How custom hooks improved my React code

Ever find yourself writing the same data-fetching logic in multiple React components? It's a classic code smell. I used to copy-paste my `useEffect` with `fetch` and state management (`useState` for data, loading, error). It was messy and hard to maintain. 😫 Then I discovered the power of custom hooks. 💡 By encapsulating that logic into a single `useFetch` hook, I cleaned up my components drastically. Now, instead of 15 lines of boilerplate, it's just one: `const { data, loading, error } = useFetch('/api/users');`. It makes the logic reusable, testable, and keeps components focused on the UI. 🚀 𝐀𝐛𝐬𝐭𝐫𝐚𝐜𝐭 𝐲𝐨𝐮𝐫 𝐫𝐞𝐩𝐞𝐭𝐢𝐭𝐢𝐯𝐞 𝐥𝐨𝐠𝐢𝐜 into custom hooks. Your future self will thank you. What small change made a huge impact in your workflow? #ReactJS #FrontendDevelopment #DeveloperTips

🧠 If you're a front end dev and don’t fully get JSON yet… you’re flying blind. Here’s why JSON isn’t just data, it’s the backbone of your front end. It’s how your app talks to APIs, stores state, configures features, and passes info everywhere. JSON (JavaScript Object Notation) is universal, human-readable, and language-agnostic. But it’s also stricter than it looks. -No comments -No trailing commas -No functions -Duplicate keys? Undefined behaviour -Dates? Just plain strings -Parse errors? App crash 🧩 In JavaScript, we use: JSON.parse() // from string → object   JSON.stringify() // from object → string But you must be careful: ✅ Always wrap response.json() in try/catch ✅ Validate data (with JSON Schema or Zod) ✅ Align JSON contracts early with your backend ✅ Post-process dates or special types after parsing Why does it matter? Because strong JSON skills help you: -Decode API payloads confidently -Shape state & configs with clarity -Debug faster and write safer front end code 🚀 Want to dive deeper into front end best practices? 👉https://lnkd.in/gP7p5U8i #frontenddevelopment #webdevelopment #javascript #json #apidevelopment 

🚀 React 19 is changing the way we write async code — Meet the use() hook! If you’ve ever struggled with fetching data using useEffect, managing loading states, or juggling multiple re-renders — this update is going to blow your mind 💥 React 19 introduces a new built-in hook called use(), which allows you to use asynchronous data directly inside your component. Here’s what it looks like 👇 async function getUser() {  const res = await fetch("/api/user");  return res.json(); } export default function Profile() {  const user = use(getUser());  return <h1>Hello, {user.name}</h1>; } ✅ No useState ✅ No useEffect ✅ No manual loading states React simply waits until the data is ready, then renders your component with the final result. 🧠 Why this matters This is more than a syntax sugar — it’s a shift in how React thinks about async rendering. React now “understands” async values natively, especially in Server Components (RSC). You write simpler code. React handles the async flow for you. 💡 The Future of React With features like use(), React is becoming more declarative, faster, and smarter. Less boilerplate. More focus on UI and business logic. 🔥 React is evolving. Are you ready to evolve with it? #React19 #JavaScript #WebDevelopment #Frontend #ReactJS #Programming

✅ Day 141 of #200DaysOfTechTalk 🎯 Today's Topic: Controller Functions in Express.js When you’re building APIs with Express.js, controller functions are what keep your code clean, organized, and easy to manage. Let’s break it down 👇 💡 What’s a Controller Function? A controller function is simply a function that handles what happens when someone hits an API route. It decides what to do with the request and what to send back as a response. Think of it like this: The route tells your app where to go, and the controller tells it what to do once it gets there. ⚙️ Basic Example: // controller/userController.js const getUserData = (req, res) => { const userData = { name: 'John Doe', age: 30 }; res.json(userData); }; module.exports = { getUserData }; // routes/userRoutes.js const express = require('express'); const { getUserData } = require('../controller/userController'); const router = express.Router(); router.get('/users', getUserData); module.exports = router; ✅ Now your routes file only handles the path — and your controller handles the logic. 🚀 Why Use Controller Functions? 1. Cleaner Code – Routes stay simple and readable. 2. Easy to Maintain – Logic is separated, so you can update features without breaking everything. 3. Reusable – You can use the same controller in multiple routes. 4. Easy to Test – Testing becomes much simpler since your logic isn’t tangled in route definitions. 🔥 In Short: 🔹 Routes = Define where things happen. 🔹 Controllers = Define what happens there. 🔹 Keep them separate — your future self (and your team) will thank you. 💭 Question for you: Do you separate your route logic into controllers, or do you keep everything in one file? 👇 Drop your approach — I’d love to hear how you organize your backend code. #ExpressJS #NodeJS #BackendDevelopment #JavaScript #WebDevelopment #FullStackDev #CleanCode #BuildInPublic #200DaysOfTechTalk

⚛️ Hooks & Advanced State Management in React Today’s revision took me beyond useState — into how React actually handles complex data flows. Understanding how hooks manage logic, memory, and UI updates feels like unlocking React’s real power. Here’s what I explored 👇 🔹 Functions – Write clean, reusable logic. 🔹 Hooks – Make components reactive & data-driven. 🔹 Advanced State Management – Go beyond useState for complex apps. 💡 When to move beyond useState: Use useReducer when your component has multiple, related state updates. Use Context API for data that needs to be shared across components. Use Zustand when you want lightweight, global state management without Redux complexity. Example with Zustand: import { create } from 'zustand' const useStore = create((set) => ({ count: 0, increment: () => set((state) => ({ count: state.count + 1 })) })) Clean, minimal, and surprisingly powerful ⚡ The deeper I go, the more I realize — React isn’t just about UI. It’s about managing change efficiently. #ReactJS #Zustand #StateManagement #FrontendDevelopment #WebDevelopment #JavaScript #BuildingInPublic #100DaysOfCode #CodingJourney

Ever find yourself copying and pasting the same logic across multiple React components? It's a classic sign your codebase is getting messy. I used to have `useEffect` hooks for fetching data scattered everywhere. It was a nightmare to maintain. 😫 The game-changer for me was embracing 𝐜𝐮𝐬𝐭𝐨𝐦 𝐡𝐨𝐨𝐤𝐬. Instead of duplicating logic, I now abstract it into a reusable function, like `useFetch(url)`. This hook handles the loading state, the data, and any errors. The component just calls `const { data, loading, error } = useFetch('/api/users');` and it's done. 💡 It keeps my components clean, focused on the UI, and makes the logic super easy to test and update. 🚀 If you write a piece of logic more than once, turn it into a custom hook. Your future self will thank you. What small change made a huge impact in your workflow? #ReactJS #FrontendDevelopment #DeveloperTips

😤 “I wrapped it in useMemo... but the component is still slow!” I faced this while optimizing a React dashboard. I used useMemo and useCallback everywhere — but performance barely improved. Turns out, I was solving the wrong problem. 🧠 What’s Really Happening useMemo and useCallback don’t make code faster — they just avoid recalculations if dependencies don’t change. But if your dependency is always changing, memoization never kicks in. Example 👇 const data = useMemo(() => expensiveCalculation(filters), [filters]); If filters is a new object every render (like { type: 'active' }), useMemo recomputes anyway — no performance win. ✅ The Fix Stabilize your dependencies first. Use useState, useRef, or memoize higher up to prevent unnecessary object recreation. const [filters, setFilters] = useState({ type: 'active' }); Or extract stable references: const stableFilter = useMemo(() => ({ type: 'active' }), []); Then memoization actually works as intended ✅ 💡 Takeaway > useMemo is not magic. It’s only as good as the stability of your dependencies. Optimize data flow first, hooks second. 🗣️ Your Turn Have you ever overused useMemo or useCallback? What’s your go-to way to diagnose React re-renders? #ReactJS #WebDevelopment #PerformanceOptimization #FrontendDevelopment #JavaScript #CleanCode #CodingTips #DevCommunity #LearnInPublic

Ever feel like you're fighting an invisible monster causing infinite re-renders in React? I lost a solid hour to one yesterday. My component was simple: a `useEffect` fetching data. But it was firing non-stop. 😩 I checked the dependency array, and it *looked* fine. The culprit? I was passing an object directly: `useEffect(fetchData, [myConfigObject])`. On every render, a 𝐧𝐞𝐰 `myConfigObject` instance was created, even with the same values. React saw a different object reference and re-ran the effect, triggering another render. A vicious cycle! 🔄 The React DevTools Profiler finally helped me see the light. 💡 Remember: for non-primitive dependencies in `useEffect`, either destructure them into primitives or memoize them with `useMemo`. Have you struggled with this before? #ReactJS #FrontendDevelopment #DeveloperTips

🚀 Mastering React Custom Hooks – Simplifying Reusable Logic! When working with React, we often find ourselves writing the same logic across multiple components — managing toggle states, fetching data, handling form inputs, etc. That’s where Custom Hooks come to the rescue! 💡 🔹 What are Custom Hooks in React? Custom hooks are reusable functions in React that let you extract and share stateful logic between components. They start with use (e.g., useOnlineStatus) They can use built-in hooks like useState, useEffect, useReducer, etc. They do not render UI — they return data or functions that components can use. 🔹 Why use Custom Hooks? Reusability – You can share logic across multiple components. Cleaner Components – Keeps your component code focused on UI, not logic. Separation of Concerns – Logic (like fetching data, online status, timers) lives in a hook, not in the component. #ReactJS #WebDevelopment #Frontend #JavaScript #CustomHooks #CodeReusability #CleanCode

⚛️ A real-life React situation that taught me a valuable lesson! I was fetching data from an API inside my React component. Everything worked fine at first — until I noticed something strange… the API was being called again and again 😅 My first thought: “Is my API haunted?” 👻 Turns out, it was just me forgetting to add the dependency array in useEffect. Here’s what I learned 👇 ❌ Wrong: useEffect(() => { fetchData(); }); ✅ Correct: useEffect(() => { fetchData(); }, []); The empty [] tells React to run the effect only once when the component mounts — not after every render. Lesson learned: sometimes one missing pair of brackets can cause infinite chaos 😆 Every mistake in React makes me understand it better — one re-render at a time! 🚀 #ReactJS #MERNStack #FrontendDevelopment #WebDevelopment #CodingJourney #LearningByDoing