AdventOfCodeDay12.js

var input = [1,"red",5]; 

var hasRedProperty = function(obj)
{
  for (var property in obj) 
  { console.log(property + " " + obj[property]);
    if(obj[property] === "red") return true;
  }
  return false;
};
  
function iterate(obj, sum) 
{ 
    // uncomment this line for part 2
    //if(hasRedProperty(obj) && !(obj instanceof Array)) return sum;
    
    for (var property in obj) 
    {
        if (obj.hasOwnProperty(property)) 
        {
            if (typeof obj[property] == "object")
            {
                sum = iterate(obj[property], sum);
            }
            else
            {
              console.log(property + "   " + obj[property]);
              var n = parseInt(obj[property], 10);
              if(!isNaN(n))
              {
                sum += n;
              }
            }
        }
    }
    return sum;
} 
var sum = iterate(input, 0);
console.log("sum: " + sum);