Cannot get property of the object in JavaScript

Question

I have following code:

     var userId = r.response[0].uid; 
     if (typeof ratings[userId] !== 'undefined'){
        ratings[userId].likes = ratings[userId].likes++;
        ratings[userId].name = r.response[0].first_name +" "+ r.response[0].last_name;
     } else {
        ratings[userId] = new Object;
        ratings[userId].likes = 1;                          
        ratings[userId].name = r.response[0].first_name +" "+ r.response[0].last_name; 
     }

So i Have strange thing. When I use console.log(ratings) to see what is in object, it shows me all properties of this object. But when I try to get any property like this:

 console.log(ratings[12345]) or console.log(ratings["12345"])

it is undefined. But console.log(ratings) said me that I have property 12345 (it is an object too). What is wrong in my code and how can I fix it?

Answer 1

If you use numbers as ID for the users, then you have to use

var userId = '12345';
ratings[userId];

or

ratings['12345'];

or

ratings[12345+""]; // this is the last resort, if possibile don't use it!

Keep in mind that pure numbers aren't allowed as JavaScript variable/keys identificator, but if they are coerced to string, then you can use them as key in objects.