How React transformed my coding mindset

Wrapped up the React Engineering module @TripleTen and can say now that React finally clicked! This module pushed me beyond static pages. Now I’m building fully dynamic UIs with live data, context management, and reusable components. My latest project: I built a weather-based wardrobe app that pulls live data from the OpenWeather API - updating temperature, city, and conditions in real time. The UI dynamically changes based on day/night cycles and weather types, powered by React hooks, context, and clean component-driven architecture. Feels good to see theory finally turn into something functional. Check it out here: https://lnkd.in/gh-i64Mb #React #FrontendDevelopment #WebDev #SoftwareEngineering #JavaScript #LearningByBuilding

Lena had been coding React for months. Her components worked… sometimes. Her UI looked fine… until it didn’t. But no matter how hard she tried, one problem kept haunting her: “Why does my component keep re-rendering even when nothing has changed?” She blamed React. She blamed useEffect. She even blamed her laptop. But the real problem? She didn’t understand how React truly thinks. See, React isn’t like a friend who hears what you say. It’s more like one who reacts to what you do. Every time you change state or props, React quietly rebuilds what it sees, not to annoy you, but to keep your UI perfectly in sync with your data. The problem wasn’t the re-render. The problem was that Lena didn’t know when she was triggering one. Once she learned that React re-renders only when state or props change and that pure components, memoization, and correct dependency arrays keep it efficient. Right then, everything clicked. She stopped fighting React and started flowing with it. And just like that, the chaos turned into clarity. The lesson? In React and in life, frustration often comes not from what’s broken, But what we don’t yet understand. Slow down. Learn how the system thinks. Once you see the pattern, everything starts making sense. React isn’t just about components, it’s about clarity, connection, and understanding how systems think. That’s also how great developers and great teams work. What’s one React concept that finally made sense to you after struggling with it for a while? Drop it in the comments your insight might be someone else’s breakthrough. #ReactJS #FrontendDevelopment #WebDevelopment #SoftwareEngineering #TechLeadership #CodeNewbie #LearningInPublic #DeveloperMindset #BuildInPublic #TechCommunity #ProblemSolving #Innovation #DigitalTransformation #EntrepreneurMindset #HiringDevelopers #ClientRelationships #TechForGood #CreativeDevelopers

Lessons I’ve Learned Building Complex UIs in React When I first started with React, I thought building great interfaces was just about splitting things into components and managing state properly. But the more I worked on real-world dashboards and complex apps, the more I realized it’s actually about how clean, scalable, and predictable your structure is. Here are a few things I’ve picked up along the way 👇 1️⃣ Keep state simple. Not every app needs Redux or Zustand. Sometimes plain Context or local state does the job better and keeps things easier to debug. 2️⃣ Build once, reuse everywhere. A well-thought-out component saves you hours later. I’ve learned this the hard way while maintaining large dashboards. 3️⃣ Design around the user’s journey, not screens. It’s easy to focus on layouts, but smooth user flow is what actually makes a UI feel “polished.” 4️⃣ Optimize Rendering for Performance Avoid unnecessary re-renders using memoization or pure components. And one more thing clean code always wins over clever code. If your teammates can read it without asking questions, you’ve already done half the job right. What’s something you’ve learned while working with React? Always curious to hear how other devs approach complex UIs. ⚛️ #ReactJS #FrontendDevelopment #WebDevelopment #UIUX #ReactTips #DeveloperJourney #JavaScript

🚀 Thrilled to launch my developer portfolio built with a modern, performance-first stack: React + TypeScript + Tailwind CSS. ✅ What I focused on: • TypeScript for safer, self-documenting code and long-term scalability • Tailwind CSS for rapid UI iteration and consistent design tokens • Component architecture optimized for reuse and future feature growth • Clean separation of concerns (UI / hooks / utilities) • Minimal bundle footprint and fast initial load ✨ Highlights: • Responsive layouts tested across breakpoints • Reusable UI primitives (buttons, cards, layout grid) • Project showcase with filtering • Contact section wired for quick outreach ⚡ Live Site: https://lnkd.in/dKTBfWvk ♐ GitHub Repo: https://lnkd.in/drifhTn9 If you’re exploring modern front-end patterns or want to collaborate on something ambitious - let’s connect. #React #TypeScript #TailwindCSS #WebDevelopment #Frontend #Portfolio #Accessibility #UIUX #DevCommunity

You can’t be a React dev and not know useEffect, but how well do you understand what’s really happening in the back? ⚛️ useEffect is one of the most powerful hooks in the React ecosystem. It lets you sync your component with the outside world for fetching data, updating the DOM or listening to events. Think of it like this: - useEffect runs after the component renders and by default, it runs on every render, unless you control it with the dependency array. Empty array ([]) → runs only once after the first render. Array with dependencies ([value]) → runs only when those values change. Best practices to keep your code clean and efficient: - Don’t forget the dependency array as missing values can cause stale data or unexpected behavior. - Avoid doing heavy logic directly in the effect (extract helper functions to keep it readable). Something you might didn’t know is that a lot of bugs in React come from using useEffect incorrectly,  especially when it comes to dependencies. Mastering useEffect is often the difference between a smooth, predictable UI and a rerender nightmare. —--------------------------------------------------- Hello, I am Lukas, a software engineer with passion for design and web development. Follow me for daily web dev refreshments. #React #WebDevelopment #SoftwareEngineering

“𝗜𝘀 𝗥𝗲𝗱𝘂𝘅 𝘀𝘁𝘂𝗽𝗶𝗱? 𝗪𝗵𝘆 𝗰𝗮𝗻’𝘁 𝗺𝘆 𝗥𝗲𝗱𝘂𝘅 𝗿𝗲𝗱𝘂𝗰𝗲𝗿 𝗷𝘂𝘀𝘁 𝗰𝗵𝗮𝗻𝗴𝗲 𝘁𝗵𝗲 𝘀𝘁𝗮𝘁𝗲 𝗱𝗶𝗿𝗲𝗰𝘁𝗹𝘆?” I’ll admit it: the first time I used Redux, I thought the rules seemed… strange.  “𝘞𝘩𝘺 𝘤𝘢𝘯’𝘵 𝘮𝘺 𝘳𝘦𝘥𝘶𝘤𝘦𝘳 𝘫𝘶𝘴𝘵 𝘤𝘩𝘢𝘯𝘨𝘦 𝘵𝘩𝘦 𝘴𝘵𝘢𝘵𝘦 𝘥𝘪𝘳𝘦𝘤𝘵𝘭𝘺? 𝘐𝘴𝘯’𝘵 𝘵𝘩𝘢𝘵 𝘵𝘩𝘦 𝘸𝘩𝘰𝘭𝘦 𝘱𝘰𝘪𝘯𝘵?” Turns out, Redux isn’t stupid. Here’s the real reason: 👉 Redux depends on immutability to know something changed. When you mutate the existing state, Redux simply can’t detect it, because it uses shallow comparisons, not deep ones. In simple words: 🔗 It compares links, not values. So unless your reducer returns a new object reference, Redux has no signal that anything changed… …and your UI won’t update. If you mutate the old state: ❌ React might not re-render ❌ Debugging becomes guesswork ❌ Time-travel devtools break ❌ State history becomes impossible ❌ Performance optimizations fail 𝗔𝗻𝗱 𝗶𝗳 𝗶𝗺𝗺𝘂𝘁𝗮𝗯𝗶𝗹𝗶𝘁𝘆 𝗳𝗲𝗲𝗹𝘀 𝗽𝗮𝗶𝗻𝗳𝘂𝗹? 👉 Redux Toolkit (RTK) uses Immer, so you can write “mutating” code, and it safely produces an immutable update behind the scenes. The end result: cleaner reducers, fewer bugs, faster debugging. Redux isn’t stupid, it’s strict for a reason, you just need to understand the logic behind it) #redux #reactjs #frontend #javascript #webdevelopment #reactdevelopment #reduxstate #immutability #frontendtips #codingjourney #learninpublic

Day 7 of #30DaysComponentChallenge Today, I successfully developed a Toast Notification System in React ⚛️ entirely from scratch. This system boasts the following features: - Multiple positions available: Top-Left, Top-Right, Bottom, Center - Customizable durations for each toast - Various toast types to choose from: Info, Success, Warning, Error - Seamless entry and exit animations - Utilization of a straightforward yet robust custom hook, useToast, for managing state and lifecycle Engaging in this challenge enabled me to delve into the realm of UI feedback systems, emphasizing their adaptability, responsiveness, and reusability throughout an application. It was a rewarding exploration of React composition and micro-interaction design 💡 Explore the code here: [Code Sandbox](https://lnkd.in/gEcaPPRU) #ReactJS #FrontendDevelopment #WebDevelopment #UIComponents #ToastNotifications #ReactHooks #30DaysComponentChallenge #100DaysOfCode

I don’t see this talked about enough: Over the years working with React, my perspective has changed. Writing components is the easy part. Designing systems that scale is the actual job. A few principles have consistently held up in real-world codebases: • State belongs as high as it makes sense, but no higher. • Predictability > clever abstractions. • Consistency reduces cognitive load more than “best practices” do. • A good UI doesn’t call attention to itself. It just works. Most frontend issues I’ve seen in teams aren’t about React at all. They’re about communication, boundaries, and ownership: – Clear data flow – Well-defined component responsibilities – Shared conventions – Code written for the next person who maintains it Tools will continue to evolve — from class components to hooks to server components — but the fundamentals remain the same: > Know the user. Understand the problem. Then choose the simplest implementation that solves it. Frontend isn’t “just the UI.” It’s where the product becomes real. #react #frontend #softwarearchitecture #webdevelopment #engineering #uiux

📂 Folder Structure is Architecture When you join a new React or Next.js project, what’s the first thing you look at? Probably not the code. You open the folders. That’s because a project’s structure is its first API — the interface between developers and the codebase. I’ve seen projects where: Components and hooks live in a single /utils folder 🫠 The /pages directory doubles as a dumping ground for logic There’s a mysterious /common folder that no one dares to touch A poor folder structure doesn’t just cause confusion — it silently increases cognitive load: Every time you add or refactor something, you need to remember exceptions instead of following patterns. 💡 Over time, I’ve learned: Group by feature, not by type (/users/, /dashboard/, etc.). Keep shared code truly shared — isolate UI primitives from business logic. Name folders with intent, not convenience (/shared means nothing; /ui or /services do). Treat your file tree like a visual map of your architecture. If your folder structure feels clean, your mental model of the app will too. Because clarity scales — cleverness doesn’t. How do you structure your React or Next.js projects? #ReactJS #NextJS #FrontendEngineering #SoftwareArchitecture #CleanCode

🚀 React Concepts Series — Deck 7 is here! This one is special — because understanding how React renders and updates the UI internally instantly sets you apart in interviews and real-world development. Most developers use React every day… but very few actually understand what happens under the hood. This deck breaks it down clearly 👇 💡 What’s inside this deck? ➡️ What “rendering” actually means React calculates changes — it doesn’t directly touch the DOM on every render. Rendering ≠ DOM update. That mindset shift alone improves how you write components. ➡️ Virtual DOM & the diffing algorithm Why React uses VDOM, how it speeds things up, and what really happens when props/state change. ➡️ Reconciliation explained simply How React decides which part of the UI needs updating, what triggers rerenders, and why type/prop/state changes matter. ➡️ The real importance of keys in lists Keys aren’t just for warnings — they directly affect reconciliation, performance, and even UI correctness. ➡️ Interview-focused recap Great for brushing up on: • render vs commit phase • why index keys cause bugs • what triggers a re-render • how React Fiber changed scheduling 🧠 Why this matters: Once you understand React’s render cycle, you build faster apps, fix bugs quicker, and answer interview questions with clarity and confidence. This is one of the highest-value concepts in React — and it truly levels up your mental model. #ReactJS #Rendering #Reconciliation #VirtualDOM #ReactFiber #FrontendEngineering #WebDevelopment #JavaScript #TechEducation #LearningInPublic