Firefox的scrollTop重置zIndex更改

每当我更改给定的div的zIndex（甚至到相同的值），它的scrollTop属性重置，它滚动回来开始。这会对我的网站造成非常难看的效果（在重新绘制整个div时减速和黑色矩形）。 scrollTop reset后，我可以设置它，但这会导致另一个丑陋重绘。Firefox的scrollTop重置zIndex更改

这个FF bug让我很生气！我在mozilla https://bugzilla.mozilla.org/show_bug.cgi?id=623937中提交了一个bug，但他们并不在意它的工作！请问，如果有人知道如何解决这个问题与一些JavaScript魔术？也许玩HTMLElement原型以某种方式覆盖scrollTop？

这里去一个小的测试案例”

<html> 
<head> 
<style type="text/css"> 
div#parentDiv 
{ 
position: absolute; 
top: 10px; 
left: 10px; 
width: 300px; 
height: 200px; 
background-color: green; 
} 
div#elementToScroll 
{ 
position: absolute; 
top: 40px; 
left: 40px; 
width: 200px; 
height: 100px; 
overflow-y: hidden; 
background-color: blue; 
color: white; 
} 
</style> 
</head> 

<body> 

<div id="parentDiv"> 
This is the parent DIV 
<div id="elementToScroll">This is the child div with overflow-y: hidden and content a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of a lot of ; </div> 
</div> 

<script> 
var parentDIV = document.getElementById("parentDiv"); 
var elementToScroll = document.getElementById("elementToScroll"); 
alert ("elementToScroll.scrollTop initial: " + elementToScroll.scrollTop); 
elementToScroll.scrollTop = 20; 
alert ("We set elementToScroll.scrollTop = 20: current value is: " + elementToScroll.scrollTop); 
parentDIV.style.zIndex = 0; 
alert ("We set parentDIV.style.zIndex and now elementToScroll.scrollTop is: " + elementToScroll.scrollTop); 
</script> 

</body> 
</html>

来源

2011-02-05 Boris Hamanov

这是一个完整的神秘火狐如何决定什么提交真实开发商的bug – selbie 2011-02-05 06:26:15

它似乎并不特定于zIndex。切换可见性样式也会重置滚动位置。 – selbie 2011-02-05 07:11:10