React Hook Execution Order Explained

A React component is a function which returns JSX. When you use that component inside another component, the React creates an element. <Ali /> refers to element of Ali component. So, when React sees <Ali /> it gets it's JSX and internally call React.createElement with details of Ali component such as props, key and children. React.createElement creates an object which is basically description of what needs to be rendered. Then React adds that to the virtual DOM and gets added to real DOM. Tried my best to simplify this concept. Thinking of writing a blog on it. You can subscribe to my newsletter to read in-depth. link in comment. #react #javascript #frontend #programming

3 React hooks you should use more often: 🔹 useMemo Caches expensive calculations. Recalculates only when dependencies change. 🔹 useCallback Caches a function reference. Prevents unnecessary re-renders in child components. 🔹 useReducer Better than useState for complex state logic. Think of it as a mini Redux. Most devs only use useState and useEffect. The ones above can make a real difference. 🎯 #ReactJS #Frontend #JavaScript #WebDev #Programming

React feels fast because it usually updates only what changed. That is reconciliation. When state changes, React creates a new Virtual DOM tree, compares it with the previous one, finds the difference, and updates only the affected part of the real DOM. That is the reason React apps can stay efficient without you manually touching every DOM node. The infographic shows the full flow step by step, from state change to browser repaint. What React concept should I simplify next? #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #VirtualDOM #Programming #SoftwareEngineering 

🧠 If you're overusing "useEffect", you're probably doing it wrong. This hook is powerful — but also one of the most misused things in React. Here’s what I see often 👇 ❌ Missing dependency array → unexpected behavior ❌ Adding everything to dependencies → infinite loops ❌ Using useEffect for derived state → unnecessary complexity ✅ Use it only for side effects: - API calls - Subscriptions - DOM interactions --- 💡 Rule of thumb: “If it can be calculated during render, don’t use useEffect.” --- 👀 Let’s discuss: 👉 What’s the most confusing part of useEffect for you? 👉 Have you ever debugged an infinite loop issue? 😅 Drop your thoughts 👇 #ReactJS #Frontend #JavaScript #WebDev #Programming

🚀 Understanding React Reconciliation Many developers ignore how React updates the DOM. Here are some strategies that consistently work in production 👇 ⚡ 1. Know Virtual DOM Concept React compares previous and new UI efficiently. ⚡ 2. Use Stable Keys Helps React identify changes correctly. ⚡ 3. Avoid Unnecessary DOM Changes Keep structure stable. ⚡ 4. Minimize Tree Depth Shallow trees are faster to diff. ⚡ 5. Optimize Conditional Rendering Avoid frequent mount/unmount cycles. #React #programming #webdevelopment #reactjs  #coding #dailyUpdate #Developer 💻

Building My Own Reusable Star Rating Component in React As part of my journey learning React, I decided to stop relying on external npm packages for simple UI features (For security and Reliability reasons) and instead build them from scratch. One of the components I built recently is a fully reusable Star Rating component Features I implemented: - Configurable number of stars (max) - Controlled and uncontrolled rating support - Click interaction to set rating - Custom colors support (border, fill, shadow) - Reset / clear rating option - Callback function triggered when the user selects a rating, passing the updated rating value as an argument , this is helpfull for external handling (e.g: state sync with parent components) - Fully reusable design #React #JavaScript #FrontendDevelopment #WebDevelopment #LearningInPublic #Programming #UI #CleanCode

Ever seen: “Warning: Text content did not match. Server: … Client: …” That’s hydration mismatch. Server-rendered HTML doesn’t match what React renders on the client. Common causes: Using window/document directly Client-only conditional rendering DOM-manipulating libraries Tip: Use useEffect or dynamic imports (ssr: false) for client-only code. Hydration issues are subtle—but they can break your UI in production! #NextJS #ReactJS #WebDevelopment #Frontend #JavaScript #Programming #TechTips #WebDev

🧠 JavaScript Closures (without overcomplicating it) Most developers use them… few actually understand them. A closure is when a function “remembers” the variables from where it was created, even after that scope is gone. Simple idea: You create a function inside another one The inner function still has access to the outer variables Even after the outer function has finished executing 👉 Sounds simple, but this unlocks powerful patterns. Now here’s the real insight: If you use React, you rely on this EVERY SINGLE DAY. Hooks like useState and useEffect are built on top of closures. That’s how React “remembers” state between renders Without using classes So in practice: 👉 Understanding closures = understanding React at a deeper level #javascript #reactjs #frontend #webdevelopment #programming

🚀 React Series - Day 10 Avoiding Unnecessary Re-renders with React.memo As applications grow, performance becomes more important. One common issue is unnecessary re-rendering of components. This is where React.memo helps. It is a higher-order component that memoizes a component - meaning it will only re-render if its props actually change. If the props remain the same, React skips rendering that component, improving performance. 👉 This is especially useful for components that: • Receive the same props frequently • Are part of large or complex UIs Used correctly, it can make applications faster and more efficient. #reactjs #javascript #frontenddeveloper #webdevelopment #codinginterview #learnreact #30daysofcode #programming #reactinterview #react #coding

💡 What is Ternary Operator in React? The ternary operator is used for conditional rendering in React. 👉 Syntax: condition ? trueValue : falseValue 📌 Example Use Cases: • Show / hide elements • Login / Logout button • Loading states • Toggle UI 📌 Why use it? • Cleaner than if-else • Inline rendering • Easy to read ⚡ Helps you write dynamic UI logic directly in JSX. Master this to build smart React interfaces. Follow TFSC for practical frontend learning. #reactjs #ternaryoperator #frontenddevelopment #javascript #webdevelopment #coding #learnreact #programming #tfsc