Description of the bug that the onScroll event is triggered three times per scroll under IE6_javascript skills

Here is a person in the same situation as me

http://topic.csdn.net/t/20020826/11/970138.html

But someone in the post tested it and there was no problem. The IE6 I tested was under Windows 2003. I don’t know if the problem has been fixed under XP.

I found an official help document from Microsoft about this BUG in IE5.

http://support.microsoft.com/kb/238004/zh-cn

The solution is to use a global variable to limit the three triggered events to only execute once, and then reset the variable after 200ms.

This problem is relatively rare, so I would like to record it