Login Page React Example

In this article, I will demonstrate an instance of a React-powered login webpage. As someone who has utilized React extensively, I believe it to be a robust and effective JavaScript library for constructing user interfaces. With its component-driven design, React makes it simple to generate reusable UI components, while its virtual DOM enables efficient rendering and updating of said components.

Setting up the React App

To get started, we need to set up a new React app. If you haven’t already, make sure you have Node.js and npm installed on your machine. Open your terminal and run the following command:

npx create-react-app login-page

This will create a new folder called “login-page” with all the necessary files and dependencies to run a React app. Once the command finishes, navigate into the “login-page” folder:

cd login-page

Creating the Login Component

Now that we have our React app set up, let’s create the login component. In the “src” folder, create a new file called “Login.js” and open it in your favorite code editor.

Inside “Login.js”, we will define our Login component. This component will render a simple form with email and password inputs, as well as a submit button. Here’s an example of what the component code might look like:

import React, { useState } from 'react';


function Login() {

  const [email, setEmail] = useState('');

  const [password, setPassword] = useState('');
  const handleSubmit = (event) => {

    event.preventDefault();

    // Add your login logic here

  };
  return (

Login

        

          Email:

           setEmail(e.target.value)} />

        

        

        

          Password:

           setPassword(e.target.value)} />

        

        

        

      

  );

}

export default Login;

Here, we’re using React’s useState hook to manage the state of the email and password inputs. The handleSubmit function is called when the form is submitted, preventing the default form behavior and allowing us to add our own login logic.

Rendering the Login Component

Now that we have our Login component, let’s render it in our app. Open the “src/App.js” file and replace its contents with the following code:

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


function App() {

  return (

Welcome to My Login Page
      
    
  );

}

export default App;

In this code, we import our Login component and render it inside the App component, which serves as the entry point for our app. We also add a heading to give our login page a title. Feel free to customize the heading and add any additional styling or content to the page.

Running the App

With everything set up and the components in place, we’re ready to run our React app. In the terminal, make sure you are in the “login-page” folder and run the following command:

npm start

This will start the development server and open the app in your browser at http://localhost:3000. You should see your login page with the email and password inputs. Feel free to test it out and add your own login logic to authenticate users.

Conclusion

Building a login page with React is a great way to showcase the power and flexibility of this JavaScript library. React’s component-based architecture and virtual DOM make it easy to create reusable UI elements and efficiently update the user interface. By following the steps outlined in this article, you should now have a basic understanding of how to create a login page using React.