React useEffect Explained: Managing Side Effects in Components

Closures look confusing at first, but the core idea is simple: A closure is when a function remembers variables from the scope where it was created, even after that outer function has finished running. That is why closures are so useful for private state, counters, factories, and callbacks. The infographic breaks it down visually: create a variable, return an inner function, and that inner function keeps access to the remembered value. If you understand this, a lot of JavaScript starts making more sense. What JavaScript concept should I simplify next? #JavaScript #Closures #WebDevelopment #FrontendDevelopment #Programming #LearnToCode #ReactJS #SoftwareEngineering

Why does the loading spinner sometimes never stop? No errors. No crash. Just spinning. It looks like a UI issue. But most of the time, it’s not. It’s an error handling problem. I wrote a simple breakdown of why this happens and how to fix it. Read here: https://lnkd.in/gPvF_iK7 #JavaScript #Frontend #Programming #WebDevelopment #SoftwareEngineering

💡 What is Event Parameter in React? When an event happens in React, React automatically passes an event object to the function. This event object gives details like: 👉 Which element triggered the event 👉 Input value 👉 Mouse position 👉 Prevent default behavior 📌 Example Uses: • Reading input values • Preventing form reload • Handling button clicks • Managing UI interactions ⚡ Event parameter helps you control user interactions precisely. Master this to write professional React logic. Follow TFSC for practical frontend learning. #reactjs #reactevents #javascript #frontenddevelopment #webdevelopment #coding #learnreact #programming #tfsc

Revisiting a simple but powerful JavaScript concept today: map() map() allows us to transform each element of an array and return a new array. Example: doubling numbers in an array. Small concepts like these form the foundation of writing cleaner and more functional JavaScript code. #JavaScript #WebDevelopment #FrontendDevelopment #Programming #CodingJourney #LearningInPublic

🚀 Day 10 – Writing Reusable React Hooks Custom hooks improve code reuse. Here are some strategies that consistently work in production 👇 ⚡ 1. Extract Shared Logic Move repetitive logic into hooks. ⚡ 2. Keep Hooks Focused Each hook should solve one problem. ⚡ 3. Follow Naming Convention Always start with "use". ⚡ 4. Avoid Side Effects Without Cleanup Always clean effects. ⚡ 5. Make Hooks Composable Combine hooks when needed. #React #programming #webdevelopment #reactjs  #coding #dailyUpdate #Developer 💻

React component lifecycle with hooks - yeh transition bahut smooth hai! Class components had lifecycle methods. Functional components with hooks achieve the same with: - useEffect for side effects - useLayoutEffect for synchronous effects - useMemo/useCallback for derived values useEffect runs after render. useLayoutEffect runs synchronously after DOM mutations but before paint. Use useLayoutEffect when you need to measure DOM or prevent flicker. Common patterns: - ComponentDidMount: useEffect with empty deps [] - ComponentDidUpdate: useEffect with deps - ComponentWillUnmount: cleanup function in useEffect But hooks are more flexible. You can have multiple effects, and they're easier to reason about. No more "this" binding issues! Hooks > Class components. Period! 🎯 #reactjs #webdevelopment #javascript #frontend #coding #reacthooks #lifecycle #programming #indiancoders #tech

🚀Code Splitting in React Large React bundles slow down initial load. Here are some strategies that consistently work in production 👇 ⚡ 1. Use React.lazy Load components only when needed. ⚡ 2. Use Suspense Show fallback UI during loading. ⚡ 3. Split Large Pages Lazy load routes. ⚡ 4. Avoid Huge Bundles Analyze bundle size regularly. ⚡ 5. Load Heavy Libraries Only When Needed Reduce initial load time. #React #programming #webdevelopment #reactjs  #coding #dailyUpdate #Developer 💻

Day 2- of Leetcode 30 days of javascript. Problem 2620 The problem statement was to return a function inside a parent function, and when the parent function is called, it should return in subsequent ascending +1 result. i,e n, n+1, n+2 for any value of n. This problem was based on closures and lexical scope of higher ordered function. There are many approach for this problem but I tried by setting a counter n - 1 and then incrementing it by 1, ie counter += 1. I am open to advice and please comment on how can I improve. #Leetcode #coding #javascript #Logic #growth #programming #higherorderfunction #closures #lexicalscope #scope

Ever wondered why JavaScript shows “undefined” even before a variable is assigned? 🤯 console.log(a); var a = 10; At first glance, this feels confusing… But the answer lies in one powerful concept: 👉 Execution Context Here’s what actually happens behind the scenes: ⚡ When JavaScript runs your code, it creates an Execution Context ⚡ In the memory phase, variables are hoisted → initialized as undefined ⚡ In the execution phase, code runs line by line and values get assigned I made a short video explaining the basics—would love your feedback 🙌 #javascript #webdevelopment #frontend #programming #coding #developers #learntocode #100daysofcode

30 Days JavaScript Challenge : Day 24 ✅ Today’s problem was about sorting an array using a custom function. Instead of directly sorting values, we use a function fn to decide the order — basically telling JavaScript how to compare elements. At first it feels simple, but it actually shows how powerful sorting can be when you control the logic: Sorting objects based on a property Sorting nested arrays Custom ranking based on conditions It’s one of those concepts that looks basic but is used everywhere in real projects. Slowly getting more clarity on how to write flexible and reusable logic in JavaScript. #javascript #leetcode #webdevelopment #frontenddeveloper #codingchallenge #learninginpublic #developers #programming #buildinpublic