Introduction to Exchangerates API

Exchangerates API is a public API that provides live exchange rate data for currencies. It provides a reliable and accurate source for developers to retrieve exchange rate data for their applications.

In this blog post, we will be discussing how you can use Exchangerates API with JavaScript. We will be providing you with code examples so you can easily understand the process.

Getting started with Exchangerates API

To use Exchangerates API, you will first need to sign up for an API key. Once you have signed up, you will have access to the API endpoint and can start making requests.

Exchangerates API endpoint is https://api.exchangeratesapi.io/latest. To get the latest exchange rate data, simply make a GET request to this endpoint with your API key included as a parameter.

Here's how you can make a request in JavaScript:

const apiKey = "your_api_key";
const url = `https://api.exchangeratesapi.io/latest?access_key=${apiKey}`;

fetch(url)
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.log(error));

In this example, we are using the fetch method to make our API request. We are including our API key as a parameter in the URL.

Once we receive a response, we are parsing the data as JSON and logging it to the console. If there is an error, we log the error message instead.

Retrieving exchange rates for specific currencies

If you want to retrieve exchange rate data for specific currencies, you can include a symbols parameter in your API request.

Here's how you can retrieve exchange rates for the USD, EUR, and GBP currencies:

const apiKey = "your_api_key";
const url = `https://api.exchangeratesapi.io/latest?symbols=USD,EUR,GBP&access_key=${apiKey}`;

fetch(url)
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.log(error));

In this example, we have included a symbols parameter in our URL with three currencies separated by commas. When we receive a response, we’re logging the data to the console.

Getting historical exchange rate data

To get historical exchange rate data, you can specify a date in your API request. Here's how you can get exchange rate data for a specific date:

const apiKey = "your_api_key";
const url = `https://api.exchangeratesapi.io/2010-01-12?access_key=${apiKey}`;

fetch(url)
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.log(error));

In this example, we have replaced the latest endpoint with a specific date (in this case, January 12, 2010). We’re then logging the data to the console after parsing the response.

Conclusion

Exchangerates API is a reliable and accurate source for exchange rate data. By using JavaScript, you can easily integrate exchange rate data into your web application. With the examples provided above, you can start making API requests and receiving exchange rate data today!