Reactjs
Here's a brief overview of React and its key concepts:
Components: In React, you build user interfaces by creating reusable components. Components are like building blocks that encapsulate a piece of the user interface and its behavior. Each component can have its own state, properties (props), and lifecycle methods.
Virtual DOM: React uses a Virtual DOM to efficiently update the user interface. When there's a change in the application's state, React updates a virtual representation of the DOM first and then calculates the minimum number of actual DOM manipulations needed to reflect that change. This approach helps improve performance and responsiveness.
JSX: JSX (JavaScript XML) is a syntax extension for JavaScript that allows you to write HTML-like code within your JavaScript files. JSX makes it easier to describe how your UI should look and how it should behave.
State and Props: State represents the mutable data that belongs to a component. Props (short for properties) are used to pass data from a parent component to a child component. While state can change within a component, props are immutable.
Lifecycle Methods: React components have lifecycle methods that allow you to perform actions at specific points in a component's lifecycle, such as when it is mounted, updated, or unmounted.
Hooks: React introduced Hooks as a way to use state and other React features in functional components. Hooks allow you to write more concise and readable code by avoiding the complexities of class components.
Context: Context provides a way to pass data through the component tree without having to pass props down manually at every level. It's useful for sharing data that can be considered "global" for a tree of React components.
Redux: While not a part of React itself, Redux is a popular state management library often used with React. It provides a predictable way to manage application state, making it easier to manage complex state interactions.
Router: For handling navigation and routing within a React application, you can use libraries like react-router to manage different views and URLs.
Server-side Rendering (SSR) and Static Site Generation (SSG): React can be used for server-side rendering and static site generation with the help of frameworks like Next.js. SSR and SSG improve SEO, performance, and user experience