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乘法(*)
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.
乘法(*)运算符计算操作数的乘积。
In this article
尝试一下
console.log(3 * 4);// Expected output: 12console.log(-3 * 4);// Expected output: -12console.log("3" * 2);// Expected output: 6console.log("foo" * 2);// Expected output: NaN语法
js
x * y示例
>数值乘法
js
2 * 2; // 4-2 * 2; // -4与 Infinity 相乘
js
Infinity * 0; // NaNInfinity * Infinity; // Infinity非数值乘法
js
"foo" * 2; // NaN规范
| Specification |
|---|
| ECMAScript® 2026 Language Specification> # sec-multiplicative-operators> |