Connecting Web APIs and Authentication in JavaScript

Modern web applications rely on data from external services, making API integration a fundamental skill for any developer. To build secure and functional apps, you must know how to request data and authenticate your requests safely. This text-only course guides you from the absolute basics of HTTP requests to handling secure, authenticated APIs using modern JavaScript. You will learn how to read API documentation, structure your code with async/await, and securely manage API keys and tokens. \n\nWhat you'll learn: \n- Understand HTTP methods, status codes, and the core structure of web requests and responses. \n- Fetch data from open, public APIs using modern JavaScript async/await syntax. \n- Authenticate requests using API keys, query parameters, and request headers. \n- Implement secure token-based authentication, including Bearer tokens and basic JWT concepts. \n- Handle API errors gracefully and manage common issues like CORS and rate limiting. \n- Practice parsing JSON data and dynamically rendering it within text-based application flows. \n\nThe course starts with essential web terminology and basic HTTP concepts before moving into hands-on code walkthroughs for both public and secured APIs. You will progress through structured reading materials and written exercises designed to reinforce secure coding practices. This course is designed for beginner JavaScript developers who want to expand their skills into backend integrations; no prior experience with APIs is required. Start reading today to unlock the full potential of external data in your JavaScript applications.