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📄 Node.js – Importing JSON

📌 What is JSON?

What is JSON?

JSON stands for JavaScript Object Notation. It is a standard, text-based, human-readable data interchange format used to exchange data between web clients and web servers.

  • Lightweight format for storing and transporting data.
  • Often used when data is sent from a server to a web page.
  • Self-describing and easy to understand.
  • Collection of key-value pairs where keys are strings and values can be: Number, String, Boolean, Array, Object, or NULL.

✨ Advantages of JSON

  • Supported by all programming languages
  • Language independent
  • Can be used on all platforms
  • Easy to read and understand

⚙️ JSON Methods in JavaScript

  • JSON.parse() → Converts a JSON string into a JavaScript object.
  • JSON.stringify() → Converts a JavaScript object into a JSON string.

📌 Example JSON Structure

{ "id": 101, "name": "John Doe", "isActive": true, "hobbies": ["reading", "traveling", "swimming"], "address": { "street": "123 Main St", "city": "Anytown", "postalCode": "12345" }, "phoneNumber": null }

💻 Importing JSON in Node.js

Node.js Environment
RUNTIME ACTIVE
const data = require('./data.json');

// Accessing JSON data
console.log(data.id);
console.log(data.name);
console.log(data.hobbies);
console.log(data.hobbies[1]);
console.log(data.address);
console.log(data.address.city);
console.log(data.address.postalCode);
Terminal Output
Live Output Preview

🧠 Test Your Knowledge

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