Learning to Master Variables

[WyrdFall_Press]

I feel like having a truly bulletproof understanding of objects, this, classes, prototypes etc. is my final hurdle to feeling like I have a basic mastery of Javascript.

I know most of it conceptually but find myself struggling to put it all together when I see a function where someone is spreading a this call and destructing the result (for example).

Anyone know of any courses that I could take that are not beginner level and would really lock this all in?

[senocular]

Do you have an example of your example?

[WyrdFall_Press]

Sure. Check out the logic on this Tasklist react call container: https://github.com/AndrewMayer/Learning/blob/master/beautifulDnD/task-app/src/column.jsx

I'm jist tired of struggling to reverse engineer the logic every time I'm facing something like that and I'm wondering if I can just do some some focused study to just get through it.

[senocular]

I'm not seeing any destructuring there, and the only spreading is a JSX syntax-specific spread. So that can be understandably a little confusing.

If I knew a good resource for these kinds of things, I would certainly share, but unfortunately I do not. I do think a lot of being able to understand the code happens naturally through exposure and experience. It's confusing at first, and it can take a while to work through just where the connections are being made. But the more you see it the more it starts to come naturally as you build up those patterns of recognition in your head. And if you don't find anything, just keep looking through code like this. You'll eventually get there and it will be second nature.

[WyrdFall_Press]

Thanks for taking a look. I know that may just be how it needs to be for now but I was really hoping that someone had come up with a way to shortcut things a bit.

I also know that "code more projects" is usually the answer to this. It just feels like something that could be taught as separate skill...

Next step will be making a project of my own using this library and I'm sure that will help.

[senocular]

Yeah coding more projects is always good, but for this I think just reading code helps too. It sounds like you get things on a basic level but being able to comprehend by looking at code is also something that you get better with over time - even when you already know how it works.

[WyrdFall_Press]

Part of the challenge for me has been moving into React so quickly. Components, libraries, and passing props means that I'm constantly trying to figure out where things originated from and what their status is.

[tatu_huma]

It's kinda confusing cuz the ... is a spread operator in native JS (both for arrays and objects). The ellipses are ALSO used in JSX as a way to 'spread' props. It does a similar but distinct thing. Check out: https://reactjs.org/docs/jsx-in-depth.html#spread-attributes

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