JSON

JSON

• JavaScript Object Notation.
• JSON is a syntax for storing and exchanging data
• JSON is text, written with JavaScript object notation.

Use of Json

• Exchanging Data
• Sending Data
• Receiving Data
• Storing Data

Json syntax

• Syntax Rules
• Data is in name/value pairs
• Data is separated by commas
• Curly braces hold objects
• Square brackets hold arrays

JSON Values

• string
• number
• object (JSON object)
• array
• boolean
• null

Data Types

• a string
• a number
• an object (JSON object)
• an array
• a boolean
• null

JSON.parse()

• A common use of JSON is to exchange data to/from a web server.
• Parse the data with JSON.parse(), and the data becomes a JavaScript object.

JSON.stringify()

• Convert a JavaScript object into a string with JSON.stringify().

JSON Objects

• objects are surrounded by curly braces {}.
• JSON objects are written in key/value pairs.
• Keys must be strings, and values must be a valid JSON data type (string, number, object, array, boolean or null).

Arrays

• Arrays in JSON are almost the same as arrays in JavaScript.
• In JSON, array values must be of type string, number, object, array, boolean or null.

Referance : W3 School Json
Image : Json file - Free interface icons