JSON - Overview

JSON or JavaScript Object Notation is a lightweight text-based open standard designed for human-readable data interchange. Conventions used by JSON are known to programmers, which include C, C++, Java, Python, Perl, etc.

JSON - Syntax

Let's have a quick look at the basic syntax of JSON. JSON syntax is basically considered as a subset of JavaScript syntax; it includes the following −

JSON - DataTypes

JSON format supports the following data types −

Type	Description
Number	double- precision floating-point format in JavaScript
String	double-quoted Unicode with backslash escaping

JSON - Objects

Creating Simple Objects

JSON objects can be created with JavaScript. Let us see the various ways of creating JSON objects using JavaScript −

JSON - Schema

JSON Schema is a specification for JSON based format for defining the structure of JSON data. It was written under IETF draft which expired in 2011. JSON Schema −

JSON - Comparison with XML

JSON and XML are human readable formats and are language independent. They both have support for creation, reading and decoding in real world situations. We can compare JSON with XML, based on the following factors −

JSON with PHP

This chapter covers how to encode and decode JSON objects using PHP programming language. Let's start with preparing the environment to start our programming with PHP for JSON.

JSON with Perl

This chapter covers how to encode and decode JSON objects using Perl programming language. Let's start with preparing the environment to start our programming with Perl for JSON.

JSON with Python

This chapter covers how to encode and decode JSON objects using Python programming language. Let's start with preparing the environment to start our programming with Python for JSON.

JSON with Ruby

This chapter covers how to encode and decode JSON objects using Ruby programming language. Let's start with preparing the environment to start our programming with Ruby for JSON.

JSON with Java

This chapter covers how to encode and decode JSON objects using Java programming language. Let's start with preparing the environment to start our programming with Java for JSON.

JSON with Ajax

AJAX is Asynchronous JavaScript and XML, which is used on the client side as a group of interrelated web development techniques, in order to create asynchronous web applications. According to the AJAX model, web applications can send and retrieve data from a server asynchronously without interfering with the display and the behavior of the existing page.

JSON - Useful Resources

The following resources contain additional information on JSON. Please use them to get more in-depth knowledge on this.

Discuss JSON

JSON or JavaScript Object Notation is a lightweight text-based open standard designed for human-readable data interchange. The JSON format was originally specified by Douglas Crockford, and is described in RFC 4627. The official Internet media type for JSON is application/json. The JSON filename extension is .json. This tutorial will help you understand JSON and its use within various programming languages such as PHP, PERL, Python, Ruby, Java, etc.