How JavaScript scrolls to the top

Editor to share with you how JavaScript scrolls to the top, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's learn about it!

Scroll to top / / use document.documentElement.scrollTop or document.body.scrollTop to get the distance to the top, from the top

/ / scroll a small part of the distance. Use window.requestAnimationFrame () to scroll.

/ / @ example

/ / scrollToTop ()

Function scrollToTop () {

Var c = document.documentElement.scrollTop | | document.body.scrollTop

If (c > 0) {

Window.requestAnimationFrame (scrollToTop)

Window.scrollTo (0, c-c / 8)

}

} these are all the contents of the article "how to scroll to the top of JavaScript". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!