我有不同数量的div与类“news-list-view-2-cols”。它们包含不同数量的div和类“article”。我想说一个“div class news-list-view-2-cols”中的“div class article”的数量是大于等于2,然后将addClass“article-last”添加到父元素的最后两个div中。
我正在尝试
if ($( ".news-list-view-2-cols .article" ).length >= 2) {
$( ".news-list-view-2-cols .article").slice(-2).addClass("article-last");
}
这适用于html代码中的最后一个“news-list-view-2-cols”,但不适用于之前的版本。所以我必须找到一个解决方案,它给出了每个(.news-list-view-2-cols .article)长度的数量。我试过,但没有成功。
实例:
if ($( ".news-list-view-2-cols .article" ).length >= 2) {
$( ".news-list-view-2-cols .article").slice(-2).addClass("article-last");
}
/*
$( ".news-list-view-2-cols .article" ).each(function() {
if ( this.length >= 2 ) {
this.slice(-2).addClass("article-last")
}
});
*/
.news-list-view-2-cols {
border-bottom: 1px solid #CCC;
}
.article-last {
color: red
}
<div class="news">
<div class="news-list-view-2-cols cf">
<div class="article articletype-0">1</div>
<div class="article articletype-0">2</div>
</div>
</div>
<div class="news">
<div class="news-list-view-2-cols cf">
<div class="article articletype-0">1</div>
<div class="article articletype-0">2</div>
<div class="article articletype-0">3</div>
<div class="article articletype-0">4</div>
</div>
</div>
<div class="news">
<div class="news-list-view-2-cols cf">
<div class="article articletype-0">1</div>
<div class="article articletype-0">2</div>
<div class="article articletype-0">3</div>
<div class="article articletype-0">4</div>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
答案 0 :(得分:0)
您需要仅剪切文章集,而不是整体集:
$( ".news-list-view-2-cols").each(function() {
var articles = $(this).find(".article");
if (articles.length >= 2) {
articles.slice(-2).addClass("article-last");
}
});
直播示例:
$(".news-list-view-2-cols").each(function() {
var articles = $(this).find(".article");
if (articles.length >= 2) {
articles.slice(-2).addClass("article-last");
}
});
&#13;
.news-list-view-2-cols {
border-bottom: 1px solid #CCC;
}
.article-last {
color: red
}
&#13;
<div class="news">
<div class="news-list-view-2-cols cf">
<div class="article articletype-0">1</div>
<div class="article articletype-0">2</div>
</div>
</div>
<div class="news">
<div class="news-list-view-2-cols cf">
<div class="article articletype-0">1</div>
<div class="article articletype-0">2</div>
<div class="article articletype-0">3</div>
<div class="article articletype-0">4</div>
</div>
</div>
<div class="news">
<div class="news-list-view-2-cols cf">
<div class="article articletype-0">1</div>
<div class="article articletype-0">2</div>
<div class="article articletype-0">3</div>
<div class="article articletype-0">4</div>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
&#13;