React
React
React, developed and maintained by Facebook, is an open-source JavaScript library for building user interfaces, particularly single-page applications where the user interface needs to be highly dynamic. React follows a component-based architecture, allowing developers to create reusable UI components and efficiently manage the state of an application
- Component-Based Architecture:React encourages the creation of modular UI components, which are self-contained and can be reused throughout an application. Components encapsulate their own state and logic, making the codebase more maintainable and scalable.
- Virtual DOM:React uses a virtual DOM to optimize the updating of the actual DOM. Instead of directly manipulating the browser’s DOM for every change, React creates a virtual representation of it in memory and calculates the most efficient way to update the actual DOM.
- Declarative Syntax:React uses a declarative syntax, making it easier to understand and reason about the code. Developers describe what the UI should look like based on the application state, and React takes care of updating the DOM accordingly.
- JSX (JavaScript XML):JSX is a syntax extension for JavaScript that allows developers to write HTML-like code within JavaScript. It makes React components more readable and expressive. JSX is later transpiled into regular JavaScript.
- Unidirectional Data Flow:React follows a unidirectional data flow, where data changes in a one-way direction—from parent to child components. This helps maintain a predictable state and makes it easier to understand how changes propagate through the application.
- State and Props:React components can have state, which represents the internal data of a component. Props (short for properties) are used to pass data from a parent component to its children. Changes in state and props trigger updates to the UI.
- Lifecycle Methods:React components have lifecycle methods that allow developers to run code at specific points in the component’s lifecycle, such as when it is about to be rendered or when it has been updated.
- React Hooks:Introduced in React 16.8, hooks are functions that allow developers to use state and other React features in functional components.