JSON (JavaScript Object Notation)

JSON is a lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate. It is primarily used to transmit data between a server and a web application as text. JSON is language-independent, although it is based on a subset of the JavaScript programming language.

Key Characteristics of JSON:

• Text-based: JSON is a text format that can be easily read and written.
• Lightweight: It is less verbose than XML, making it faster to transmit and parse.
• Data Structures: It supports two main structures:
• Objects: Unordered sets of key-value pairs (like dictionaries in Python).
• Arrays: Ordered lists of values.

JavaScript Object

• A JavaScript object is a collection of properties, where each property is defined as a key-value pair. Objects can contain other objects and arrays, and they are a fundamental part of the JavaScript programming language.
• Key Characteristics of JavaScript Objects:
• Dynamic: Objects can be modified at runtime, allowing properties to be added, changed, or deleted.
• Reference Types: Objects are reference types, meaning that they are stored in memory and accessed by reference rather than by value.

Conversion: JavaScript Object to JSON and Vice Versa

1. JavaScript Object to JSON:

You can convert a JavaScript object to a JSON string using the JSON.stringify() method.

const jsObject = { name: "John", age: 30, city: "New York" };
const jsonString = JSON.stringify(jsObject);
console.log(jsonString); 
// Output: '{"name":"John","age":30,"city":"New York"}'

2. JSON to JavaScript Object:

You can convert a JSON string back to a JavaScript object using the JSON.parse() method.

const jsonString = '{"name":"John","age":30,"city":"New York"}';
const jsObject = JSON.parse(jsonString);
console.log(jsObject); 
// Output: { name: 'John', age: 30, city: 'New York' }

Summary

• JSON is a text format for representing structured data, and it can be used to exchange data between a server and a client.
• JavaScript objects are collections of key-value pairs used in JavaScript programming.

You can easily convert between JavaScript objects and JSON strings using JSON.stringify() and JSON.parse().