CSS last-child 选择器:选择特定类的最后一个元素，

问题描述

<div class="commentList">
   <article class="comment " id="com21"></article>
   <article class="comment " id="com20"></article>
   <article class="comment " id="com19"></article>
   <div class="something"> hello </div>
</div>

我要选择#com19 ?

.comment {
    width:470px;
    border-bottom:1px dotted #f0f0f0;
    margin-bottom:10px;
}

.comment:last-child {
    border-bottom:none;
    margin-bottom:0;
}

只要我确实有另一个 div.something 作为commentList 中的实际最后一个子项，这将不起作用.在这种情况下是否可以使用 last-child 选择器来选择 article.comment 的最后一次出现?

That does not work as long as I do have another div.something as actual last child in the commentList. Is it possible to use the last-child selector in this case to select the last appearance of article.comment?

jsFiddle

推荐答案

:last-child 仅在相关元素是容器的最后一个子元素而不是特定类型的最后一个子元素时有效的元素.为此，您需要 :last-of-type

:last-child only works when the element in question is the last child of the container, not the last of a specific type of element. For that, you want :last-of-type

http://jsfiddle.net/C23g6/3/

根据@BoltClock 的评论，这只是检查最后一个 article 元素，而不是 .comment 类的最后一个元素.

As per @BoltClock's comment, this is only checking for the last article element, not the last element with the class of .comment.

body {
  background: black;
}

.comment {
  width: 470px;
  border-bottom: 1px dotted #f0f0f0;
  margin-bottom: 10px;
}

.comment:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
}

<div class="commentList">
  <article class="comment " id="com21"></article>

  <article class="comment " id="com20"></article>

  <article class="comment " id="com19"></article>

  <div class="something"> hello </div>
</div>

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