React Memoization: When to Use React.memo

⚙️ 𝗥𝗲𝗮𝗰𝘁 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗧𝗶𝗽 #4: 𝗛𝗼𝘄 𝒖𝒔𝒆𝑫𝒆𝒇𝒆𝒓𝒓𝒆𝒅𝑽𝒂𝒍𝒖𝒆 𝗪𝗼𝗿𝗸𝘀 𝒖𝒔𝒆𝑫𝒆𝒇𝒆𝒓𝒓𝒆𝒅𝑽𝒂𝒍𝒖𝒆 creates a deferred version of a value that temporarily lags behind the latest state. Think of it as a two-step render process: 1️⃣ React renders immediately with the old deferred value 2️⃣ React schedules a background render with th. ae new value Example scenario: User types: "a" → "ab" React does this: • Input shows "ab" instantly • Result list still renders with "a" • Background render updates results later Result: ✅ Fast typing ✅ No UI blocking ✅ Smooth experience Another key detail: the background render is interruptible. If the user keeps typing, React cancels the previous work and restarts with the latest value. #React #JavaScript #FrontendPerformance #ReactHooks

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁 𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄? Every time a parent component re-renders, 𝗮𝗹𝗹 𝗼𝗳 𝗶𝘁𝘀 𝗰𝗵𝗶𝗹𝗱 𝗰𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁𝘀 𝗿𝗲-𝗿𝗲𝗻𝗱𝗲𝗿 𝘁𝗼𝗼 by default. Even if the child’s props didn’t change. 🔧 𝗛𝗼𝘄 𝘁𝗼 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗲: Wrap pure components with "React.memo" so they only re-render when their props actually change. This small optimization can significantly improve performance in large component trees. Smarter renders = faster UI. #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #PerformanceOptimization #SoftwareEngineering #CodingTips #FullstackDeveloper

🚀 Selecting DOM Elements with `querySelector` and `querySelectorAll` (JavaScript) The `querySelector` and `querySelectorAll` methods allow you to select DOM elements using CSS selectors. `querySelector` returns the first element that matches the specified selector, while `querySelectorAll` returns a NodeList containing all elements that match the selector. These methods are powerful tools for targeting specific elements within the DOM based on their tags, classes, IDs, or other attributes. Remember that `querySelectorAll` returns a static NodeList, so changes to the DOM after the initial selection won't be reflected in the NodeList. #JavaScript #WebDev #Frontend #JS #professional #career #development

"Great UI isn’t just about what users see — it’s about when things happen behind the scenes. Understanding the difference between useEffect and useLayoutEffect helps build smoother and more predictable React applications." 🚀 #React #FrontendDevelopment #JavaScript #WebDevelopment

Just shipped a React Virtual DOM Visualizer 🚀 I built this to make React rendering behavior easier to see instead of just explain. You can now: Compare Real DOM full re-renders vs Virtual DOM diffing side-by-side Run update patterns (single, random, range, all) Track commit duration with a benchmark timeline Toggle memoization and slow-motion to understand what changes and why Great for interviews, mentoring, and frontend performance learning. Try it here: https://lnkd.in/gGceydHz #React #NextJS #WebPerformance #Frontend #JavaScript #VirtualDOM #RealDOM #ReactVisualizer #UIEngineering

♻️ What is refactoring? It seems obvious, right? "Refactoring is the process of restructuring existing code to improve its readability, maintainability, or performance without changing its external behavior." Thanks, Chad. Improve its readability… what seems readable today is pure crap tomorrow. Do you have any guidelines for #NextJS projects? Or will it improve by just choosing one thing, sticking to it, and improving the process of improvement ( 😄 ) over time? How do I make sure that my adjustments are still relevant in a month and not just a waste of time and money? How do you approach refactoring in your #React or #NextJS projects? Let me know in the comments! #CleanCodeSolutions #WebDevelopment #JavaScript #TypeScript

Conditional rendering is one of the simplest ways to make React components actually reusable. You build a component… then reuse it somewhere else and realize it’s carrying extra UI you don’t need (In my case, I didn’t want the View button showing everywhere ) Instead of duplicating it, make parts optional: "showView && <ViewButton />" Control it with props. Same component, different behavior. Reusable components aren’t rigid They adapt. #ReactJS #Frontend #CleanCode #JavaScript

From building basic static pages to creating interactive 3D experiences with Next.js, Three.js, and Framer Motion A challenging but rewarding learning step. #WebDevelopment #FrontendDevelopment #ThreeJS #NextJS #FramerMotion #JavaScript #UIUX #WebDesign #SoftwareDevelopment #Coding

🚀 Iterators and Generators (JavaScript) Iterators provide a standardized way to access elements of a collection sequentially. Generators are special functions that can be paused and resumed, allowing you to create iterators easily. Generators use the `yield` keyword to return values one at a time. Iterators and generators are fundamental to the `for...of` loop and other iterable-based features. #JavaScript #WebDev #Frontend #JS #professional #career #development

🚀 The `Promise.race()` Method (JavaScript) `Promise.race()` takes an array of Promises and returns a single Promise that resolves or rejects as soon as one of the input Promises resolves or rejects. It effectively races the input Promises against each other, and the first one to settle determines the outcome of the resulting Promise. This can be useful in scenarios where you want to handle the first asynchronous result that becomes available. #JavaScript #WebDev #Frontend #JS #professional #career #development