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Introduction to JSON

Explore the fundamentals of JSON, a lightweight text-based format used to structure data in web development. Understand how to parse JSON strings into JavaScript objects, convert objects back into JSON, and apply these skills to work with APIs and client-server communication more effectively.

JSON (JavaScript Object Notation) is a text-based data format used to represent structured data. It is commonly employed to transmit data in web applications. JSON is easy to read and write, making it ideal for both humans and machines.

JSON data consists of key-value pairs and supports structures like objects and arrays. While it resembles JavaScript object syntax, JSON is a standalone format used in many programming environments.

JSON syntax

JSON syntax is simple and restricted to these data types:

  • Strings: Enclosed in double quotes (e.g., "Hello").

  • Numbers: Whole numbers, decimals, or scientific notation (e.g., 42, 3.14). ... ...