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URL: http://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Operators/Division

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除法(/)

基线 广泛可用

自 2015年7月 起,此特性已在主流浏览器中得到支持,可在大多数设备和浏览器版本中正常使用。

除法/)运算符计算两个操作数的商,其中左操作数是被除数,右操作数是除数。

尝试一下

console.log(12 / 2);
// Expected output: 6

console.log(3 / 2);
// Expected output: 1.5

console.log(6 / "3");
// Expected output: 2

console.log(2 / 0);
// Expected output: Infinity

语法

js
x / y

示例

基本除法

js
1 / 2; // 0.5

Math.floor(3 / 2); // 1

1.0 / 2.0; // 0.5

除以零

js
2.0 / 0; // Infinity

2.0 / 0.0; // Infinity, because 0.0 === 0

2.0 / -0.0; // -Infinity

规范

规范
ECMAScript® 2027 Language Specification
# sec-multiplicative-operators

浏览器兼容性

参见

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