Thanks for your review
Yes. I was a little lazy about that if statements. I just wanted to finish coding. (I will try to improve that codes in the coming update but I prefer to add new features and leave that minor contributions to other users to get a reward by contributing)
Actually, I try to explain what is the purpose of using a code (function, and etc) I started using comments when I had to check my old codes! (a hard job)
Thanks again for your review:)

Let's answer your first question:
No. I learned a lot after developing Steemauto.
I try to learn things by experiment and I learned Javascript by using it in my projects. I think my first server-side app was voter.js (GitHub)
Then I coded the server-side operations of steemauto with Javascript (listening blocks, upvoting, and etc) and I changed those operations many times (really many times)
Then I started learning AngularJS and built some local applications with that for using in the Steem blockchain (just for practice)
Then I found ReactJS! I used React and again developed some applications about Steem (just for practice)
Finally, I moved to Angular v6, Typescript, es6, and etc. It is a long story.
Thanks for your time:)