# JavaScript Math tanh() Method

• Last Updated : 17 Feb, 2022

Below is the example of the Math tanh() Method.

• Example:
 ``
• Output:
```0
0.7615941559557649
0.9999092042625951
1
-0.9640275800758169
0.999329299739067```

The Math.tanh() method is used to calculate the value of hyperbolic tangent of a number.

Syntax:

`Math.tanh(x)`

Parameter: This method accepts a single parameter as mentioned above and described below:

• x: which is a number for which the value of hyperbolic tangent is going to be calculated.

Return value: It returns the calculated value of the hyperbolic tangent of the number.< Below example illustrate the Math tanh() method in JavaScript:

• Example 1: Here formula for calculating hyperbolic tangent of any number e is a mathematical constant having an approximate value equal to 2.718. ```Input :Math.tanh(0)
Output : 0```
• Example 2: In the same way hyperbolic tangent of any number can be calculated just after replacing p with the desired number. Here the same as the above calculation, when we put 18 instead of x then the value becomes as output shown above.
```Input : Math.tanh(18)
Output : 0.9999999999999996```

More codes for the above method are as follows:
Program 1: It is an error case because complex number can not be taken as the parameter of the function only integer value can be taken as the parameter.

 ``

Output:

`Error: Invalid or unexpected token`

Program 2: Other than integer nothing is accepted as the parameter of the function that is why here string as the parameter gives NaN i.e, not a number.

 ``

Output:

```NaN
NaN```

Program 3: Its practical application is that whenever we need to find the value of the hyperbolic tangent of a number that time we take the help of Math.tanh() function in JavaScript.

 ``

Output:

```0
0.7615941559557649
0.9640275800758169
0.9950547536867305
0.999329299739067
0.9999092042625951
0.9999877116507956
0.9999983369439447
0.9999997749296758
0.999999969540041```

Supported Browsers:

• Google Chrome 38 and above
• Firefox 25 and above
• Opera 25 and above
• Safari 8 and above
• Edge 12 and above

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