The document provides an introduction to JSON (JavaScript Object Notation), which is a syntax for storing and exchanging data, designed for human readability and ease of use. It details JSON's characteristics, data types, and its uses in web applications and APIs for data transfer without page refreshes. Key features include its lightweight format, language independence, and the requirement for data to be structured in name/value pairs.

1. Introduction to
JSON

2. Agenda

3. Agenda

4. What is
JSON?

5. What is
JSON?
 JSON stands for JavaScript Object Notation.
 JSON is a syntax for storing and exchanging data.
 The format was specified by Douglas Crockford.
 Basically it was designed for human readable data interchange.
 JSON is text written with JavaScript Object Notation.
 It has been extended from the JavaScript Scripting Language.
 The filename extension is .json.
 JSON internet media type is application/json.

6. Uses

7. Uses of
JSON
 Helps you to transfer data from server.
 JSON format helps transmit and serialize all types of structured data.
 Allows you to perform asynchronous data call without the need to the
page refresh (AJAX- Asynchronous JavaScript and XML).
 It is widely used for JavaScript-based application, which includes
browser extension and website).
 You can transmit the data between server and web-application using
JSON.
 We can use JSON with modern programming languages.
 It is used for writing the JavaScript-based applications that include
browser add-on’s.
 Web services and API’s use the JSON format to get public data.

8. Characteristi
cs

9.  JSON is easy to read and write.
 It is lightweight text-based interchange format.
 JSON is language independent.
Characteristi
cs

10. JSON Data
Type

11. JSON Data
Type
 Numbers
 String
 Boolean
 Null
 Object
 Array

12. Data Types
 String
String in JSON must be written in double quotes.
Ex.
{“name”: ”John”}
 Numbers
Numbers in JSON must be an integer or a floating point.
Ex.
{“age”:30}
 Object
Values in JSON can be object
Ex.
{
“employee” : {“name” : ”John”, “age” : 30, “city” : ”New York”}
}

13. Data Types
 Array
Values in JSON can be arrays.
Ex.
{
“employees” : [“john”, “Anna”, “Peter”]
}
 Boolean
Values in JSON can be true/false.
Ex.
{“sale” :true}
 Null
Values in JSON can be null.
Ex.
{“middlename” :null}

14. JSON
Syntax

15. JSON Syntax
 Data should be in name/value pairs.
 Data should be separated by commas.
 Curly braces should hold objects.
 Square brackets hold arrays.

16. Thank you!