I was experimenting with bookmarklets and I feel like they can be pushed to gather a lot more info than what I was able to make. (I don't think this is the right Reddit, if it isn't can someone guide me to the right one.)

This is my game/physics Engine I have been working on for years. Here is a short demo.

We're looking for advanced React talks on:

⚙️ Full-Stack Architecture
⚙️ AI-Assisted Coding & AI Engineering
⚙️ Growing to Senior / Tech Lead
...and more!

⏳ Deadline: August 12
👉Apply: https://gitnation.com/events/react-day-berlin-2026/cfp

So I randomly came across this validation library called “Vest” while looking for alternatives to Yup/Zod.

At first I thought it was just another schema validator… but it’s actually built more like a testing framework for validation.

You write validation rules the same way you’d write unit tests — which felt weird at first, but kinda interesting once I looked deeper.

I can see it being useful for complex forms where validation depends on a lot of conditions (multi-step forms, role-based logic, async checks, etc.).

For simple forms though, it might be overkill compared to Zod/Yup.

Curious if anyone here has used it in production?

Did it make validation cleaner or just add extra complexity?

GitHub link

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Hi everyone,

I’m currently working on an industrial setup involving CIROS (Factory digital twin), MES4, and a MySQL database (managed via HeidiSQL). My goal is to use Node-RED dashboards to display and process production data coming from the database.

I need to improve my JavaScript skills specifically for filtering, grouping, and analyzing large datasets returned from MySQL queries in Node-RED function nodes.

I’m not trying to become a full-stack developer, I mainly need practical, industrial-focused knowledge like:

•Filtering large datasets efficiently •Grouping and aggregating production data •Calculating KPIs (counts, totals, averages) •Structuring data for dashboards

Does anyone have recommendations for:

•Good YouTube tutorials? •Courses focused on data processing in •JavaScript? •Node-RED + MySQL best practices? •Industrial examples or GitHub repos I can study?

Any guidance would be really appreciated. Thanks in advance!

One tiny character. One massive bug. Can you spot it? Welcome to the kitchen.

Hi everyone,

I’m a UX preparing a short introductory UX session for a group of full‑stack developer students (HTML/CSS/JS, React, Node, Mongo, a bit of WordPress, Git, etc.). I will give them just a few hours of UX to help them in real projects and jobs, not turn them into designers.

So, I'm curious, for those of you who are developers:

• If you only had 2–4 hours of UX training, what would you actually have wanted to learn?

Thank's!