Detailed Explanation of JSON Syntax Rules

JSON syntax is based on JavaScript object literal syntax, but there are some strict rules that must be followed:

1. Data Structures

JSON supports two main data structures:

• Object: Consists of key-value pairs, enclosed in curly braces {}
• Array: An ordered list of values, enclosed in square brackets []

2. Key-Value Pair Rules

• Keys must be enclosed in double quotes: "name": "value", single quotes or no quotes are not allowed
• Key-value pairs are separated by commas: "name": "value", "age": 25
• No trailing comma after the last key-value pair: This is an important difference between JSON and JavaScript object literals

3. Value Types

JSON supports the following data types:

• String: Must be enclosed in double quotes, e.g., "hello"
• Number: Can be an integer or floating-point number, e.g., 42 or 3.14
• Boolean: true or false
• Null: null
• Object: Nested JSON objects
• Array: Ordered list of values

4. Special Character Handling

Special characters in strings need to be escaped with a backslash \, such as:

• \n: Newline
• \t: Tab
• \": Double quote
• \\: Backslash itself

5. Other Rules

• No comments allowed: Comments cannot be added in JSON
• No functions allowed: Functions cannot be included in JSON
• No undefined support: undefined values cannot be used in JSON
• Case-sensitive: true and TRUE are different, only lowercase true is valid