Math.tanh()
The Math.tanh()
function returns the hyperbolic tangent
of a number, that is
Syntax
Math.tanh(x)
Parameters
x
-
A number.
Return value
The hyperbolic tangent of the given number.
Description
Because tanh()
is a static method of Math
, you always use it
as Math.tanh()
, rather than as a method of a Math
object you
created (Math
is not a constructor).
Polyfill
This can be emulated with the help of the Math.exp()
function:
Math.tanh = Math.tanh || function(x){
var a = Math.exp(+x), b = Math.exp(-x);
return a == Infinity ? 1 : b == Infinity ? -1 : (a - b) / (a + b);
}
Examples
Using Math.tanh()
Math.tanh(0); // 0
Math.tanh(Infinity); // 1
Math.tanh(1); // 0.7615941559557649
Specifications
Specification |
---|
ECMAScript Language Specification # sec-math.tanh |
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
tanh | ChromeFull support38 | EdgeFull support12 | FirefoxFull support25 | Internet ExplorerNo supportNo | OperaFull support25 | SafariFull support8 | WebView AndroidFull support38 | Chrome AndroidFull support38 | Firefox for AndroidFull support25 | Opera AndroidFull support25 | Safari on iOSFull support8 | Samsung InternetFull support3.0 | DenoFull support1.0 | Node.jsFull support0.12.0 |
Legend
- Full support
- Full support
- No support
- No 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.