Just help from the bonfires FACTORIALIZE A NUMBER

slap.js

function factorialize(num) {
  // factorial is the product of all positive integers less than or equal to n
 var i = 1;
 var f = 1;
 var a;
 var maybe = [];
 while ( i <= num) {
   f = f * i;
   i++;
  
   
  
 }
  
 
  
  
  return f;
}

factorialize(5);