Intro to JSON

JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format. It's easy for humans to read and write, and simple for machines to parse and generate.

Structure of JSON

JSON is built on two main structures:

1. A collection of name/value pairs (similar to a Python dictionary)
2. An ordered list of values (similar to a Python list)

JSON data is represented in key-value pairs, enclosed in curly braces {}. Arrays are enclosed in square brackets [].

{
  "name": "John Doe",
  "age": 30,
  "city": "New York",
  "hobbies": ["reading", "swimming", "coding"]
}

JSON Data Types

JSON supports the following data types:

• String: "Hello, World!"
• Number: 42 or 3.14
• Boolean: true or false
• Null: null
• Object: {"key": "value"}
• Array: [1, 2, 3]

Common Use Cases

JSON is widely used for:

1. API responses: Many web services return data in JSON format
2. Configuration files: Applications often use JSON for settings
3. Data storage: JSON is a popular format for storing structured data
4. Data exchange between different programming languages

JSON's simplicity and versatility make it an essential tool for modern data exchange and storage.