Math.tanh()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
A função Math.tanh() retorna a tangente hiperbólica de um número, que é:
Experimente
console.log(Math.tanh(-1));
// Expected output: -0.7615941559557649
console.log(Math.tanh(0));
// Expected output: 0
console.log(Math.tanh(Infinity));
// Expected output: 1
console.log(Math.tanh(1));
// Expected output: 0.7615941559557649
Syntax
Math.tanh(x)
Parameters
x-
Um número.
Return value
Uma tangente hiperbólica de um número dado.
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).
Examples
Using Math.tanh()
js
Math.tanh(0); // 0
Math.tanh(Infinity); // 1
Math.tanh(1); // 0.7615941559557649
Polyfill
This can be emulated with the help of the Math.exp() function:
js
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);
};
Especificações
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-math.tanh |