Q117: What are the syntax rules of JSON - JavaScript Internals (521 Qs)

Below are the list of syntax rules of JSON

The data is in name/value pairs
The data is separated by commas
Curly braces hold objects
Square brackets hold arrays

Practical Code Example

javascript

// JSON Syntax Rules:
// 1. Keys must be double-quoted strings
// 2. Values: string, number, object, array, boolean, null (NO functions or undefined)
// 3. No trailing commas allowed
const validJson = `{
  "title": "Interview Guide",
  "version": 2,
  "isActive": true,
  "tags": ["js", "frontend"]
}`;
JSON.parse(validJson);