Iqra Technology

❮ Previous Next ❯ React Testing (Jest & React Testing Library) Testing in React ensures application stability and reliability. Jest and React Testing Library (RTL) are commonly used tools for writing unit and integration tests for React components. Setting Up Jest & React Testing Library Jest comes pre-installed with Create React App (CRA). If you

❮ Previous Next ❯ React Error Boundaries (Handling Component Errors) React Error Boundaries provide a way to catch JavaScript errors in the component tree, preventing the entire application from crashing. They work like a try-catch block but for React components, ensuring a smoother user experience. What Are Error Boundaries? Error Boundaries are React components that

❮ Previous Next ❯ React Portals & Refs (For Advanced DOM Manipulation) React provides Portals and Refs for advanced DOM manipulation. Portals allow rendering components outside the main React tree while preserving state and event behavior. Refs provide direct access to DOM elements or React components, enabling precise control over UI interactions. React Portals What

❮ Previous Next ❯ React Memo & Performance Optimization Performance optimization is crucial for building fast and efficient React applications. React provides several built-in tools such as React.memo, useMemo, useCallback, and virtualization techniques to minimize unnecessary re-renders and improve performance. Understanding React Re-Renders React automatically re-renders components when:✅ Their state or props change.✅ Their parent

❮ Previous Next ❯ React Custom Hooks React Custom Hooks allow you to extract reusable logic from components, making your code cleaner and more maintainable. They enable you to encapsulate functionality like fetching data, handling forms, or managing state across multiple components. Why Use Custom Hooks? ✅ Code Reusability: Avoid duplicate logic in multiple components.✅