The Math.tanh() function returns the hyperbolic tangent of a number.
tanh()
Math.tanh(x) // x is a number.
let a = Math.tanh(0); console.log(a);// w w w. j a v a 2 s .c o m a = Math.tanh(Infinity); console.log(a); a = Math.tanh(1); console.log(a);