance from the top. Use window.requestAnimationFrame()
to animate the scrolling.
代码片段
const scrollToTop = () => {
const c = document.documentElement.scrollTop || document.body.scrollTop;
if (c > 0) {
window.requestAnimationFrame(scrollToTop);
window.scrollTo(0, c - c / 8);
}
};
使用样例
scrollToTop();