21 results for "React"
Articles (20)
ReactJS
ReactJS Dev Tools
React DevTools helps developers inspect the component tree, props, state, hooks, and rendering behavior. It is one of the most important tools for diagnosing React applications. Components panel
ReactJS
Suspense
Suspense provides a boundary where React can show fallback UI while a supported child operation is not ready. It is commonly used for lazy-loaded components and can participate in modern React data-loading patterns depending on the framework and architecture.
ReactJS
Lazy loading
Lazy loading means delaying the loading of code or resources until they are needed. In React, React.lazy is commonly used to lazy-load components.
ReactJS
Accessibility a11y
Accessibility means building interfaces that people with different abilities can use. In React this includes semantic HTML, keyboard support, labels, focus management, accessible names, error announcements, and appropriate ARIA when native HTML cannot express the required behavior.
ReactJS
TypeScript with React
TypeScript gives React applications compile-time checks for props, state, API models, events, hooks, and reusable components. It is especially valuable in large teams because it makes contracts between components and services explicit.
ReactJS
XSS Prevention - Cross-Site Scripting
Cross-Site Scripting occurs when attacker-controlled content is interpreted as executable HTML or JavaScript in a user's browser. React escapes ordinary text rendering by default, but applications can reintroduce risk through unsafe HTML rendering, unsafe DOM APIs, third-party scripts, and insecure content handling.
ReactJS
Authentication & Authorization
Authentication identifies a user. Authorization determines what that user is permitted to do. A production React application normally handles authentication state, protected routes, session expiration, permission-based UI, and API authorization while relying on the backend as the security authority.
ReactJS
Error Boundries
Error Boundaries protect a React UI from certain rendering errors in descendant components. They let an application show a fallback screen instead of losing the entire visible application when a component throws during rendering.
ReactJS
Integration Testing
Integration testing verifies that multiple pieces work together. In React, an integration test might render a page with routing, Redux, form validation, and a mocked API, then perform a realistic user workflow from start to finish.
ReactJS
Component Testing — React Testing Library
React Testing Library focuses on testing components from the user's perspective. Instead of asking whether a specific internal function was called, the test asks whether the user can see text, click a button, enter data, and observe the expected result.
ReactJS
Unit Testing — Jest / Vitest
Unit testing verifies small pieces of application logic in isolation. In a React application this commonly means testing utility functions, reducers, selectors, validation rules, hooks, and business logic without rendering the complete application. A strong test suite checks behavior rather than implementation details.
ReactJS
API Integration — REST, Axios, Error Handling & Loading States
A production React application usually communicates with backend APIs. Good API integration is more than calling fetch or Axios.
ReactJS
Forms & Validation — React Hook Form + Validation
React Hook Form is a popular form-management library designed to simplify form state, validation, submission, and field registration.
ReactJS
State Management — Context API vs Redux Toolkit
React applications start with local component state, but larger applications often need shared state. Context API and Redux Toolkit solve different problems.
ReactJS
React Router — Routing & Protected Routes
React Router provides client-side routing for React applications. It lets users move between pages without performing a complete browser reload.
ReactJS
Render Props & Compound Components
Render Props and Compound Components are two important React composition patterns. Render Props focus on sharing behavior by allowing the consumer to provide a rendering function. Compound Components focus on creating a group of components that work together through shared state and context.
ReactJS
Higher-Order Components HOC
A Higher-Order Component is a React pattern for reusing component behavior. An HOC is a function that receives a component and returns another component with additional behavior.
ReactJS
Controlled vs Uncontrolled Components
Forms are one of the clearest places to understand the difference between React state and the DOM itself. In a controlled component, React state is the source of truth for the input value. In an uncontrolled component, the DOM keeps the current value and React reads it when required.
ReactJS
React.memo & Performance Optimization
React performance optimization is not about making every component memoized. The goal is to reduce expensive or unnecessary work when there is a measurable reason to do so.
ReactJS
Virtual DOM & React Fiber
The Virtual DOM and Fiber are related but they are not the same thing. The Virtual DOM describes React's in-memory representation of the UI, while Fiber is the internal architecture React uses to represent work, track component information, and schedule rendering work.
