When building a payment app with third-party integration, it is crucial to connect the app to a backend API for fetching data and performing various operations.

To make API calls in React, we can use libraries like axios to simplify the process. axios is a popular HTTP client that provides an easy-to-use interface for making requests.

Here's an example of how we can use axios to fetch data from an API:

1const fetchData = async () => {
2  try {
3    const response = await axios.get('https://api.example.com/data');
4    console.log(response.data);
5  } catch (error) {
6    console.log(error);
7  }
8};
9
10fetchData();

In the code snippet above, we define an async function fetchData() that makes a GET request to the specified API endpoint using axios.get(). We use the await keyword to wait for the response, and then we log the data to the console.

By using axios, we can easily handle API calls in React and perform operations like fetching data, submitting forms, or updating resources. It provides features like request cancellation, interceptors, and automatic JSON parsing, making it a powerful tool for working with APIs in React.

Remember to handle errors appropriately in case the API call fails, like in the code example above where we catch any errors and log them to the console.

Next, we will learn about handling forms and user input in our payment app.

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const axios = require('axios');

​

const fetchData = async () => {

  try {

    const response = await axios.get('https://api.example.com/data');

    console.log(response.data);

  } catch (error) {

    console.log(error);

  }

};

​

fetchData();