Even if you are denied after all your job interviews, don't be sad.
1. you looked promising enough to call you to the interview in the first place
2. you need to work on some gaps in your knowledge/xp. Oh, you didn't know that? Well, now you do! Not even that - you also know what the gaps are!
3. you hear of new technologies, net tricks that are there. Dig in!
4. you become more aware of what positions are there and what requirements could be applied to them in different companies. Makes you build a company profile and make better choices for applications later on.

Now imagine the pressure on your shoulders if they would have hired you while you have so many gaps in your knowledge... It's overtimes every day! It's possibly missed deadlines. It's mishandled tasks. It's bugs all over the place and other devs judging you!

Brush your tears dry, grab candy or a chocolate bar and go improve yourself!