calc() - [ CSS 4.2.4参考手册 ] - 在线原生手册 - php.cn

CSS 4.2.4参考手册

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文字

语法：

calc() = calc(四则运算)

说明：

用于动态计算长度值。

需要注意的是，运算符前后都需要保留一个空格，例如：width: calc(100% - 10px)；
任何长度值都可以使用calc()函数进行计算；
calc()函数支持 "+", "-", "*", "/" 运算；
calc()函数使用标准的数学运算优先级规则；

兼容性：

IE	Firefox	Chrome	Safari	Opera	iOS Safari	Android Browser	Android Chrome
6.0-8.0	2.0-3.6	4.0-18.0	3.1-5.1	15.0+	3.2-5.1	2.1-4.3	18.0
9.0 ^#1	4.0-15.0 ^-moz-	19.0-25.0 ^-webkit-	6.0 ^-webkit-		6.0-6.1 ^-webkit-	4.4-4.4.4 ^#2	19.0-25.0 ^-webkit-
10.0+	16.0+	26.0+	6.1+		7.0+	4.4-4.4.4 ^#2	26.0+

当在 background-position中使用calc()时将会导致浏览器崩溃；
部分版本在使用calc()时，乘法和除法可能无效；

示例：

实例

<!DOCTYPE html>
<html lang="zh-cmn-Hans">
<head>
<meta charset="utf-8" />
<title>calc()函数_CSS参考手册_web前端开发参考手册系列</title>
<meta name="author" content="Joy Du(飘零雾雨), dooyoe@gmail.com, www.doyoe.com" />
<style>
.test {
	width: calc(100% - 50px);
	background: #eee;
}
</style>
</head>
<body>
<div class="test">我的宽度为100% - 50px</div>
</body>
</html>

运行实例 »

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