Custom Exception Constructor

NegativeNumberException

calculateSquareRoot

1. NegativeNumberException(value)

   should take a single argument, the negative number passed to

   calculateSquareRoot

   , and should define an object that has two properties:

   value

   and

   message

   . The

   value

   property should be set to the negative number passed in as an argument, and the

   message

   property should be set to the string 'Number must be positive'. Additionally, the

   toString

   method of the object should return a string that concatenates the

   value

   and

   message

   properties, separated by a space.

2. calculateSquareRoot(number)

   should take a single argument, a number. If the number is negative, it should throw a

   NegativeNumberException

   object with the value of the argument. If the number is positive, it should return the square root of the number using the

   Math.sqrt

   function.