CSS 中文开发手册
CSS 中文开发手册
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:empty (Selectors) - CSS 中文开发手册
该:empty伪类代表没有子节点的所有元素。这里只考虑元素节点和文本（包括空格）。注释或处理指令不影响元素是否被认为是空的。
/* Selects any <div> that contains no content */
div:empty {
background: lime;
}
语法
:empty
实例
body {
display: flex;
justify-content: space-around;
}
.box {
background: red;
height: 100px;
100px;
}
.box:empty {
background: lime;
}
<div class="box"><!-- I will be lime --></div>
<div class="box">I will be red</div>
<div class="box">
<!-- I will be red because of the whitespace around this comment -->
</div>
规范
|
Specification |
Status |
Comment |
|---|---|---|
|
Selectors Level 4The definition of ':empty' in that specification. |
Working Draft |
No change |
|
Selectors Level 3The definition of ':empty' 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) |
1.0 (1.7 or earlier) |
9.0 |
9.5 |
3.1 |
|
Feature |
Android |
Edge |
Firefox Mobile (Gecko) |
IE Mobile |
Opera Mobile |
Safari Mobile |
|---|---|---|---|---|---|---|
|
Basic support |
2.1 |
(Yes) |
1.0 (1) |
9.5 |
10.0 |
3.1 |