[英]css selector for first child element
Let's say my html looks like this: 假设我的html看起来像这样:
<div class="container">
<... some html here ...>
</div>
I want to get the first direct child of .container
. 我想成为.container
的第一个直接孩子。
I could do .container > div:first-child
but that's assuming the it is a div
which is not always the case. 我可以做.container > div:first-child
但这是假设它是一个div
,但并非总是如此。
Use the :first-child
pseudo-class without a tagname: 使用不带标记名的:first-child
伪类:
.container > :first-child
This will grab any element that is the immediate first child, regardless of its tagname. 无论其标记名是什么,它都将获取任何作为直接第一个子元素的元素。 This is similar to the way in which we use other pseudo-classes such as :hover
which alone targets any element, while a:hover
targets only the hover state of anchors. 这类似于我们使用其他伪类的方式,例如:hover
仅针对任何元素,而a:hover
仅针对锚点的悬浮状态。
Not using the element itself, but a class is a better solution and way more semantic for so many reasons . 出于多种原因 ,不使用元素本身,而是使用类是一种更好的解决方案,并且使用更多语义 。
And give the class to the children of the element, not only the container like this: 并将类提供给元素的子元素,而不仅仅是这样的容器:
HTML: HTML:
<article class="container">
<p class="blah">First paragraph...</p>
<p class="blah">Lorem ipsum...</p>
<p class="blah">Dolor sit amet...</p>
</article>
CSS: CSS:
.blah {
background: red;
color: white;
}
.blah:first-child {
background: #000;
}
You can see it in action here: http://jsfiddle.net/Roobyx/ygP4B/ 您可以在此处查看其运行情况: http : //jsfiddle.net/Roobyx/ygP4B/
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