JavaScript APIs & AJAX

Learn the fundamentals of Web APIs and how they enable communication between different applications and services.

Master the modern Fetch API for making HTTP requests in JavaScript with async/await patterns and professional error handling.

Master JSON data manipulation in JavaScript. Learn parsing, validation, transformation, and handling complex data structures from APIs.

Master REST API principles and patterns. Learn resource modeling, CRUD operations, status codes, and how to build robust API client architectures.

Master comprehensive error handling strategies for APIs. Learn HTTP status codes, error recovery patterns, and building resilient applications.

Master API security and authentication patterns. Learn JWT tokens, API key management, OAuth flows, and secure API integrations.

Master real-time communication with WebSockets. Learn bidirectional data transfer, live updates, and building responsive real-time applications.

Master client-side data storage with localStorage, sessionStorage, IndexedDB, and cookies. Learn data persistence strategies for modern web applications.

Explore browser device APIs including Geolocation, Camera, Microphone, and more. Learn to build location-aware and device-integrated applications.

Build a complete weather application combining APIs, geolocation, storage, and modern JavaScript. Apply everything you have learned in a real-world project.