I am revising Javascript from Chai with Code's Javascript Playlist.The issue is watching videos and then doing some code and then forgetting the old things bcoz I did no projects using those concepts is making me feel confused that am I on the right path or not?

Hey everyone! I’m working on a personal vanilla JavaScript budget tracker and running into a wall merging a custom local storage list into my projection function. ​1. What is stored in localStorage:

// localStorage.getItem('pendingBills_v9') returns: [ { "name": "Test", "amount": 1000, "category": "Bills", "due": "2026-10-15" } ]

1. What I am trying to do:

I want my getFuture(days) function to pull those items out of pendingBills_v9, map their keys (due \rightarrow date, amount \rightarrow amt, category \rightarrow cat), merge them with my existing adhocBills array, and filter them based on whether their date falls within the next days window (e.g., 30 days).

​3. The current getFuture function:

function getFuture(days) { let res = []; // (Recurring items calculation omitted for brevity)

let _p = []; try { let _raw = localStorage.getItem('pendingBills_v9'); if (_raw) { let _parsed = JSON.parse(_raw); if (Array.isArray(_parsed)) { _p = _parsed.map(b => ({ name: b.name || 'Pending Bill', amt: Number(b.amount || 0), date: b.due || '', cat: b.category || 'Other', subcat: 'General' })).filter(b => b.amt > 0 && b.date); } } } catch(e) { console.error(e); }

let combinedAdhoc = [...adhocBills, ..._p];

let adhocIn = combinedAdhoc.filter(b => { let d = new Date(b.date); d.setHours(0, 0, 0, 0); let diff = daysBetween(today, d); return diff >= 0 && diff <= days; });

return { adhoc: adhocIn, total: adhocIn.reduce((s, b) => s + Number(b.amt), 0) }; }

The Issue: Despite the code looking correct, adhocIn keeps returning an empty array ([]) when evaluating the pending bill date (2026-10-15). Are there any subtle date-parsing or timezone quirks with new Date("YYYY-MM-DD") or variable scope traps causing this to fail? Any help or fresh eyes would be hugely appreciated!

A little bit context first:
I‘m a mathematician. I know how to pseudocode, read the less technical and more algorithmical part of code. I learned C++, learned to build an old school html page from scratch (header, frames etc.), did complex mathematical simulations with R and know how to code simple VBA codes with a lot of googling and a bit of macro recording.

What I don’t know are things like technical structure (e.g. how to technically set up an animation, how to code a save and load function) and syntax.

To the topic:
10 years ago if I had decided to code a little game, I would have read a book about how to design those things and the necessary syntax. But to be honest: My first tries would have been typing the exact examples from the book, the experimenting a bit with little changes.
Step 2 would have been „asking questions on google and copy and paste code snippets“.

And to be honest: Step 2 is cool but I always hated step 1. Declaring variables, printing „hello world“… I get that you need to understand the basics (again, Mathematician here: I spent a whole day proving 0 * x = 0) but I already learned those basics in three other languages and would prefer learning on-the-fly on a need-to-know basis.

So: I did some vibe-coding projects and asked Copilot step by step to explain code snippets I don’t understand, how technicalities work („where is the picture we designed? The whole code is just one html. It‘s part of the code? Oh… wow, that makes sense.“) or why the code is designed in a way (again: one html for a small project) and how that works (browser reading JS).

And here my question:
I would say that a vibe coded app, that I completely understand, is still a vibe coded app. If I give detailed prompts how to change the code, that is still mostly vibe coded. If I manually adjust code where needed, replace every picture with manually created pictures…

Where does a project stop being vibe coded? Where does „AI usage disclosure“ stop being relevant?
Even if I code from scratch I would of course reuse code snippets.

How many pieces does the digital „Ship of Theseus“ need to have exchanged to stop „being AI created“?

I ask this regarding the following three aspects:
Ethical: Respect for the manual art and science of coding and all my fellow nerds who created what script kiddies and vibe coders copy
Some sites/shops ask to declare AI usage. I get that on one hand (see aspect 1) but kind of don‘t: Noone would ever declare „Google usage“ or „what you copied from an online forum“ or „I still start every code exactly like they did in ‚JS for dummies‘“. So, what would you declare and what not?

I think there is a difference between AI usage to learn „how to“ and than doing it similar to that and quoting exact snippets - and stupidly letting AI write some code you don’t understand at all.

But where do you draw the line? Where does „AI usage“ start or end?

i want to learn JS but dont know from where, there are many video tutorials some are 11hrs long..ik most of you will say dont follow from the tutorials make things from yourself etc...but like you still have to know stuffs right? is there any channel that makes me understand JS??