Math.sign( ) Function

The Math.sign() is a builtin function in JavaScript and is used to know the sign of a number, indicating whether the number specified is negative or positive.

Return Value: The Math.sign() function returns five different values as described below:

  1. It returns 1 if the argument passed is a positive number.

  2. It returns -1 if the argument passed is a negative number.

  3. It returns 0 if the argument passed is a positive zero.

  4. It returns -0 if the argument passed is a negative zero.

  5. If none of the above cases match,it returns Nan.

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