Div with scrollbar inside div with position：fixed [英] Div with scrollbar inside div with position:fixed
问题描述
我有一个div与位置：固定的是我的容器div的一些菜单。我已将其设置为top：0px，bottom：0px始终填充视口。在该div内，我想要有2个其他div，其中较低的一个包含大量的行和溢出：auto。我会期望它将包含在容器div中，但如果有太多的行，它只是扩展到固定的div外面。下面是我的代码和屏幕截图以澄清：
I have a div with position:fixed that is my container div for some menus. I've set it to top:0px, bottom:0px to always fill the viewport. Inside that div I want to have 2 other divs, the lower one of which contains lots of lines and has overflow:auto. I would expect that it would be contained within the container div, but if there are too many lines it simply expands outside the fixed div. Below is my code and a screenshot to clarify:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>MyPlan</title>
<meta name="X-UA-COMPATIBLE" value="IE=8" />
<style type="text/css">
#outerfixed { position:fixed; width:200px; background-color:blue; padding:5px; top:0px; bottom:30px;}
#innerstatic1 { width:100%; background-color:yellow; height:100px;}
#innerstatic2 { overflow:auto; background-color:red; width:100%;}
</style>
</head>
<body>
<div id="outerfixed">
<h3>OUTERFIXED</h3>
<div id="innerstatic1">
<h3>INNERSTATIC1</h3>
</div>
<div id="innerstatic2">
<h3>INNERSTATIC2</h3>
line<br />
...lots of lines
line<br />
</div>
</div>
</body>
</html>
我有办法吗？再次，我想＃innerer2被正确包含在#outerfixed内，并获得滚动条，如果它比它在#outerfixed内的空间更大。
Is there any way for me to do this? Again, I want #innerstatic2 to be properly contained within #outerfixed and get scrollbars if it gets bigger than the space it has inside #outerfixed.
我知道有一些可能性通过固定＃innerstatic2来解决这个问题，但我真的很喜欢它在#outerfixed内部的流程，如果可能的话，所以如果我移动#outerfixed在某处，内部元素会随之而来。
I know there are some possibilites to hack around this by also fixing #innerstatic2, but I would really like it to be within the flow inside #outerfixed if possible, so that if I move #outerfixed somewhere, the inner element would come with it.
编辑：我知道我可以设置overflow：auto on #outerfixed，并获得一个滚动条在整个事情，但我特别想要一个滚动条只是＃innerstatic2，它是一个网格，我想只滚动网格。
I know I can set overflow:auto on the #outerfixed and get a scrollbar on the whole thing, but I specifically want a scrollbar just on #innerstatic2, it is a grid and I want to scroll just the grid.
任何人？可能？
推荐答案
这里有一个两步的解决方案，但它带来了一些代价：
There's a two-step solution for this, but it comes at something of a cost:
- 将
overflow-y：scroll;添加到css for＃innerstatic2。 - 定义
高度（或max-height）for＃innerstatic2，否则不会溢出，它只会继续增加其高度（div是height：auto）。
- Add
overflow-y: scroll;to the css for#innerstatic2. - define a
height(ormax-height) for#innerstatic2, otherwise it won't overflow, it'll just keep increasing its height (the default for adivisheight: auto).
已编辑，因为我只是暂时无法停止。
Edited because I just can't stop myself, sometimes.
演示 jsbin 以显示此jQuery实现，将计算 height
I've posted a demo on jsbin to show a jQuery implementation of this, which will calculate a height for you (it's not generalised, so it'll only work with your current html).
(function($) {
$.fn.innerstaticHeight = function() {
var heightOfOuterfixed = $('#outerfixed').height(),
offset = $('#innerstatic2').offset(),
topOfInnerstatic2 = offset.top,
potentialHeight = heightOfOuterfixed - topOfInnerstatic2;
$('#innerstatic2').css('height',potentialHeight);
}
})(jQuery);
$(document).ready(
function() {
$('#innerstatic2').innerstaticHeight();
}
);
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