ReactJS Tutorial for beginners in just 3 minutes | Getting started with React - @code_pirate

ReactJS is a JavaScript library that is widely used for building dynamic user interfaces for web applications. It is particularly popular because it allows developers to build reusable and maintainable code through a component-based architecture.

In ReactJS, a component is a modular, self-contained unit of code that contains a combination of HTML, CSS, and JavaScript. Components can be thought of as building blocks that can be combined to create more complex interfaces. Components can be reused across different parts of an application, making it easier to maintain and update the code.

To add interactivity to a component, developers can use the useState hook. This hook allows developers to add state to a component, which means they can store and update data that can be used in the component and its children. State can be used to handle user input, control the rendering of components, and much more.

In addition to the useState hook, ReactJS also provides a useEffect hook that is used to run side effects in a component. Side effects are actions that are performed outside of the component, such as fetching data from a server or updating the DOM. The useEffect hook can be used to manage side effects in a clean and organized way.

ReactJS also provides a useContext hook that allows developers to share data across components without having to pass props down through every level of the component tree. This can be particularly useful for managing global data, such as a user's authentication status or the theme of the application.

To add routing to a ReactJS application, developers can use the react-router-dom library. This library provides a BrowserRouter component that wraps the application and allows developers to define routes and render components based on the current URL. Routes are defined using the Route component from the react-router-dom library, and can be set up to render a specific component based on the current URL.

Overall, ReactJS is a powerful and flexible library that provides developers with a wide range of tools and features for building dynamic and interactive web applications. The combination of components, hooks, and routing makes it easy to create complex applications with clean and organized code.