:nth-last-of-type

该:nth-last-of-type(an+b)CSS伪类匹配的是在它之后有an+b-1个同类型同胞元素的元素，其中n的是正数或零。它本质上与:nth-of-type是一样的，除了它从后向前计数项目，而不是从前往后。

/* Selects every fourth <div> inside a parent element */
/* Counting backwards from the last one */
div:nth-last-of-type(4n) {
  background-color: lime;
}

请参阅有关:nth-child的文档寻求更全面的描述。

语法

:nth-last-of-type( <nth> )where 
<nth> = <an-plus-b> | even | odd

实例

HTML

<div>
  <span>This is a span.</span>
  <span>This is another span.</span>
  <em>This is emphasized.</em>
  <span>Wow, this span gets limed!!!</span>
  <strike>This is struck through.</strike>
  <span>Here is one last span.</span>
</div>

CSS

span:nth-last-of-type(2) {
  background-color: lime;
}

结果

规范

浏览器兼容性