除法赋值（/=）

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

除法赋值（/=）运算符将变量除以右操作数的值，并将结果赋值给该变量。

尝试一下

let a = 3;

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

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

a /= "hello";
console.log(a);
// Expected output: NaN

语法

js
x /= y // x = x / y

示例

使用除法赋值

js
let bar = 5;

bar /= 2; // 2.5
bar /= 2; // 1.25
bar /= 0; // Infinity
bar /= "foo"; // NaN

规范

Specification
ECMAScript® 2025 Language Specification
# sec-assignment-operators

浏览器兼容性

BCD tables only load in the browser

参见