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React is a JavaScript library that helps developers build user interfaces. One of the key concepts in React is the component. Components are the building blocks of a React application and they allow you to break down your user interface into smaller, reusable pieces. This makes it easier to manage your code and allows you to create complex UIs with ease.
There are two types of components in React: functional components and class components.
Functional components are simple JavaScript functions that return React elements. They are often used to display small, simple pieces of the UI, such as a button or a header.
Class components, on the other hand, are more powerful and allow you to use lifecycle methods and state. Lifecycle methods are special methods that are called at specific points in a component’s lifecycle, such as when it’s first rendered or when it’s about to be updated. State, on the other hand, is a way to store data that can change over time and influence how a component is rendered.
React components can also receive data from their parent components in the form of props. Props are data that are passed to a component from its parent component. This allows components to be reusable and makes it easy to share data between components.
When you create a component, it’s a good idea to think about how it will be used and what data it will need. This will help you determine what type of component to create, whether it’s a functional component or a class component, and what props it will need to receive.
Overall, components are a critical part of building a React application and they allow you to break down your user interface into smaller, manageable pieces. Whether you’re building a simple component or a complex UI, understanding components is essential to being successful with React.
React JS for Beginners – Chapter 02: Components
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