Html 使用 CSS 的级联 <li>-hover 效果
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Cascading <li>-hover effect using CSS
提问by raisyn
I have got an simple html unordered list.
我有一个简单的 html 无序列表。
<ul>
<li>Item 1</li>
<li>
Group 1
<ul>
<li>Item 2</li>
<li>Item 3</li>
</ul>
</li>
</ul>
I want to use CSS to make a simple effect when the mouse is over an Item or a Group.
当鼠标悬停在 Item 或 Group 上时,我想使用 CSS 来制作一个简单的效果。
li:hover
{
background-color:#ff0000;
}
It works quite fine for "Group 1" or "Item 1" (not contained in a group) - When I'm moving the mouse over the color changes. But if I move over "Item 2" or "Item 3" "Group 1" also remains hightlighted (red background). In this case I only want to highlight "Item 2" or "Item 3".
它适用于“组 1”或“项目 1”(不包含在组中) - 当我将鼠标移到颜色变化上时。但是,如果我移过“项目 2”或“项目 3”,“第 1 组”也会保持高亮显示(红色背景)。在这种情况下,我只想突出显示“项目 2”或“项目 3”。
Has anyone an idea how to do this?
有谁知道如何做到这一点?
Thanks for your help!
谢谢你的帮助!
=============================== EDIT
================================ 编辑
<ul>
<li>Item 1</li>
<li>
Group 1
<ul>
<li>Item 2</li>
<li>Group 2
<ul>
<li>Item 3</li>
<li>Item 4</li>
</ul>
</li>
</ul>
</li>
</ul>
Mouse Over xxx should highlight yyy
xxx -> yyy
Item1 -> Item1
Group1 -> Group1, Item2, Group2, Item3, Item4
Item2 -> Item2
Group2 -> Group2, Item3, Item4
Item3 -> Item3
Item4 -> Item4
鼠标悬停 xxx 应该突出显示 yyy
xxx -> yyy
Item1 -> Item1
Group1 -> Group1, Item2, Group2, Item3, Item4
Item2 -> Item2
Group2 -> Group2, Item3, Item4
Item3 -> Item3
Item4 -> Item4
Please see http://image-upload.de/image/r76d79/1c7af56a19.png,just a quick drawing.
请参阅http://image-upload.de/image/r76d79/1c7af56a19.png,只是一个快速绘图。
采纳答案by raisyn
Found probably the best solution at the jQuery documentation. http://api.jquery.com/event.stopPropagation/
在 jQuery 文档中找到了可能是最好的解决方案。 http://api.jquery.com/event.stopPropagation/
$('li').mouseover(function(e)
{
e.stopPropagation();
$(this).addClass('hover');
});
$('li').mouseout(function()
{
$(this).removeClass('hover');
});
回答by RobinJ
This solution isn't a purely HTML/CSS one, but it works. It uses the Javascript library jQuery.
http://jsfiddle.net/XP3Vp/
这个解决方案不是纯粹的 HTML/CSS 解决方案,但它有效。它使用 Javascript 库 jQuery。
http://jsfiddle.net/XP3Vp/
Put this in the head-section of your page:
把它放在你页面的头部:
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript">
$('li').mouseover(function()
{
if ($('li ul li:hover').length)
{
$('li ul li:hover').css('background','red');
}
else
{
$('li:hover').css('background','red');
}
});
$('li').mouseout(function()
{
$(this).css('background', 'transparent');
});
</script>
Use this if you don't want the underlying list items to be highlighted as well when moving the cursor over Group 1
: http://jsfiddle.net/CwhhN/
如果您不希望在将光标移到上方时也突出显示底层列表项,请使用此选项Group 1
:http: //jsfiddle.net/CwhhN/
回答by ANeves
Group 1
contains Item 2
. So, when you are hovering Item 2
you are also hovering Group 1
.
Group 1
包含Item 2
. 所以,当你悬停时,Item 2
你也在悬停Group 1
。
Thus, with CSS what you want is not possible without mis-formatting HTML on purpose.
因此,如果不故意错误地格式化 HTML,则使用 CSS 是不可能的。
With JS you can get there, though.
If this is acceptable, refer to @RobinJ's answer.
不过,有了 JS,您就可以到达那里。
如果这是可以接受的,请参阅@RobinJ 的回答。
回答by Gabriele Petrioli
The best you can do is to colorize the ul
as well ..
你能做的最好的事情就是给ul
..
ul{background-color:#fff;}
li:hover
{
background-color:#ff0000;
}
something like this http://jsfiddle.net/gaby/DxsDa/although it will still highlight the group 1
text..
像这样的http://jsfiddle.net/gaby/DxsDa/虽然它仍然会突出显示group 1
文本..
Alternatively you can resort to invalid html but i would not suggest that for obvious reasons.. http://jsfiddle.net/gaby/DxsDa/1/
或者,您可以使用无效的 html,但出于明显的原因,我不建议这样做.. http://jsfiddle.net/gaby/DxsDa/1/
回答by ValeriiVasin
Use class or id for UL element (which is parent for highlighted li's) and directly children selector:
对 UL 元素(它是高亮 li 的父元素)使用 class 或 id 并直接使用子选择器:
ul#your_id > li:hover{ background-color: #f00; }
It will fix error which happens because you try to highlight every li's elements :)
它将修复由于您尝试突出显示每个 li 的元素而发生的错误:)