Remainder (%)
The remainder operator (%
) returns the remainder left over when one
operand is divided by a second operand. It always takes the sign of the dividend.
Note that while in most languages, '%' is a remainder operator, in some
(e.g. Python, Perl)
it is a modulo operator.
For two values of the same sign, the two are equivalent, but
when the dividend and divisor are of different signs, they give different results. To
obtain a modulo in JavaScript, in place of a % n
, use
((a % n ) + n ) % n
.
Syntax
x % y
Examples
Remainder with positive dividend
13 % 5 // 3
1 % -2 // 1
1 % 2 // 1
2 % 3 // 2
5.5 % 2 // 1.5
Remainder with negative dividend
-13 % 5 // -3
-1 % 2 // -1
-4 % 2 // -0
Remainder with NaN
NaN % 2 // NaN
Remainder with Infinity
Infinity % 2 // NaN
Infinity % 0 // NaN
Infinity % Infinity // NaN
Specifications
Specification |
---|
ECMAScript Language Specification # sec-multiplicative-operators |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Remainder ( % ) | ChromeFull support1 | EdgeFull support12 | FirefoxFull support1 | Internet ExplorerFull support3 | OperaFull support3 | SafariFull support1 | WebView AndroidFull support1 | Chrome AndroidFull support18 | Firefox for AndroidFull support4 | Opera AndroidFull support10.1 | Safari on iOSFull support1 | Samsung InternetFull support1.0 | DenoFull support1.0 | Node.jsFull support0.10.0 |
Legend
- Full support
- Full support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.