jQuery :only-child 选择器
jQuery 教程
· 2019-03-10 09:41:26
实例
选取属于其父元素的唯一子元素的每个 <p> 元素：
$("p:only-child")
定义和用法
:only-child 选择器选取属于其父元素的唯一子元素的每个元素。
语法
$(":only-child")
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