How to connect a React app to a backend API?

To connect a React app to a backend API, you can use an HTTP client library such as Axios or Fetch to make API requests from your React components. Here's a basic example of how you can do this:

Install Axios (or another HTTP client library) in your React app:

npm install axios

Import Axios in your component:

import axios from 'axios';

Make a GET request to your backend API endpoint in a React component:

axios.get('http://your-api-endpoint.com/api/data')
  .then(response => {
    console.log(response.data);
  })
  .catch(error => {
    console.error(error);
  });

You can also make POST, PUT, DELETE requests using Axios. Here's an example of a POST request:

axios.post('http://your-api-endpoint.com/api/data', { data: 'example' })
  .then(response => {
    console.log(response.data);
  })
  .catch(error => {
    console.error(error);
  });

You can also use Axios interceptors to handle common response data, errors, or authentication headers. Here's an example of setting a common base URL for your API requests:

axios.defaults.baseURL = 'http://your-api-endpoint.com';

By following these steps, you can easily connect your React app to a backend API and fetch data or interact with your server-side logic.