JavaScript Object Notation (JSON):
JSON is an open standard file format and data interchange format that uses human-readable text to store and transmit data objects consisting of attribute–value pairs and arrays. It is a common data format with diverse uses in electronic data interchange, including that of web applications with servers.
JSON is short for JavaScript Object Notation, and is a way to store information in an organized, easy-to-access manner.
A common use of JSON is to read data from a web server, and display the data in a web page.
JSON is a data representation format used for:
- Storing data (Client/Server)
- Exchanging data between Client and Server
JSON Supported Types :
- Number
- String
- Boolean
- Array
- Object
- Null
let emp = {
"key": "value",
"key": "value",
"key": "value"
};JS Object vs JSON Object
In JSON, all keys in an object must be enclosed with double-quotes. While in JS, this is not necessary.
let emp = {
name: "Surya",
age: 25,
Role: "Frontend Dev"
};let emp = {
"name": "Surya",
"age": 25,
"Role": "Frontend Dev"
};JSON Methods :
We have two methods they are
1. JSON.stringify() : It converts the given value into JSON string
Syntax:
JSON.stringify( value )const person = {name: "Surya", age: 25, city: "Hyderabad"};
const conatiner = JSON.stringify(person);
console.log(person);2. JSON.parse() : It parses a JSON string and returns a JS object.
Syntax:
JSON.parse( string )const bikes = '["R15", "BMW", "pulsar200"]';
const myArr = JSON.parse(bikes);
console.log(myArr);JSON support is included in all major browsers and in the latest ECMAScript (JavaScript) standard:
Web Browsers Support
- Firefox 3.5
- Internet Explorer 8
- Chrome
- Opera 10
- Safari 4
