What is JSON

Chandradev
Dec 19, 2014
7k
0
0
Article

Introduction

JSON is the JavaScript Object Notation. It is a lightweight format for data interchange.

In the old days web services use XML as primary data transmission medium with all other applications.

But JSON is a more lightweight and effient medium for data transmission compared to XML.

The following is the basis syntax of JSON:

/Syntax for Json

var emp= {"EmpName":"Chandradev"
,
"EmpCode":"3007"
}

{"employees":[
{"firstName":"Chandradev", "lastName":"Sah"},
{"firstName":"Rajan", "lastName":"Prasad"},
{"firstName":"Suraj", "lastName":"Kumar"}
]}

Using JSON in JavaScript

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script type="text/javascript">
var emp= {"EmpName":"Chandradev"
,
"EmpCode":"3007"
}
alert(emp.EmpCode);
alert(emp.EmpName);
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
</form>
</body>
</html>

Advantages of JSON

JSON is an easier to use alternative of XML
JSON is a simple data exchange pertern that helps to communicate between JavaScript and server-side technology such as ASP.Net, PHP, JSP, CGI and so on
JSON is a lightweight data interchange format
JSON is language independent
JSON is "self-describing" and easy to understand

In the .Net world we can also expose JSON data to the outside using WCF, ASP.Net and MVC. I will be writing an article on this topic very soon.