问题描述
我正在尝试让用户界面工作，如果他们使用鼠标滚轮，我需要让它滚动一个方向，如果他们使用滚动条，我需要另一种方式，如果他们使用滚动条，则需要另一种方式滚动键盘。我相信滚轮和滚动条都充当鼠标事件，但是当点击滚动条时我无法使javascript工作。
I'm trying to get a user interface to work, and I need to have it scroll one way if they are using the mouse wheel, and another way if they are using the scrollbar, and another way if they are using a keyboard. I believe scroll wheel and the scroll bar both act as mouse events, but I haven't been able to get javascript to work when clicking on the scrollbar.
推荐答案
滚动条上的鼠标事件在浏览器之间差别很大，并不是您可以信赖的。我做了一些测试，这就是我发现的：
Mouse events over the scrollbar vary widely between browsers and aren't something you can rely on. I did a few tests and here's what I found:
- Firefox在滚动条上正确地触发所有事件（鼠标按下，移动和向上），即使在拖动栏时也是如此。
- IE6会将鼠标向下但不向上，只有当不拖动栏时才会触发事件。
- Chrome（因此我假设Safari也会）触发仅鼠标按下事件。
- Firefox fires all events (mouse down, move and up) correctly over the scrollbar, even when dragging the bar.
- IE6 fires mouse down but not up, and fires move events only when not dragging the bar.
- Chrome (hence I assume Safari too) fires only mouse down events.
我应该补充一点，我没有看到你想要做你所描述的任何情况，即以不同的方式做出滚动的反应。
I should add that I don't see any situation where you would want to do what you describe, i.e. react in different ways to scrolling.
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