区分在jquery中向上/向下滚动? [英] Differentiate between scroll up/down in jquery?

问题描述

我找到了一些很棒的方法来检查使用jquery的滚动条，但是我想知道您是否可以区分用户是否向上或向下滚动?

I have found some great ways to check for where the scroll bar is using jquery, but I was wondering if you can differentiate whether or not the user scrolled up or down?

推荐答案

检查最后一个状态.像这样:

Check for the last state. Something like this:

保留一个变量，例如last_scroll_position，滚动显示时，如果last_scroll_position - current_position > 0，则用户向上滚动，如果小于0，则向下滚动.

Keep a variable, say, last_scroll_position, and when you have a scroll, if last_scroll_position - current_position > 0, the user scrolled up, and down if it's less than 0.

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