The Math.tanh() function returns the hyperbolic tangent of a number, that is
Math.tanh()
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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
| 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 | |
tanh |
38
|
12
|
25
|
No
|
25
|
8
|
38
|
38
|
25
|
25
|
8
|
3.0
|
1.0
|
0.12.0
|
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/Global_Objects/Math/tanh
