DevIdiot! - Developer News & Resources

How Japan's railways stayed one while splitting apart

DevIdiot! — 2026-06-17 14:03:58

10 games to learn JavaScript - DEV Community 👩‍💻👨‍💻

DevIdiot! — 2022-12-13 04:13:50

We looked at 10 amazing games to learn CSS. And in this article, we'll do the same for... Tagged with javascript, webdev, beginners.We looked at 10 amazing games to learn CSS. And in this article, we'll do the same for JavaScript.Learning a language by playing games is super fun, and for some people, it's a great way to understand the impact of the language visually.Without further ado, here are ten fantastic games where you can learn JavaScript.1. CodinGameCodinGame is a multi-language pla

Top 3 React Testing Library mistakes I should have spotted earlier 🚀

DevIdiot! — 2022-12-17 23:39:19

There are a few mistakes that are incredibly easy to make in React Testing Library and I wish I'd watched out for these earlier. Recently I've fixed hundreds of these in a more extensive code base, so just making a remark here. Watch out for these!1 - Await on synchronous queries// ❌ Incorrect code ❌ await screen.getByTestId('menu') // check for existence // ❌ Incorrect code ❌ const banner = await screen.queryByTestId('banner') expect(banner).not.toBeInDocument() // check for non-existence Here

How Our AI Agents Built a Visual SVG Animation & Lottie Export Tool in Record Time

DevIdiot! — 2026-06-20 07:18:23

Building the Visual SVG Animation & Lottie Export Tool with AI AgentsAt Pixel Office, we're constantly pushing the boundaries of what's possible with AI-driven development. Our latest achievement, the Visual SVG Animation & Lottie Export Tool, is a testament to the power of our AI agents working in unison. This tool simplifies the creation of intricate, lightweight SVG animations and offers versatile export options, including highly optimized Lottie JSON. The Technical Challen

Web Browsers on PDAS

DevIdiot! — 2026-06-20 14:20:47

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Next.js 16: Stop Overusing 'use client' and Master These 5 Advanced RSC Patterns 🚀

DevIdiot! — 2026-04-12 22:14:35

The transition from the Pages Router to the App Router was the biggest shift in the React ecosystem since hooks. Now, with the arrival of Next.js 16, we are moving past the "how do I use these?" phase and into the "how do I architect for scale?" phase.React Server Components (RSC) are no longer just a way to fetch data without useEffect. They are a structural primitive that, when used correctly, can eliminate 70% of your client-side bundle and solve the dreaded waterfall problem.Think of it like

By the Numbers: The Fascinating Data Behind 100 Million Nebility Customers

DevIdiot! — 2026-06-22 14:04:03

Behind every great brand is a story. But behind every great global brand is data — millions of data points that reveal who the customers are, what they want, and how they use the products. Nebility has served over 100 million customers worldwide, making it one of the most popular shapewear brands on the planet. But who are these 100 million women? What do they have in common? And what can the data teach us about the future of shapewear? Let us dive into the numbers.The Global Reach: 100 Million

DisplayMate

DevIdiot! — 2026-06-22 16:45:52

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Steam Machine

DevIdiot! — 2026-06-22 17:09:51

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Show HN: Oak – Git replacement designed for agents

DevIdiot! — 2026-06-22 15:37:48

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Pledging another $400k to the Zig software foundation

DevIdiot! — 2026-06-22 13:43:01

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Nintendo Wii U games running from a 1980's Bernoulli disk [video]

DevIdiot! — 2026-06-21 20:19:06

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Moebius: 0.2B image inpainting model with 10B-level performance

DevIdiot! — 2026-06-22 13:53:02

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Charge Robotics (YC S21) Is Hiring Software and Hardware Engineers

DevIdiot! — 2026-06-22 17:00:17

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Finding the Best Dog Treat with Statistics

DevIdiot! — 2026-06-22 17:46:48

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Prompt Injection as Role Confusion

DevIdiot! — 2026-06-22 15:48:55

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How to Build a Reusable Button Component in React with TypeScript

DevIdiot! — 2026-06-22 17:13:28

IntroductionWhen I started building my Smart Budget Tracker app, I noticed I was copy-pasting button code everywhere - submit buttons, link buttons, loading buttons. Each one looked slightly different. That's when I decided to build one reusable button component to rule them all.In this post I'll walk you through how I built it using React and TypeScript. What We are BuildingA single component that handles:Regular click buttonsFrom submit buttonsNavigation link buttonsLoading state w

The mistake is assuming data shape and state shape should always match

DevIdiot! — 2026-06-22 16:32:07

When you first build a form in React, putting everything into one big state object feels like the cleanest option.It mirrors the UI nicely.Personal info goes under personalInfo.Address fields go under address.Education, projects, company details — each section gets its own nested object.At that stage, it feels organized. Maybe even “well structured.”Then you try to update a single field.Not the whole form. Not even a section. Just one field — say city.And suddenly a simple update doesn’t feel si

Frontend Is Easy… Until You Actually Build Something

DevIdiot! — 2026-06-22 16:31:52

Every frontend developer has heard some variation of these:"It's just a screen.""Backend does the real work.""AI can generate that.""Just use ShadCN.""Just copy the component.""It's just a checkbox."And every frontend developer silently smiles because they know where this story is headed.Because somewhere, deep inside Jira, a "simple checkbox" is preparing to ruin someone's week. The Great Myth: Frontend Being EasyPeople outside frontend often imagine our job like digital LEGO.ProblemSoluti

Best Resources for CISSP Exam Preparation and Success.

DevIdiot! — 2026-06-22 18:23:18

CISSP Certification Exam Preparation Guide with Exam4LeadIntroduction to the CISSP CertificationThe CISSP certification is one of the most respected credentials in the cybersecurity industry. Recognized worldwide, it validates a professional's knowledge and experience in information security, risk management, and cybersecurity best practices. As organizations continue to face evolving cyber threats, the demand for skilled security professionals has increased significantly, making the CISSP certi

Your AI writes the logic. Studio tunes the UI. They don't compete.

DevIdiot! — 2026-06-22 16:43:44

I was building a dashboard. The card layout was almost right — just needed a bit more breathing room, a tighter border radius on the inner rows, and the label font to feel slightly lighter. Three small things.I typed the description into Cursor. It came back with 180 lines rewritten. Every sx prop touched, four components restructured, a new wrapper div appeared. The layout looked the same. The diff was enormous.I hit Ctrl+Z and went back to staring at the code.That was the moment I stopped thin

Don't just find the broken import. Bypass it.

DevIdiot! — 2026-06-22 16:07:49

A dependency five levels down throws, and your whole canvas goes white. CrossUI Studio's Dependency Graph still draws — zero build — points you straight at the blinking node, and then lets you inject a mock for the broken module to bring the page back. No file edit. No rebuild.The Dependency Graph is built from static AST parsing, not a build — open a file and the import tree renders instantly, even when the canvas has completely crashed. The failing module blinks with its exact line/column. The

Add "Try in Studio" to Your React Tutorials in 5 Minutes

DevIdiot! — 2026-06-22 14:40:38

~7 min read ·TUTORIALYour readers copy-paste your code examples. Wouldn't it be better if they could try them live, in the browser, right from your article? Add an "Open in Studio" button with a single script tag. No build, no local setup, no dependencies.Bridge is how Studio reaches your audience. If you write React tutorials, teach courses, sell component templates, or build UIs for clients — one button turns your static code examples into live, editable Studio workspaces. This is how you set

React Server Components in 2026: Patterns, Pitfalls, and When to Actually Use Them

DevIdiot! — 2026-06-22 15:36:09

React Server Components in 2026: Patterns, Pitfalls, and When to Actually Use ThemMost React Server Components problems stem from teams treating them like regular components with a new rendering location. The architecture shift is deeper than that. RSC fundamentally changes where code executes, what data can cross boundaries, and how developers reason about state. Teams that ignore these constraints burn weeks debugging serialization errors and performance regressions.The pattern that prod

Form drafts that survive a closed tab — and the 5 bugs everyone ships first

DevIdiot! — 2026-06-22 16:19:36

Saving React form drafts to localStorage: five failure modes, three from one mistakeA user fills out a long form, the tab closes, and the work is gone. The fix looks like two useEffects. It isn't.A naive "persist to localStorage" hook breaks in five distinct ways, and most of them never show up in the demo, the code review, or local testing. Three of the five aren't separate bugs at all — they're the same mistake showing up in three places.The snippets below are distilled from use-form-dra

Using Scroll-Driven Animations for Opposing Scroll Directions

DevIdiot! — 2026-06-22 12:39:13

Sometimes designers have silly ideas that eventually grow on you. That happened to me with this concept where I had to build columns of items moving in opposite directions when a user scrolls the page.CodePen Embed FallbackNote: This demo respects reduced motion settings, so you’ll need to enable motion to see the effect. And we’re looking at Chrome and Safari support as I’m writing this.It’s really not as hard as you might think, thanks to modern CSS features, specifically scr

Common Lisp Development Tooling

DevIdiot! — 2026-03-21 20:04:08

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Deadly AI Fake News Website Empire for Ad Revenue and Phishing

DevIdiot! — 2026-06-20 08:19:52

Discover the alarming rise of AI-generated fake news websites that are spreading misinformation, generating massive ad revenue, and luring unsuspecting users into phishing scams.
link ; https://onepdfguide.com/deadly-ai-fake-news-website-empire-for-ad-revenue-and-phishing/

8 Modern Dev Tools to 100X Your Productivity 🔥

DevIdiot! — 2025-03-24 04:55:15

In today’s fast-paced tech world, developers constantly seek tools to streamline their workflow, improve efficiency, and save time. With…

Browser APIs - the whole ocean of features to build apps

DevIdiot! — 2026-06-19 12:47:43

Your browser ships somewhere between 350 and 450 APIs (depending on the browser). Most developers reach for the same dozen. There's an ocean of platform features sitting unused.The web platform is enormous. We just keep treating it like a phone book. ProblemHow to know what you need? MDN is nice but it's just a catalog. Most of a time you need to know what to look for. caniuse is per-feature, web.dev is article-driven. Nothing gives you the map.What I wanted was a map - a single picture of