How to Master Node.js: A Book on Design Patterns

If you want to understand Node.js better than 99% of the folks, check this book out. It's Node.js design patterns, but it's more than just design patterns. The book will help you learns Node.js concepts at advanced levels. Why does a piece of code behave the way it behaves, and what happens under the hood? It covers most of the topics and modules we use daily, such as 1. module system, 2. callbacks and events, 3. async control flows, 4. design and architectural patterns, 5. scalability and more. Highly recommended. Excellent work by 🦁 Luciano Mammino and Mario Casciaro #nodejs #javascript #backend

Efficiency & Modern Standards Centering a div used to be the subject of a thousand memes. But CSS has evolved, and so should our methods! While Flexbox is still a workhorse, the modern approach using CSS Grid is incredibly clean and efficient. Forget three lines of code. Now, you can achieve perfect horizontal and vertical centering with just one line on the parent container: "CSS place-items: center;" It's an instant win for code readability and maintainability. In modern frontend development with frameworks like React and Next.js, small efficiencies like this add up to a significant impact on your overall codebase. Stay current, write less, and ship faster. Follow Abir Mahmud for more modern CSS and clean code tips! #CSS #Frontend #WebDevelopment #ReactJS #NextJS #CleanCode #CodewithAbir

This foundational front-end languages such as HTML, CSS, JavaScript and TypeScript, along with major frameworks like React, Angular, Vue and Svelte. It also discusses essential build tools and UI libraries including Webpack, Vite, Tailwind CSS and Bootstrap. It outlines how to pick the right stack depending on project size, team skills and growth plans, and presents trends such as headless CMS, component-driven architecture and performance optimisation. 🔗 www.wedowebapps.com #FrontEndDevelopment #WebDevelopment #JavaScript #HTML #CSS #ReactJS

We all love reusable code — until we try to actually reuse it. Both Angular and React promise reusability, but how they deliver it couldn’t be more different. In Angular, reusability comes from structure — modules, services, and pipes that fit together like prefab homes. In React, reusability comes from flexibility — you craft components, hooks, and utilities however you want, like a carpenter shaping each piece by hand. Neither is wrong — it’s just a question of how you like to build. So what’s your style? Framework-driven consistency or developer-driven creativity? #Angular #React #CodeReusability #WebDevelopment #FrontendEngineering #JavaScript #TypeScript #WebArchitecture #CleanCode #SoftwareDesign #Angular16 #ReactJS #FrontendFrameworks #BuildBetter #DeveloperExperience #TechThoughts #WebDevCommunity

💡 The DOM Isn’t Part of JavaScript — and That Changes Everything Most developers think the DOM is JavaScript. It’s not. The DOM (Document Object Model) is actually a browser API — a separate interface the JS engine talks to when you manipulate elements on the page. Every time you call document.querySelector() element.style.color = "red" you’re crossing a bridge between two worlds: The JS engine (like V8 or SpiderMonkey) The browser’s rendering engine (like Blink or WebKit) That bridge is slow compared to in-memory JS operations — because you’re leaving the JS runtime, entering the browser’s C++ layer, and waiting for layout or paint updates. This is why modern frameworks like React, Vue, and Svelte use virtual DOMs or compile-time updates: they batch DOM changes to minimize those costly bridge crossings. Understanding this changes how you code: ✅ Batch DOM updates together ✅ Use requestAnimationFrame() for smoother rendering ✅ Leverage document.createDocumentFragment() to avoid unnecessary reflows The DOM was never designed for high-frequency mutations — but once you know what’s really happening behind the scenes, you can make the browser work with you, not against you. 💬 What’s one browser internals insight that changed how you write frontend code? #WebPerformance #FrontendEngineering #JavaScript #SystemDesign #React #WebDev #PerformanceMatters

I used to always hear people say “React’s key prop helps React tell elements apart.” I kind of understood it… but it always felt like a vague explanation. Then I thought about how we do things in plain JavaScript. When you dynamically render elements in the DOM, you usually have to give each one a unique id or data-id — so you can update or delete that specific element later. That’s basically what React is doing behind the scenes with the key prop. It uses key to know which list items match between renders, so it can update, move, or remove elements without re-creating everything. So this: {items.map(item => <li key={item.id}>{item.name}</li>)} is kind of the React equivalent of this: li.dataset.id = item.id; Once I connected it to how we handle things in pure JS, the whole “key” concept suddenly made perfect sense 😄 #javascript #reactjs #frontend #webdevelopment

🚀 React Day 2 — The Power of { Curly Braces } ⚛️ Unlike plain HTML (which just sits there), React lets your UI breathe with live data. ✨ In JSX, we use { curly braces } to bring JavaScript to life inside your markup. ✅ Display dynamic values — strings, numbers, and variables ✅ Make attributes flexible and data-driven ✅ Style elements using JS objects wrapped in braces 🧠 Think of it like this: HTML = static photo React JSX = live video with JS controlling every frame 🎥 #React #JavaScript #Frontend #WebDevelopment #LearnReact

Ever heard the term Closure and wondered what it actually does? It's often described as a tricky concept, but it's really the superpower that makes modern JavaScript and React development possible. In simple terms, a closure is a function that "remembers" its outer scope's variables even after that outer function has finished executing. The inner function literally closes over, or captures, those variables. This allows data to be private and persistent. Why does this matter for Frontend Engineering? It's how hooks work! When you use the useState or useReducer hooks in React, the hook's returned functions form a closure over the state value in the functional component's rendering scope. Without closures, functional components couldn't reliably hold state between renders. Slide to See the Code Snippet ➡️ What's a JavaScript feature or pattern you rely on daily that you realized was powered by closures? #JavaScript #FrontendEngineer #TypeScript #ReactJS #CodingFundamentals #Closures

I built a new styling library specifically for React Native! I love styled-components, but the runtime overhead always bothered me. So I made "kstyled" - it compiles styles at build time using Babel, giving you zero runtime cost while keeping the familiar API. Key highlights: ✅ Zero runtime overhead (compiles to StyleSheet.create) ✅ Same syntax as styled-components ✅ Smaller bundle (~10KB vs 13-21KB) ✅ 8-15% faster rendering (more for complex components) ✅ Full TypeScript support ⚠️ Note: kstyled is still in beta, so there might be some edge cases left to iron out. I’ve been using it in my own apps and have been really happy with the performance so far! Quick example: ```tsx import { styled } from 'kstyled'; const Button = styled.Pressable<{ $primary?: boolean }>`  padding: 16px 32px;  border-radius: 8px;  background-color: ${p => p.$primary ? '#007AFF' : '#ccc'}; `; ``` If you're already using styled-components or emotion, migration is super easy! Docs: https://lnkd.in/g7px3xwT GitHub: https://lnkd.in/gtMP8csA #ReactNative #JavaScript #TypeScript #OpenSource #MobileDevelopment

In React, why does changing the ref value not trigger multiple re-renders? Let's discuss what happens under the hood in React. 1. React initializes the ref object with initialValue defined in the code. 2. The ref object is saved in the memoizeState property of the hook node in the linked list of hooks. 3. The hooks linked list is internally managed by React with the order in which we define hooks in the component's code. 4. If useRef is the first hook, its data will get saved on memoizedState property of an internal structure called currentlyRenderingFiber which refers to the fiber node of the component currently being rendered. 5. Otherwise, the work-in-progress pointer will add useRef to the hooks linked list as per the order of the hooks in the code. 6. WorkInProgress is an internal pointer to traverse the hooks linked list, add a new hook during the first render, or reuse/clone existing ones during re-rendering. 7. React maintains hooks in a linked list so that the order of hooks doesn't get changed. When rerender happens 1. The React updateRef method is called internally, and the WorkInProgress pointer traverses through the hooks linked list, finds, and returns the same memoizedState node against which ref was initially defined. Points no. 4, 5, and 6 might feel quite overwhelming; I will discuss these in the coming days. I do a deep dive into foundational concepts & how things work under the hood. You can consider connecting with or following me, Ali Raza, to get along with the journey. #react #javascript #frontend #nextjs