乘法赋值（*=）

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.

乘法赋值（*=）运算符将变量乘以右操作数的值，并将结果赋值给该变量。

尝试一下

let a = 2;

console.log((a *= 3));
// Expected output: 6

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

语法

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

示例

使用乘法赋值

js
let bar = 5;

bar *= 2; // 10
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