:only-of-type
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
:only-of-type
CSS 伪类代表了任意一个元素,这个元素没有其他相同类型的兄弟元素。
尝试一下
备注:根据原来的定义,被选择的元素必须具有父元素。直到 Selectors Level 4 开始,这个要求就不是必须的了。
语法
css
:only-of-type {
/* ... */
}
示例
为没有同类型兄弟元素的元素设置样式
HTML
html
<main>
<div>I am `div` #1.</div>
<p>I am the only `p` among my siblings.</p>
<div>I am `div` #2.</div>
<div>
I am `div` #3.
<i>I am the only `i` child.</i>
<em>I am `em` #1.</em>
<em>I am `em` #2.</em>
</div>
</main>
CSS
css
main :only-of-type {
color: red;
}
结果
规范
Specification |
---|
Selectors Level 4 # only-of-type-pseudo |
浏览器兼容性
BCD tables only load in the browser