Javascript-and-json

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 syntax.
JSON is an extremely common data interchange format used to send and store information in computer systems.

Question 2

What are serialization and deserialization?

Answer 2

Serialization is the process of turning an object in memory into a stream of bytes so you can do stuff like store it on disk or send it over the network.
Deserialization is the reverse process: turning a stream of bytes into an object in memory.

Question 3

Why are serialization and deserialization useful?
The serialization process is platform independent, an object serialized on one platform can be deserialized on a different platform.

Answer 3

Sending data over the network in form objects, e.g. sending messages as objects in chat application.
store them in memory

Question 4

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

Answer 4

JSON.stringify() method

Question 5

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

Answer 5

JSON.parse() method