Muhammad Saad Naseem’s Post

🚀 Day 19/30 – JavaScript Challenge Solved: 2721. Execute Asynchronous Functions in Parallel 💡 Today’s concept: Promise.all (Parallel Execution) We were given multiple async functions and needed to execute them in parallel, not one by one. 👉 Key Idea: Start all async functions at once Track results in order Resolve only when all are completed Reject immediately if any fails ⚙️ Approach: ✔ Create a result array ✔ Maintain a counter ✔ Call all functions simultaneously ✔ Store results by index ✔ Resolve when count matches length #JavaScript #AsyncProgramming #Promises #LeetCode #WebDevelopment #Frontend

React Tip: Use Functional Updates When new state depends on previous state: javascript // Wrong way setCount(count + 1); // Right way setCount(prevCount => prevCount + 1); Why? React batches updates. Functional updates ensure you always have the latest value. #ReactJS #FrontendDeveloper #CodingTips

JavaScript Event Loop The event loop is a system that decides: - What code runs now - What runs later 👉 Sync → Microtasks(Promise.then, async/await) → Macrotasks(setTimeout, setInterval) Example below: A F H C E G D B 🎯 If you understand WHY this happens, you really understand the event loop. #javascript #webdev #frontend #async

🚀 JavaScript Output Challenge #5 (Hoisting Trap) Looks simple… but is it really? 👀 🧠 Question: 👉 What will be printed in the console? ⚠️ Don’t run the code. Try to think about: Hoisting Function declaration vs variable declaration Execution context 🤔 Bonus: Why does JavaScript behave this way internally? 💬 Drop your output + reasoning in comments Let’s see who understands JavaScript deeply 🔥 📌 Detailed explanation coming soon... #javascript #webdevelopment #frontend #codingchallenge #reactjs #nodejs

Day 106 / 365 👨💻 Continued with React practice. 🧩 Revisited component structure 🔁 Practiced state updates in small examples ⚙️ Improved code organization 🧠 Focused on getting comfortable with the flow #365DaysOfCode #React #JavaScript #Frontend

What are Hooks? Hooks are special functions that allow you to use state and lifecycle features inside functional components. 🔹 useState 🧩 Manage and update component data easily without class components. 🔹 useEffect 🔄 Handle side effects like API calls, DOM updates, and subscriptions. 🔹 Why Hooks Matter? ⚡ Cleaner and shorter code 🔁 Reusable logic across components 🚀 Better readability and maintainability #ReactHooks #ReactJS #JavaScript #FrontendDev

Have you ever hit the “why is my input resetting on every render?” bug?  ➤ Defining a component function inside another component creates a new function on every render 🔄🧠 ➤ React can treat it like a different component type 🎭❓ ➤ Result: inputs/state can reset repeatedly 🔁⚠️ ➤ Fix: define components at the top level (outside the parent component) 🔝✅ #React #JavaScript #Frontend #Debugging #BestPractices

Stop overcomplicating Full-stack TypeScript with tRPC — end-to-end type safety. I've reviewed hundreds of implementations. The best ones? Dead simple. The pattern: - Start with the boring solution - Measure actual bottlenecks - Only then add complexity Premature optimization is real, and it kills projects. What's the simplest solution you've shipped that just worked? #WebDevelopment #TypeScript #Frontend #JavaScript

𝑪𝒓𝒆𝒂𝒕𝒊𝒏𝒈 𝒂 𝑹𝒆𝒂𝒄𝒕 𝒑𝒂𝒄𝒌𝒂𝒈𝒆 𝒔𝒐𝒖𝒏𝒅𝒔 𝒉𝒂𝒓𝒅𝒆𝒓 𝒕𝒉𝒂𝒏 𝒊𝒕 𝒊𝒔… 𝒖𝒏𝒕𝒊𝒍 𝒚𝒐𝒖 𝒐𝒗𝒆𝒓𝒄𝒐𝒎𝒑𝒍𝒊𝒄𝒂𝒕𝒆 𝒊𝒕. A few things that helped me: - Start with one reusable component, not a full library - Use Vite for fast setup - Test it locally with npm link before publishing Simple > perfect. How are you structuring your packages? #reactjs #javascript #webdev #frontend #opensource

Svelte vs Traditional Frameworks Most frameworks push heavy work to the browser, increasing runtime cost and slowing down performance. Svelte takes a different approach — it shifts that work to compile time, producing highly optimized vanilla JavaScript. The result: faster load times, smoother runtime performance, and minimal browser overhead. Sometimes, the best optimization is doing less in the browser.   #Svelte #WebDevelopment #JavaScript #Frontend #WebPerformance #SoftwareEngineering #Ziplink