Exactly. By default, every uninitialized object in Javascript equals to undefined. If you want to learn a bit more about this behaviour, you should check this link that talks about Truthy and Falsy elements: some objects that don't contain true or false values, but behave the same way.

I've learned a couple of new things with your posts @matthewdavid, your explanations are very simple and accurate. Keep up the good work.