CSS参考手册
选择 | Selectors
:only-of-type
该:only-of-type
CSS伪类表示不具有相同类型的同胞元素的元素。
/* Selects each <p>, but only if it is the */
/* only <p> element inside its parent */
p:only-of-type {
background-color: lime;
}
注意:如最初定义的那样,所选元素必须有一个父元素。但从选择器级别4开始,这不再是必需的。
语法
:only-of-type
实例
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
main :only-of-type {
color: red;
}
结果
规范
Specification |
Status |
Comment |
---|---|---|
Selectors Level 4The definition of ':only-of-type' in that specification. |
Working Draft |
Matching elements are not required to have a parent. |
Selectors Level 3The definition of ':only-of-type' in that specification. |
Recommendation |
Initial definition. |
浏览器兼容性
Feature |
Chrome |
Edge |
Firefox (Gecko) |
Internet Explorer |
Opera |
Safari |
---|---|---|---|---|---|---|
Basic support |
1.0 |
(Yes) |
3.5 (1.9.1) |
9.0 |
9.5 |
3.2 |
Feature |
Android |
Edge |
Firefox Mobile (Gecko) |
IE Mobile |
Opera Mobile |
Safari Mobile |
---|---|---|---|---|---|---|
Basic support |
2.1 |
(Yes) |
1.0 (1.9.1) |
9.0 |
10.0 |
3.2 |
选择 | Selectors相关
层叠样式表( Cascading Style Sheets )是一种用来表现 HTML 或 XML 等文件样式的计算机语言。CSS 不仅可以静态地修饰网页,还可以配合各种脚本语言动态地对网页各元素进行格式化。