If you already know about ES6 classes, what you say is obvious, I'm sure. Or if you're in a place where someone more experienced can teach you. Neither of those things applied to me. I had no prior webdev experience, used to languages where this does not behave like it does in JS, and relying on documentation to guide me.

It can be nearly impossible to Google something if you don't even know what it is that you don't know.

There's a comment by, well, YOU, from March this year[0] on a github issue discussing improvements to documentation, suggesting it is one of the most common troubleshooting issues, so I'm not the only idiot failing to grasp this when first diving into webdev.

It would help tremendously if there was even just a simple sentence in the tutorial like:

> "By the way, we are using an arrow function here because JavaScript has some subtle behaviour when it comes to this, but explaining the details of that here would take too long. See [here], [here] and [here]"

.. with a few links explaining both this and ES6 classes in more detail. Because otherwise you can easily get stuck not even knowing where to look for the cause of the bug.

[0] https://github.com/facebook/react/issues/8060#issuecomment-2...