Introduction

In this article, we will continue building the currency converter app using Next.js 13, Tailwind CSS, and Rapid API. In Part 1, we set up the project and created the basic structure of the app. Now, we will add functionality to convert currencies using the Rapid API.

Setting up Rapid API

To use the Rapid API for currency conversion, you will need to sign up for an account and get an API key. Once you have your API key, you can use it to make requests to the currency exchange endpoint.


// Sample code for making a request to the currency exchange endpoint
const apiKey = 'your-api-key';
const fromCurrency = 'USD';
const toCurrency = 'EUR';
const url = `https://currencyconverter.p.rapidapi.com/?from=${fromCurrency}&to=${toCurrency}&amount=1`;
fetch(url, {
method: 'GET',
headers: {
'x-rapidapi-key': apiKey,
'x-rapidapi-host': 'currencyconverter.p.rapidapi.com'
}
})
.then(response => response.json())
.then(data => {
console.log(data);
})
.catch(error => {
console.error('Error:', error);
});


Adding Currency Conversion Feature

Now that we have the Rapid API set up, we can add the currency conversion feature to our app. We will create a form where users can enter the amount and select the currencies they want to convert. When the form is submitted, we will make a request to the Rapid API and display the converted amount.


// Sample code for handling currency conversion form submission
function handleSubmit(event) {
event.preventDefault();
const amount = document.getElementById('amount').value;
const fromCurrency = document.getElementById('fromCurrency').value;
const toCurrency = document.getElementById('toCurrency').value;

// Make request to Rapid API with amount, fromCurrency, and toCurrency
// Display the converted amount to the user
}


Conclusion

In this part of the tutorial, we added the functionality to convert currencies using the Rapid API. We now have a fully functional currency converter app that can convert between different currencies. In the next part, we will add styling to make the app more visually appealing using Tailwind CSS.