JSON in JavaScript

JSON stands for JavaScript Object Notation. It is a lightweight format commonly used for storing and exchanging data between applications.

What is JSON?

JSON is a text-based data format that represents information using key-value pairs and arrays.

JSON is widely used when JavaScript applications communicate with web servers and APIs.

JSON Structure

A JSON object is written using curly braces. Data is represented using key-value pairs.

{
    "name": "Rahul",
    "age": 25,
    "course": "JavaScript"
}

Example 1: JSON.stringify()

The JSON.stringify() method converts a JavaScript object into a JSON string.

var student = {
    name: "Rahul",
    age: 25
};

var jsonData = JSON.stringify(student);

console.log(jsonData);

Example 2: JSON.parse()

The JSON.parse() method converts a JSON string into a JavaScript object.

var jsonData =
'{"name":"Rahul","age":25}';

var student = JSON.parse(jsonData);

console.log(student.name);

Example 3: JSON Array

JSON can also represent arrays containing multiple values.

var students = [
    "Rahul",
    "Priya",
    "Amit"
];

var jsonData = JSON.stringify(students);

console.log(jsonData);

Important Points