The unary negation operator (-) precedes its operand and negates it.
Unary negation (-)
Try it
Syntax
-x
Examples
Negating numbers
const x = 3; const y = -x; // y = -3 // x = 3
Negating non-numbers
The unary negation operator can convert a non-number into a number.
const x = "4"; const y = -x; // y = -4
Specifications
Browser compatibility
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
Unary_negation |
1
|
12
|
1
|
3
|
3
|
1
|
1
|
18
|
4
|
10.1
|
1
|
1.0
|
1.0
|
0.10.0
|
See also
© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Unary_negation
