Java script object notation(json)

Java script object notation(json)

• 1.
  Java Script ObjectNotation(JSON) Uses of JSON  It is used when writing JavaScript based application which includes browser extension and websites.  This is primarily used to transmit data between server and web application.  Web Services and API.s use JSON format to provide public data. Characteristics of JSON  Easy to read and write JSON  Lightweight text based interchange format  Language independent. 1
• 2.
  JSON syntax  Datais represented in name/value pairs  Curly braces hold objects and each name is followed by ':'(colon), the name/value pairs are separated by , (comma).  Square brackets hold arrays and values are separated by ,(comma).  Collection of name/value pairs: This Data Structure is supported by different programming language.  Ordered list of values: It includes array, list, vector or sequence etc. 2
• 3.
  JSON Data types Number :double- precision floating-point format in JavaScript .  String :double-quoted Unicode with backslash escaping.  Boolean: true or false  Array: an ordered sequence of values  Value :it can be a string, a number, true or false, null etc  Object :an unordered collection of key:value pairs  Whitespace: can be used between any pair of tokens  Null: Empty 3
• 4.
  Array  The valuesare separated by ,(comma).  Arrays should be used when the key names are sequential integers. Ex: { "books": [ { "language":"Java" , "edition":"second" }, { "language":"C++" , "lastName":"fifth" }, { "language":"C" , "lastName":"third" } ] } 4