Most juniors probably don't know the standards of their languages, I didn't for one not at the time when I started learning but this is why i'm more of a mid-range - senior developer as I do architecture too.
If you can get the standards at early point and also learn to refactor your code this would be a good stepping stone, because it will also reduce the lines of code you'll write compared to developers.
I do know it can be hard to find the standards at learning from a young point but it certainly worth it, and I gotta agree with Tapas Adhikary with the core concepts. The reason why we say this is once you know vanilla JavaScript, then really you can tackle almost anything else in JavaScript e.g Vue or a JavaScript library.