React Prefers Arrow Functions for Predictable Behavior

DAY 19 OF POSTING REACT CONTENT ⚛️ WHAT DOES async REALLY DO? 🤔 When we add async before a function, we are telling JavaScript: 👉 “This function will return a Promise.” Even if we return a normal value, JavaScript automatically wraps it inside a Promise. So: async does not pause anything. It just prepares the function to work with asynchronous tasks. #ReactJS #JavaScript #AsyncJavaScript #Promises #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney

DAY 16 OF POSTING REACT CONTENT ⚛️ React didn’t start with Hooks. Earlier, React components were written using classes. They worked, but understanding this, lifecycle methods, and structure took time. In 2018, React introduced Hooks. Hooks allowed developers to write components as simple functions, manage state without classes, and avoid this completely. Classes are still supported. But Hooks became the preferred way because they made React easier to read, write, and maintain. React didn’t remove classes — it just found a simpler way forward. #ReactJS #ReactBasics #JavaScript #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁 𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄? In React, 𝘀𝘁𝗮𝘁𝗲 𝘂𝗽𝗱𝗮𝘁𝗲𝘀 𝗶𝗻𝘀𝗶𝗱𝗲 𝗲𝘃𝗲𝗻𝘁 𝗵𝗮𝗻𝗱𝗹𝗲𝗿𝘀 𝗮𝗿𝗲 𝗯𝗮𝘁𝗰𝗵𝗲𝗱, meaning multiple "setState" calls may result in a 𝘀𝗶𝗻𝗴𝗹𝗲 𝗿𝗲-𝗿𝗲𝗻𝗱𝗲𝗿. Why it matters: - Improves performance automatically - Explains why consecutive state updates don’t always update immediately - Encourages writing state updates that depend on previous state using the functional form Understanding batching helps you write more predictable React code. #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #SoftwareEngineering #CodingTips #PerformanceOptimization #FullstackDeveloper

DAY 20 OF POSTING REACT CONTENT ⚛️ WHAT DOES await REALLY DO? 🤔 await tells JavaScript: 👉 “Wait here until the Promise finishes.” It pauses the function until the result is ready. Example: async function getData() { const data = await fetchData(); console.log(data); } The code waits for fetchData() before moving to the next line. Cleaner than .then() Easier to read Same result #ReactJS #JavaScript #AsyncAwait #Promises #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney

DAY 17 OF POSTING REACT CONTENT ⚛️ HOW DOES REACT USE CODE FROM ONE FILE IN ANOTHER? 🤔 In React, each component usually lives in its own file. To use a component somewhere else, JavaScript provides two simple tools: 👉 export — to make something available 👉 import — to use it in another file This keeps code: organized reusable easy to manage React doesn’t work without this. Every component connection starts here. #ReactJS #JavaScript #ReactBasics #FrontendDevelopment #LearnInPublic #WebDevelopment #CodingJourney

Day 32 of Posting React Content 🧠 What is useCallback? 🎓 Imagine This You enter your college every day. The security guard checks your ID card. You don't explain who you are every time. You just show the same ID card. 💡 In React Sometimes a parent component sends a function to a child component. When React renders again, that function gets created again and again. useCallback prevents this. It keeps the same function and reuses it until something changes. ✨ One Line Understanding Normal React → function recreated every render useCallback → same function reused #ReactJS #ReactHooks #useCallback #FrontendDevelopment #JavaScript #LearnInPublic #CodingJourney #WebDevelopment

useEffect is one of the most misunderstood hooks in React. Most bugs I’ve seen weren’t because React is complex — they were because the mental model was wrong. Here’s a practical breakdown with real examples. Day 2/100 — sharing practical frontend engineering lessons from real-world projects. What’s the most confusing useEffect bug you’ve faced? #ReactJS #FrontendEngineering #JavaScript #WebPerformance #SoftwareArchitecture

Day 29 of Posting React Content 📌 What Is useRef? 🧠 Imagine This You’re studying. You keep a small sticky note beside you. On that note, you write: “Revise React at 7 PM.” That note: 📝 Stores information 📝 Stays there 📝 Doesn’t disturb your study 📝 Doesn’t restart your work It just sits quietly. 💡 In React Sometimes you need something that: 📌 Stores a value 📌 Stays between renders 📌 Does NOT cause the screen to update That’s what useRef does. It’s like a sticky note inside your component. You can: ✨ Store a value ✨ Access a DOM element ✨ Focus an input ✨ Track previous values And React will NOT re-render because of it. One Clear Difference useState → changes UI when updated useRef → stores value silently #ReactJS #ReactHooks #useRef #FrontendDevelopment #JavaScript #ReactInterview #LearnInPublic #CodingJourney

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁 𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄? In React, 𝗱𝗲𝗿𝗶𝘃𝗲𝗱 𝘀𝘁𝗮𝘁𝗲 𝗶𝘀 𝗼𝗳𝘁𝗲𝗻 𝘂𝗻𝗻𝗲𝗰𝗲𝘀𝘀𝗮𝗿𝘆. If a value can be calculated from props or other state, you usually don’t need to store it in "useState". Just compute it during render. Why this matters: - Avoids state synchronization bugs - Reduces complexity - Keeps components predictable 🔧 𝗥𝘂𝗹𝗲 𝗼𝗳 𝘁𝗵𝘂𝗺𝗯: If you can calculate it, don’t store it. Less state = fewer bugs. #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #SoftwareEngineering #CodingTips #CleanCode #FullstackDeveloper

Built a Dice Roll UI using React 🎲 A small project focused on component structure, state handling, and interactive UI behavior. Learning by building — one project at a time. Git Hub Link:https://lnkd.in/gJQUqAWp #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #BuildInPublic