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chiyan-lin / code-snippet

the record of something snippety
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scrollToTop #21

Open chiyan-lin opened 3 years ago

chiyan-lin commented 3 years ago 

// 位于长页面的底部，并且想快速向上滚动至顶部

const scrollToTop = () => {
  const t = document.documentElement.scrollTop || document.body.scrollTop
  if (t > 0) {
    window.requestAnimationFrame(scrollToTop)
    window.scrollTo(0, t — t / 8)
  }
}