Components in React
In React, components are the building blocks of your application. A component is essentially a JavaScript function (or a class) that is responsible for rendering UI elements on the page.
To define a valid React component, there are two important rules to follow:
1-The component must return JSX .
2- The name of the function or class that defines the component must start with a capital letter. This is because React treats components with lowercase letters as HTML tags, but components with capital letters are treated as custom elements.
The Root Component:
Every React app has a root component that serves as the entry point for your application. When you run create-react-app, this root component is automatically created for you. It is typically found in the src/App.js file.
The root component itself renders other components inside its return statement. This is where you define the structure of your app.
How to Render Components in React:
1.Define and Call Components Inside the Root Component: You can define small components directly inside the root component. However, this approach is not ideal for larger applications because it can quickly become cluttered.
- Define Components Before or After the Root Component: You can define components outside the root component but still within the same file. You can then call these components inside your root component’s return statement. 3.Create a Separate Folder for Components (Best for Larger Apps): For better organization, especially in large applications, it's a good practice to define each component in its own file. You can create a components/ folder, where each component resides in a separate file. In this approach, you would export your components and import them into App.js
