As the question says can you find out if a cookie exists within Javascript if it is a HttpOnly? I don\'t need to access the information inside of it, just know it has one.>
No. And see Rob's comments below.
See this, which you probably already saw - http://en.wikipedia.org/wiki/HTTP_cookie#Secure_and_HttpOnly
An HttpOnly cookie is not accessible via non-HTTP methods, such as calls via JavaScript (e.g., referencing "document.cookie")...
Edit: Removed undefined response, I wrote a script that you may not be using :)