setTimeout State Issues in ReactJS

Today I want to share an amazing React feature that many developers don't know about. It allows you to create components using a class instead of a function. This gives you access to powerful tools like lifecycle methods, this.state, and this.setState(). 2026 is the new 2016 🤣 #React #JavaScript #Frontend #WebDevelopment #SoftwareEngineering

frameworks and libraries is all about syntax, the real deal is knowing what powers them... useEffect and useState are dangerous syntax to someone who doesn't understand how window loaded and DomContent event listeners work in pure javaScript... Axios is great but if you dont know how the fetch API works, the you would struggle to undertstand how the browser handles http errors... Knowing the fundamentals isn't about going back to the stone age, its what you need to build with confidence. #reactjs #frontend #javaScript

Why does this log 1, not 2? Most people say: “Because React batches updates.” That’s only half the story. The real reason? Stale closures. Inside this render, count is 0. Both setCount(count + 1) calls use that same captured value. So React receives: 1) set to 1 2) set to 1 Not: 1) set to 1 2) set to 2 This question isn’t about memorizing hooks. It tests whether you understand how React renders create new function scopes — and how state updates are queued. #react #javascript #frontend

Most performance issues come down to one thing: Unnecessary Re-renders. React is fast, but it’s not magic. If you don't manage how and when your components update, your DOM will pay the price. In this carousel, I break down: The 4 core triggers of a re-render. The 'Waterfall Effect' in parent-child relationships. How to stabilize your code using professional patterns." #ReactJS #WebDevelopment #JavaScript #FrontendPerformance #MERNStack #ReactHooks #ZhairAhmad #SoftwareEngineering

Built a Password Generator using React while learning React Hooks in depth. Worked with useState, useEffect, useCallback, and useRef to understand state management, DOM access, and performance optimization in a practical way. #ReactJS #WebDevelopment #Frontend #LearningInPublic #JavaScript

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁 𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄? Keys in React are 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 𝗳𝗼𝗿 𝗿𝗲𝗺𝗼𝘃𝗶𝗻𝗴 𝘄𝗮𝗿𝗻𝗶𝗻𝗴𝘀 — they control how React 𝗶𝗱𝗲𝗻𝘁𝗶𝗳𝗶𝗲𝘀 𝗮𝗻𝗱 𝗿𝗲𝘂𝘀𝗲𝘀 𝗲𝗹𝗲𝗺𝗲𝗻𝘁𝘀. Using unstable keys (like array indexes in dynamic lists) can cause: - Broken animations - Lost input focus - Incorrect component state 🔧 𝗕𝗲𝘀𝘁 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗲: Always use 𝘀𝘁𝗮𝗯𝗹𝗲, 𝘂𝗻𝗶𝗾𝘂𝗲 𝗜𝗗𝘀 from your data whenever possible. Good keys = predictable UI behavior. #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #SoftwareEngineering #CodingTips #BestPractices #FullstackDeveloper

🔁 useState vs useReducer — when does structure actually matter? Simple state? useState gets the job done. Complex logic with rules? useReducer keeps things organized and predictable. Swipe through and see the difference in practice 👉 #ReactJS #JavaScript #WebDev #Frontend

After talking about useMemo, it’s hard not to mention useCallback. I often see it added everywhere as a “performance fix”, even when there’s no real problem to solve. useCallback is useful when function identity actually matters, usually when passing callbacks to memoized components or dependency arrays. In many cases, it just adds noise and makes the code harder to read. As with most things in React, clarity should come first. Optimization should be intentional, not automatic. #React #JavaScript #Frontend #SoftwareEngineering

🚀 React Hands-on Series #4 ⏳ Problem Statement: Debounced Search Input Ever noticed how search bars don’t fire on every keystroke? That’s called debouncing — and today you’re building it. 🎯 Your Task: Create a search input with the following behavior: ✅ Input field ✅ User types normally ✅ Show the typed value only after 1000ms delay #React #FrontendDevelopment #JavaScript #PerformanceOptimization #BuildInPublic #ReactJS #CodingChallenge

4 Smart Ways to Manage Conditional Rendering in React! Here’s a clear and practical overview of popular approaches to conditional rendering in React: ✅ If-Else – Straightforward and traditional ✅ Ternary Operator – Clean inline decision-making ✅ Logical && – Concise short-circuit rendering ✅ Switch-Case – Perfect for handling multiple states Swipe 👉 to explore each approach and choose what fits your use case best! Which approach do you prefer? Drop your answer below! ⬇️ #ReactJS #WebDevelopment #Frontend #CodingTips #JavaScript