此页面由社区从英文翻译而来。了解更多并加入 MDN Web Docs 社区。
除法(/)
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.
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。
In this article
尝试一下
console.log(12 / 2);// Expected output: 6console.log(3 / 2);// Expected output: 1.5console.log(6 / "3");// Expected output: 2console.log(2 / 0);// Expected output: Infinity语法
js
x / y示例
>基本除法
js
1 / 2; // 0.5Math.floor(3 / 2); // 11.0 / 2.0; // 0.5除以零
js
2.0 / 0; // Infinity2.0 / 0.0; // Infinity, because 0.0 === 02.0 / -0.0; // -Infinity规范
| Specification |
|---|
| ECMAScript® 2026 Language Specification> # sec-multiplicative-operators> |