Published: 13 Jan 2026
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.