Creating a Functional Component in React JS

React JS is a popular JavaScript library for building user interfaces. In React, components are the building blocks of a UI. There are two types of components in React: Class components and Functional components. In this article, we will focus on creating a Functional component in React JS.

What is a Functional Component?

A Functional component in React JS is a simple JavaScript function that returns a React element. It is a lightweight way to define a component and is commonly used for presenting UI elements without any complex logic. Functional components are preferred over class components for simpler UI components.

Creating a Functional Component

To create a Functional component in React JS, you need to follow a few simple steps. First, make sure you have Node.js and npm installed on your machine. Then, you can use the following command to create a new React project:

      
        npx create-react-app my-app
        cd my-app
        npm start
      
    

Once your React project is set up, you can create a new file for your Functional component. Here’s an example of a simple Functional component that displays a greeting message:

      
        // Greet.js

        import React from 'react';

        function Greet() {
          return 
Hello, World!
;
        }

        export default Greet;
      
    

In the above example, we have created a Functional component called Greet. It is a simple function that returns a React element displaying the message “Hello, World!”. We then export the Greet component so that it can be used in other parts of our React application.

Using the Functional Component

Once you have created a Functional component, you can use it in your React application by importing it into another component and including it in the JSX markup. Here’s an example of how to use the Greet component we created earlier:

      
        // App.js

        import React from 'react';
        import Greet from './Greet';

        function App() {
          return (
            

              
            
          );
        }

        export default App;
      
    

In the above example, we import the Greet component and include it in the JSX markup of the App component. When the App component is rendered, it will display the greeting message from the Greet component.

Conclusion

Creating a Functional component in React JS is a simple and straightforward process. Functional components are a great way to define simple UI elements in a React application. By following the steps outlined in this article, you can start creating and using Functional components in your own React projects.

For more information and a detailed tutorial on creating Functional components in React JS, you can refer to the following video: Create a Functional component in React JS.