Introduction: Why Learn React Without JSX? JSX is a fantastic syntactic sugar in React—but it’s not mandatory. In fact, JSX is just a transformation of React.createElement() calls under the hood. While JSX makes code easier …

Introduction: Why Learn React Without ES6? Most modern React tutorials rely heavily on ES6+ syntax—arrow functions, classes, let, const, destructuring, and more. But what if you're: Supporting legacy browsers? Working in an old codebase? Learning …

Introduction: Why React Portals Matter Ever tried building a modal, tooltip, or dropdown menu in React, only to battle with z-indexes, CSS overflows, or scroll clipping? That's because these UI elements often need to break …

Introduction: Why the React Profiler API Matters React is efficient by design, but as your app scales, even small performance issues can snowball—causing slow renders, laggy UI, and frustrated users. But how do you know …

Introduction: Why Optimizing React Performance Matters React is fast—but as your app grows in size and complexity, you might notice slow re-renders, sluggish UI, or memory bottlenecks. This is especially true in real-time apps, dashboards, …

Introduction: Why Integrating Other Libraries with React Matters While React excels at building interactive UIs through a component-based approach, many developers need to leverage third-party JavaScript libraries for tasks like DOM manipulation, charting, animations, maps, …

Introduction: Why Higher-Order Components in React Matter As your React app grows, you’ll likely need to reuse logic across multiple components—for things like authentication, theming, fetching data, tracking user behavior, or toggling UI states. You …

Introduction: Why React Fragments Matter In React, every component must return a single root element. That’s why you often see unnecessary <div> wrappers like: return ( <div> <h1>Hello</h1> <p>Welcome!</p> </div> ); These wrappers pollute your …

Introduction: Why React Forwarding Refs Matters In React, refs are powerful tools that let you directly access a DOM node or a React component instance. They’re commonly used for: Focusing an input Triggering animations Reading …

Introduction: Why React Error Boundaries Matter We’ve all encountered it: a single component throws an error, and the entire app crashes. In large React applications, this can be a serious user experience issue. While JavaScript’s …

Introduction: Why React Context Matters Managing state across components in React can get messy—especially when you have to pass data through multiple levels of nested components. This problem is called prop drilling and it can …

Introduction: Why Code Splitting in React Matters Modern React apps can grow fast — with hundreds of components, libraries, and assets. The problem? All this JavaScript gets bundled into a massive single file, which users …

Introduction: Why Accessibility in React Matters When building modern web applications, it's easy to focus on aesthetics and features while overlooking accessibility (often abbreviated as a11y). However, neglecting accessibility can make your app unusable for …

Introduction: Why React Custom Hooks Matter React provides built-in hooks like useState, useEffect, and useContext to manage state and side effects. But when your components start growing in size and logic becomes repetitive—copying and pasting …

Introduction: Why useMemo Matters in React React re-renders components frequently, which is usually fine. But when you have expensive calculations or heavy operations inside your component, it can lead to performance lags. Imagine running a …