Factorialize-a-Number.js

//FreeCodeCamp Challengue
//Factorialize a Number
//Wilson Muñoz


function factorialize(num) {
  
  if (num < 0) 
        return -1;
    
  // If the number is 0, its factorial is 1.
  else if (num === 0) 
      return 1;
    
  // Otherwise, call the recursive procedure again
    else {
        return (num * factorialize(num - 1));
    }
 }

factorialize(5);