更改父元素的定位可防止Firefox中的子元素CSS3过渡 [英] Changing parent element's positioning prevents child element CSS3 transition in Firefox

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问题描述

在Webkit中,下面的小提琴按预期工作。



在Firefox中,相同的代码以某种方式阻止了发生转换。



http://jsfiddle.net/threehz/JEMN6/27/



我的css:

  #navigation {
background:#ccc;
-webkit-transition:padding-left 0.125s ease;
-moz-transition:padding-left 0.125s ease;
transition:padding-left 0.125s ease;
margin:0;
padding-left:0;
width:100%;
}

.fixed #navigation {
padding-left:100px;
}

.fixed#page-navigation {
position:fixed; // remove this results in #navigation transition working properly in firefox
height:auto;
border-top:1px solid#000;
width:100%;
}

似乎它与父元素的位置变化有关。如上所述,如果我从parent元素中移除position:fixed,则转换在Firefox中有效:



http://jsfiddle.net/threehz/JEMN6/28/



问题是,我试图完成,标题必须固定,并且孩子的padding属性必须转换,所以简单地删除位置:fixed不是一个选项。



想法? / p>

解决方案

如果你从Firebug / DevTools切换它,转换工作。另一方面:




  • 使用 transform:translate(100px) position:absolute >

  • 使用转换延迟



不起作用。转换事件甚至不会触发:/( http://jsfiddle.net/JEMN6/25/



似乎FF无法处理同时重绘#page-navigation 容器(因为 position:fixed 取出文档流)和 #navigation child ,因此transition事件被中止。 p>

正如Alex Morales所说,你可以使用一个动画,但是你需要另一个动画,去除 #fixed class。



通过JavaScript引入最小延迟也是一个选项:

  $('#toggle')。click('on',function(){
$('body')。toggleClass('fixed');

setTimeout(function(){
$('#navigation')。toggleClass('get-padding')
},20);
}

http://jsfiddle.net/JEMN6/26/



不是一个理想的解决方案。


In Webkit, the following fiddle works as expected. That is to say, #navigation's left padding is transitioned properly from 0 to 100px.

In Firefox, the identical code somehow prevents the transition from occuring.

http://jsfiddle.net/threehz/JEMN6/27/

my css:

#navigation {
  background: #ccc;
  -webkit-transition: padding-left 0.125s ease;
  -moz-transition: padding-left 0.125s ease;
  transition: padding-left 0.125s ease;
  margin: 0;
  padding-left: 0;
  width: 100%;
}

.fixed #navigation {
  padding-left: 100px;
}

.fixed #page-navigation {
   position: fixed; // removing this results in #navigation transition working properly in firefox
   height: auto;
   border-top: 1px solid #000;
   width: 100%;
}

It seems it is related to the parent element's positioning changing. As noted above, if I remove position: fixed from the parent element, the transition works in Firefox:

http://jsfiddle.net/threehz/JEMN6/28/

Problem is, for what I am trying to accomplish, the header must become fixed, AND the child padding property must transition, so simply removing the position: fixed is not an option.

Thoughts?

解决方案

The transition works if you toggle it from Firebug/DevTools. In the other hand:

  • Using transform: translate(100px) or position: absolute + left: 100px for the li items or
  • Using a transition delay

don't work. The transition event is not even fired :/ ( http://jsfiddle.net/JEMN6/25/ )

It seems that FF can't handle a simultaneous redrawing of the #page-navigation container (since position: fixed takes it out the document flow) and the #navigation child, so the transition event gets aborted.

As Alex Morales suggests, you could use an animation, but you'd need the opposite one to get a transition when removing the #fixed class.

Introducing a minimal delay through JavaScript is also an option:

$('#toggle').click('on', function() {
  $('body').toggleClass('fixed');

  setTimeout(function () {
    $('#navigation').toggleClass('get-padding')
  }, 20);
});

http://jsfiddle.net/JEMN6/26/

Not an ideal solution, though.

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