EPISODE 10 – JSON & APIs

Modern web applications rely on JSON and APIs to exchange data between the frontend and backend. Understanding this relationship is essential for building real-world applications.

In this video, you will learn:

• JSON (JavaScript Object Notation) is the most commonly used data format on the web.
• It uses simple key–value pairs, making data easy to read, write, and parse.
• Backend APIs send data to the frontend in JSON format.
• The frontend uses fetch() to make API calls and response.json() to extract the data.
• Once received, the data is processed and displayed in the UI in a user-friendly way.
• JSON acts as the data container, while APIs act as the delivery system.
• Clean JSON handling leads to better performance, fewer bugs, and more professional frontend code.

Understanding JSON and APIs helps developers work confidently with real-time data, integrate third-party services, and build scalable applications.