Optimize React Code with Less useEffect

Read down below for the full Explination : 1. array.sort() → array.toSorted() ❌ array.sort() Mutates (changes) the original array Can cause hidden bugs in React state Not immutable-friendly ✅ array.toSorted() Returns a new sorted array Keeps original array untouched Safer for modern functional patterns 👉 In React, immutability = predictable UI. 2. JSON.parse(JSON.stringify(obj)) → structuredClone(obj) ❌ JSON trick Breaks Dates Breaks Maps/Sets Removes functions Fails with circular references ✅ structuredClone() Deep clones properly Supports complex data types Cleaner and faster 👉 Stop using the “hack”. Use the real API. 3. Promise.all() → Promise.allSettled() ❌ Promise.all() Fails immediately if ONE promise fails You lose other results ✅ Promise.allSettled() Waits for ALL promises Returns success + failure results Perfect for dashboards, multiple API calls 👉 More resilient apps. 4. indexOf() → findIndex() ❌ indexOf(value) Only works for exact matches Doesn’t work well with objects ✅ findIndex(callback) Can search with logic Works with objects More flexible Example: users.findIndex(user => user.id === 10) 👉 Cleaner + more expressive. #JavaScript #ModernJavaScript #WebDevelopment #FrontendDevelopment #CleanCode #ReactJS #SoftwareEngineering

🚀 From Zero to Frontend – Part 8 Why Some Data Takes Time to Load (Async/Await Explained) Have you ever noticed a loading spinner on a website? That happens because data doesn’t arrive instantly. JavaScript handles this using asynchronous programming. Instead of blocking everything, it waits for results in the background. Modern syntax looks like this: JavaScript async function getUsers() { const response = await fetch("https://lnkd.in/gngWUK98"); const data = await response.json(); console.log(data); } What’s happening? • async allows asynchronous behavior • await pauses execution until data is ready • The UI stays responsive Without async/await: Apps would freeze Users would get frustrated Experience would break Understanding async/await helped me understand how real-world apps manage time and data. Next → Let’s talk about something many developers ignore: Event Bubbling. #JavaScript #AsyncAwait #FrontendDeveloper #WebDevelopment

🔑 Resetting State with key in React — A Simple but Powerful Pattern If you’ve ever tried to reset a component’s state in React and thought: “Why is this still holding onto old data?” — you’re not alone. Here’s the key insight 👇🏽 State belongs to a component instance, not the component itself. The common misconception Most developers think the key prop is only for lists. But key actually controls component identity. What really happens when key changes? When React sees a different key, it doesn’t just re-render. It: - Unmounts the old component - Discards its state - Creates a brand-new component instance - Initializes state from scratch In other words: a full reset. Why this matters Instead of: Manually resetting multiple useStates When this is especially useful ✅ Resetting forms after submission ✅ Switching between users or profiles ✅ Restarting multi-step flows ✅ Clearing deeply nested state The takeaway Using key to reset state is not a hack. It’s React working exactly as designed. Once you understand that changing the key means “new component”, your mental model becomes much clearer—and your code gets simpler. If React ever felt “stubborn” about resetting state, now you know why. Have you used this pattern before—or just learned it today? 👀 #React #FrontendDevelopment #JavaScript #WebDevelopment #LearningInPublic Adding complex useEffect logic Fighting leftover state

Understanding CRUD in React: The Real Connection Between useState, map(), and filter() When building any React project, especially a CRUD application, three things become your best friends: 🔹 useState() 🔹 map() method 🔹 filter() method But how are they connected? Let’s break it down. 👇 🧠 useState() – The Brain This stores and manages your data. Example: a list of tasks, users, products, etc. Without state, there is no dynamic UI. 📋 map() – The Display Engine (READ) When you want to show data on the screen, you use map(). It loops through your state array and renders each item dynamically. No map() → No dynamic rendering. ❌ filter() – The Cleaner (DELETE) When you delete an item, you don’t remove it manually. You filter it out and update the state with a new array. This keeps React immutable and predictable. React NEVER modifies the original array. It always creates a new array. That’s called 👉 immutability. UPDATE? We combine map() + useState() to modify specific items inside the array. CREATE? We add a new item into the state array using setState. So in simple terms: useState → Stores Data map() → Displays Data filter() → Removes Data Together, they form the core foundation of CRUD operations in React projects. Master the basics. The advanced stuff becomes easy. 💪 #ReactJS #WebDevelopment #FrontendDeveloper #JavaScript #LearningInPublic

Topic: Lifting State Up – The Secret to Syncing Components 🔼 Lifting State Up – The Secret to Syncing React Components Ever had two components that need the same data but their states go out of sync? 🤯 That’s where Lifting State Up saves you. 🔹 The Problem Two sibling components manage their own state → inconsistent UI. 🔹 The Solution Move the shared state to their closest common parent. const [value, setValue] = useState(""); Now the parent controls the data and passes it down as props 👇 ✔ Single source of truth ✔ Consistent UI ✔ Easier debugging 🔹 Real-World Example Search bar + Filter panel Both need the same query → keep state in parent. 💡 Golden Rule If multiple components need the same data, that state shouldn’t live in just one of them. 📌 React works best with unidirectional data flow. 📸 Daily React tips & visuals: 👉 https://lnkd.in/g7QgUPWX 💬 When did lifting state up finally “click” for you? 👍 Like | 🔁 Repost | 💭 Comment #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #ReactTips #DeveloperLife

🚀 7 Days of Better React – Day 2 Old Approach → Better Approach Faced a component recently that had too many nested conditions. ❌ Old approach: if (loading) { return <Loader />; } else { if (error) { return <Error />; } else { if (!data) { return <EmptyState />; } else { return <Dashboard data={data} />; } } } Hard to read. Hard to maintain. ✅ Better approach (Early Returns): if (loading) return <Loader />; if (error) return <Error />; if (!data) return <EmptyState />; return <Dashboard data={data} />; Cleaner logic. Easier to scale. Less mental overhead. Sometimes improving code isn’t about new libraries. It’s about simplifying flow. #reactjs #frontenddeveloper #cleanCode #javascript #webdevelopment

Over the past few years, I’ve worked on several React applications where state management started simple and gradually became complex. That’s where Redux Toolkit really made a difference for me. Instead of writing tons of boilerplate with action types, switch cases, and manual immutable updates, Redux Toolkit gives a clean and structured way to manage global state without unnecessary overhead. It truly feels like Redux done right. What I appreciate most is how practical it is in real projects. With createSlice, reducers and actions live together in one place, which keeps the code organized and readable. With createAsyncThunk and RTK Query, handling API calls, caching, and loading states becomes much more straightforward. It removes repetitive setup and allows you to focus on actual business logic instead of configuration. For larger applications such as dashboards, admin panels, or platforms where multiple components rely on shared state, Redux Toolkit brings predictability and structure. The architecture scales well, debugging with DevTools is simple, and TypeScript integration feels natural. It encourages good development patterns while still giving flexibility. I do not use it for every project. If an application is small and local component state is sufficient, React hooks are more than enough. But once state begins to span across multiple components and API interactions grow, Redux Toolkit becomes a reliable solution. State management can either simplify your application or slowly make it harder to maintain. In my experience, Redux Toolkit keeps things clean, organized, and scalable. #ReactJS #ReduxToolkit #FrontendDevelopment #WebDevelopment #JavaScript #TypeScript #CleanCode #DeveloperLife #CodingJourney #SoftwareEngineering #FullStackDeveloper #FrontendEngineer #WebAppDevelopment #ReactDeveloper #StateManagement #ModernWeb #UIEngineering #TechCommunity #CodeQuality #ScalableApplications #ProgrammingLife #SoftwareDeveloper #BuildInPublic

 🚀 Day 3/30: Why Doesn't My Variable Update? Hello, State! Today I hit my first real "React wall." 🧱 I tried to make a simple button that counts clicks. I used a regular JavaScript variable (let count = 0), and every time I clicked, the console showed the number going up. But on the screen? Nothing changed. The UI was stuck at 0. 🤯 The "Aha!" Moment: React needs a "Memory" I learned that React doesn't "watch" normal variables. If a value changes, React won't automatically re-render the UI unless you tell it to. Enter the useState Hook. 🎣 It’s like giving your component a memory. When you update a "State" variable, React says, "Oh! Something changed. Let me quickly re-paint the screen for the user." The Difference: Normal Variable: Changes the data, but the user sees nothing. State (useState): Changes the data AND triggers a UI refresh instantly. Check out the code snippet below to see how I finally got my counter working! 👇 💡 My Day 3 Takeaway In React, if you want the user to see a change, you must use State. Data and UI are now officially "in sync." 👇 Question for my connections: What was the first "Hook" you learned that made React finally click for you? Was it useState or something else? #ReactJS #WebDevelopment #Frontend #LearningInPublic #CodeNewbie #30DaysOfCode #30DaysOfReact

🚀 React Internals Series – Post #15 🗂️ React State Management Internals: Local State vs Global State Managing state is one of the most critical aspects of React applications. As applications grow, developers must decide where state should live and how it should be shared. Understanding the difference between local state and global state is key to building scalable React systems. --- 🧠 What is Local State? Local state belongs to a single component. Example: const [count, setCount] = useState(0); Scope: Component │ Local State │ Used only inside component Local state is ideal for: ✔ UI interactions ✔ Form inputs ✔ Toggle states ✔ Temporary values --- ⚙️ What is Global State? Global state is shared across multiple components. Example architecture: App ├─ Header ├─ Sidebar ├─ Dashboard └─ Profile If all components need user data, global state becomes useful. Global state can be managed using tools like Redux. --- 📦 State Propagation Problem Without global state, developers often face prop drilling. Example: App │ ▼ Dashboard │ ▼ Sidebar │ ▼ UserMenu Each component passes props down manually. This creates tight coupling between components. --- 📊 Global State Flow Typical global state architecture: Central State Store │ ▼ Components Subscribe │ ▼ State Updates Trigger Re-render Components read and update shared application state. --- ⚠️ Overusing Global State A common mistake is putting everything into global state. Problems: ❌ Hard to debug ❌ Complex state updates ❌ Performance overhead Example bad design: Global Store │ All UI states stored globally This reduces maintainability. --- 💡 Best Practices ✔ Keep UI state local ✔ Store shared data globally ✔ Avoid unnecessary global state ✔ Separate business logic from UI state A good rule: If only one component needs it → Local State If many components need it → Global State --- 📌 Key Insight React applications scale best when developers balance local state and global state, keeping UI logic simple while managing shared data efficiently. --- 💬 Next in the series: “React Event System Internals: How Synthetic Events Work” --- 🔖 Follow the React Internals Series #React #ReactJS #StateManagement #FrontendArchitecture #WebDevelopment #JavaScript #FrontendEngineering #Programming #SoftwareArchitecture #DeveloperSeries

𝗥𝗲𝗮𝗰𝘁 𝗖𝗼𝗻𝘁𝗲𝘅𝘁 𝗔𝗣𝗜 — 𝗨𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝘁𝗵𝗲 𝗖𝗼𝗿𝗲 𝗖𝗼𝗻𝗰𝗲𝗽𝘁 The Context API allows React applications to share data across components without passing props manually at every level. Instead of sending data step-by-step through the component tree, we create a context, wrap the application with a Provider, and any nested component can access that shared value directly using 𝘂𝘀𝗲𝗖𝗼𝗻𝘁𝗲𝘅𝘁. In the diagram I shared: 𝘈𝘱𝘱 → 𝘗𝘢𝘳𝘦𝘯𝘵 → 𝘊𝘩𝘪𝘭𝘥 → 𝘎𝘳𝘢𝘯𝘥𝘊𝘩𝘪𝘭𝘥 The orange arrows represent the normal component hierarchy. The green arrows show how the context value flows directly from the Provider in App to GrandChild. Even though Parent and Child are in between, they are not responsible for passing the data. That’s the core idea of Context API — centralized state sharing with cleaner architecture. #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment