JSON Basic Concepts and Uses

JSON (JavaScript Object Notation) is a lightweight data interchange format based on JavaScript object literal syntax, but it has become a universal data format independent of programming languages.

Main Uses

1. Data Exchange: Transferring data between clients and servers, one of the most commonly used data formats in web applications.

2. Configuration Files: Many applications and frameworks use JSON as a configuration file format, such as npm's package.json.

3. Data Storage: In some lightweight applications, JSON files can be used as simple databases.

4. API Responses: Most modern APIs return data in JSON format.

JSON Features

• Concise and Clear: Simple syntax, easy to read and write.
• Lightweight: More compact than formats like XML, with higher transmission efficiency.
• Easy to Parse: Almost all programming languages have built-in JSON parsing and generation tools.
• Structured: Supports data types such as objects, arrays, strings, numbers, booleans, and null.