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Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itâs been available across browsers since 2015å¹´7æ.
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å試ä¸ä¸
const x = 4;
const y = -x;
console.log(y);
// Expected output: -4
const a = "4";
const b = -a;
console.log(b);
// Expected output: -4
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js
-x
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js
const x = 3;
const y = -x;
// y = -3
// x = 3
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js
const x = "4";
const y = -x;
// y = -4
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| Specification |
|---|
| ECMAScript® 2027 Language Specification # sec-unary-minus-operator |