Chapter 11

JSON

JavaScript Object Notation (JSON) is a text-based format for storing and transporting data. The Javascript Objects can be easily converted into JSON and vice versa. For example.

//  a JavaScript object
let myObj = { name:"Ryan", age:30, city:"Austin" };

// converted into JSON:
let myJSON = JSON.stringify(myObj);
console.log(myJSON);
// Result: '{"name":"Ryan","age":30,"city":"Austin"}'

//converted back to JavaScript object
let originalJSON = JSON.parse(myJSON);
console.log(originalJSON);

// Result: {name: 'Ryan', age: 30, city: 'Austin'}

stringify and parse are the two methods supported by JSON.

The following data types are supported by JSON.

• string
• number
• array
• boolean
• object with valid JSON values
• null

It can not be function, date or undefined.