JSON 1

Question 1

What is JSON?

Answer 1

JavaScript Object Notation (JSON) is a standard text-based format for representing structured data based on JavaScript object, used for transmitting data in web applications.

Question 2

What are serialization and deserialization?

Answer 2

Serialization is a process of converting an Object into stream of bytes. Deserialization is converting stream of bytes into an object.

Question 3

Why are serialization and deserialization useful?

Answer 3

Serialization enables us to keep data for use in the running process or other processes if needed. We store the data, then deserialize when it is used elsewhere.

Question 4

How do you serialize a data structure into a JSON string using JavaScript?

Answer 4

JSON.stringify() method converts a JavaScript object or value to a JSON string

Question 5

How do you deserialize a JSON string into a data structure using JavaScript?

Answer 5

JSON.parse() method parses a JSON string, constructing the JavaScript value or object described by the string

Question 6

How to you store data in localStorage?

Answer 6

setItem() method

Question 7

How to you retrieve data from localStorage?

Answer 7

getItem() method