代码实例
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
p:only-of-type
{
background:#ff0000;
}
</style>
</head>
<body>
<div><p>This is a paragraph.</p></div>
<div><p>This is a paragraph.</p><p>This is a paragraph.</p></div>
</body>
</html> 尝试一下 »
点击“尝试一下”按钮查看在线实例
定义和用法
:only-of-type选择器匹配属于同类型中唯一同级元素。
