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文字

返回值:Array<Element(s)>:nth-child

概述

匹配其父元素下的第N个子或奇偶元素

':eq(index)' 只匹配一个元素,而这个将为每一个父元素匹配子元素。:nth-child从1开始的,而:eq()是从0算起的!可以使用:<br>nth-child(even)<br>:nth-child(odd)<br>:nth-child(3n)<br>:nth-child(2)<br>:nth-child(3n+1)<br>:nth-child(3n+2)

参数

indexNumberV1.1.4

要匹配元素的序号,从1开始

示例

描述:

在每个 ul 查找第 2 个li

HTML 代码:
<ul>
  <li>John</li>
  <li>Karl</li>
  <li>Brandon</li>
</ul>
<ul>
  <li>Glen</li>
  <li>Tane</li>
  <li>Ralph</li>
</ul>
jQuery 代码:
$("ul li:nth-child(2)")
结果:
[ <li>Karl</li>,   <li>Tane</li> ]
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