A Comprehensive Guide to Using APIs in JavaScript

APIs (Application Programming Interfaces) have become an essential part of modern web development. They enable applications to communicate with external services, exchange data, and interact with various systems. JavaScript, being the primary language for web development, provides excellent tools for working with APIs, making it easier for developers to integrate functionalities like retrieving data from web servers, updating databases, or interacting with cloud services.

In this article, we’ll explore how to use APIs in JavaScript, focusing on key methods such as fetch(), XMLHttpRequest, and Axios. We'll provide examples to illustrate how these can be used in real-world applications.

1. What is an API?

An API allows one application to interact with another. For example, a weather application might need to get weather data from a remote server. The application sends a request to an API, which processes it and returns the requested data, often in the form of JSON (JavaScript Object…