Basically it is short and simple privacy policy, that the user can understand and able to read.

if you want to learn the advanced Javascript, you should how JavaScript works internally. Start inplementing the JavaScript in the project. Look for the repository on GitHub and try to understand how they are written , It will take time but you will get the knowlodge. You should reed the book "You don't know JS" Book series , The author has explained the internall concept preciously.

In simple term Input -> output

No problem we are here too help

https://www.youtube.com/playlist?list=PL55RiY5tL51q4D-B63KBnygU6opNPFk_q Watch this tutorial it explain api, and how to design it. It also show how to authenticate.

https://medium.freecodecamp.org/javascript-arrays-and-objects-are-just-like-books-and-newspapers-6e1cbd8a1746 read this it will give you better explaination .

Thanks for the answer. I appreciate,how quickly you response to the question. Eager to share the inner working of the hashnode website.

It depends on you how you want to use it. All software has some flaws . as you can see atom is backed by github and vs code is backed by Microsoft, both are reputed company. Also both are open-source , you can also contribute to it code base and give it some feedback to improve it. Both editor has good extension that improve you development speed. If you ask about me , I constantly switch from atom and vs code ,as per my wish.

That's Right Instead of moving to any framework , learn some JavaScript Dom.

Does it maintain all related information like, how many time you call api