JSON

Summary

JavaScript Object Notation — a lightweight, human-readable text format for structuring data, and the de facto standard for API request/response payloads. JSON supports objects, arrays, strings, numbers, booleans, and null, making it easy for frontend and backend systems written in different languages to exchange structured data.

• 1Practice converting objects to JSON with `JSON.stringify` and back with `JSON.parse`. Test it with at least one normal case and one edge case so you can explain the behavior confidently.
• 2Inspect a real API response's JSON structure in DevTools. Validate your understanding by applying it in a small practical example.
• 3Learn valid JSON syntax rules (double quotes, no trailing commas, no comments).