Optimize React Native Lists with FlatList for Better Performance

JavaScript can only do one thing at a time. So how does it wait for data without freezing? That's where async/await comes in. → async before a function — it now returns a Promise → await pauses the function and waits for the result → Your app doesn't freeze — only that function waits → Always use try/catch — errors break your app silently without it → Two independent calls? Use Promise.all — don't await one by one → async/await is built on Promises — not a replacement Clean code. Easy to read. Fewer bugs. What part of async code confused you first? 👇 #javascript #asyncawait #webdevelopment #nodejs #programming #javascripttips #frontend #learnjavascript #100daysofcode

#State Vs #Props ---> who controls the data? In React, state and props are two core concepts. Both deal with data… but they don’t behave the same. 🟪State : 1. Used to manage data within a component 2. Can be changed over time (mutable via useState) 3. Handles dynamic data & user interactions 4. Any change in state =>> triggers re-render 🟧Props (short for properties) : 1. Used to pass data from parent to child 2. Read-only (child cannot modify it) 3. Mostly used for passing data 4. Changes in parent data =>> can cause re-render in child 🟨In short : State --> controlled inside the component Props --> controlled by the parent A small difference… but it defines how your UI behaves. 🔖 Save this for later if you're learning React. #ReactJS #FrontendDevelopment #WebDevelopment #JavaScript #ReactDeveloper #MERNStack #CodingJourney #LearnToCode #SoftwareDevelopment #TechLearning #Programming

🚀 6 React Hooks that changed how I write code — and will change yours too. If you're still confused about when to use what, here's the simplest breakdown: 🔵 useState → Store & update values. Every re-render starts here. 🌐 useEffect → Talk to the outside world (APIs, DOM, subscriptions). 📦 useRef → Hold a value WITHOUT triggering a re-render. A hidden drawer for your data. 🧠 useCallback → Memoize functions so they don't get recreated on every render. ⚡ useMemo → Cache expensive calculations. Only recompute when dependencies change. 🌍 useContext → Share state globally. No more prop drilling through 5 layers. The moment these clicked for me, my components became cleaner, faster, and way easier to debug. Which hook took you the longest to truly understand? Drop it in the comments 👇 #ReactJS #WebDevelopment #JavaScript #Frontend #Programming #React #SoftwareEngineering #100DaysOfCode #CodeNewbie #TechEducation #FrontendDeveloper #ReactHooks

🔥 JavaScript Tip That Changed How I Write Code Hey devs 👋 At some point, I realized… 👉 Most bugs were not because of logic… They were because of “unexpected values” Things like: ❌ undefined ❌ null ❌ NaN 💡 Example: const price = undefined; price + 10 // NaN 😬 💡 What I started doing: ✔ Defensive programming ✔ Optional chaining (?.) ✔ Nullish coalescing (??) Example: const total = price ?? 0; ⚡ Lesson: JavaScript is flexible… but that flexibility can break your app. 👉 Rule: “Always expect the unexpected.” What’s the weirdest JS bug you’ve faced? #javascript #webdevelopment #programming #frontend #backend #softwareengineering #Coding #TechCareers #Programming #success

Day 5 — Find Largest Number in an Array (JavaScript) Problem Write a function to find the largest number in an array. Example Input: [3, 7, 2, 9, 5] Output: 9 Approach Loop through the array and keep track of the maximum value. Code function findLargest(arr){ let max = arr[0] for(let i = 1; i < arr.length; i++){ if(arr[i] > max){ max = arr[i] } } return max } console.log(findLargest([3,7,2,9,5])) Alternative Approach function findLargest(arr){ return Math.max(...arr) } What I Learned How to track maximum value while iterating through an array. #javascript #frontenddeveloper #codingpractice #webdevelopment

JavaScript vs. TypeScript: The 'Cocomelon' Edition! Ever feel like your JavaScript code is a bit... chaotic? Like a toddler running around with no shoes? That’s where TypeScript comes in! Think of JavaScript as the fun, flexible playground where you can build anything quickly. It’s dynamic, it’s fast, but sometimes things get messy. TypeScript is like adding a 'Safety Helmet' and 'Rules' to that playground. It’s a superset of JavaScript that adds Static Typing. Why make the switch? Catch Bugs Early: Find errors while you type, not when the app crashes. Better Tooling: Enjoy super-powered autocompletion in VS Code. Scalability: It makes large projects much easier for teams to manage. Is your team Team JS or Team TS? Let's discuss below! #JavaScript #TypeScript #WebDevelopment #CodingLife #SoftwareEngineering #TechSimplified #Frontend #Programming

🪓 Brutal React Rule If your component needs: • 3 useEffects • 2 useMemos • 1 useCallback 👉 Your logic is broken. Not React. You don’t have a performance problem. You have a data flow problem. Most developers try to optimize symptoms instead of fixing the root cause. React isn’t slow. Your architecture is. — Write simpler components. Derive state. Think before adding hooks. Fix your data flow — performance follows. #ReactJS #WebDevelopment #FrontendDeveloper #JavaScript #Programming #SoftwareEngineering #CleanCode

Just shared a new article on Medium about React Custom Hooks! 🚀 As React developers, we often struggle with bloated components. Custom Hooks are a game-changer for extracting reusable logic and keeping our codebase DRY (Don't Repeat Yourself). In this article, I cover: ✅ What Custom Hooks are ✅ Building a reusable useFetch hook ✅ Best practices for clean code Check it out here: https://lnkd.in/g2Pp46As #ReactJS #WebDevelopment #JavaScript #Programming #Frontend #CodingTips

JavaScript: forEach() vs map() 🚀 A lot of developers confuse forEach() and map(), but they are not the same. Here’s the easy way to remember it: ✅ Use forEach() when you want to do something with each item • Logging data • Updating the UI • Calling an API • Running side effects It does not return a new array. ✅ Use map() when you want to transform each item • Changing values • Creating a new list • Rendering data in React It returns a new array. Simple rule: If you need a new array → use map() If you just need to loop through items → use forEach() Small choice, big impact on code clarity 💡 What do you use more often in your projects — forEach() or map()? 👇 #JavaScript #FrontendDevelopment #WebDevelopment #ReactJS #CodingTips #Programming #LearnJavaScript #100DaysOfCode #DevCommunity #SoftwareDevelopment #CodingLife #ReactDeveloper