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JSON format and data types

Posted on 30 July 2017 | 4:24 pm by Nitish Chauhan

JSON syntax is a subset of the JavaScript object notation syntax. JSON syntax has following rules:
1. Data is represented in name/value pairs.
2. Data is separated by commas.
3. Curly braces hold objects and each object name is followed by colon.
4. Square brackets hold arrays.

JSON example:

{"students":[ 
{"firstName":"Sandy", "lastName":"Sethi"},
{"firstName":"Roxy", "lastName":"Malik"},
{"firstName":"Sunil", "lastName":"Antil"}
]}

JSON datatypes:

Data TypeDescription
  1. Number
It represents double-precision floating-point format in JavaScript
  1. String
It represents double-quoted Unicode with backslash escaping
  1. Boolean
It represents true or false
  1. Array
It represents an ordered sequence of values
  1. Value
it can be a string, a number, true or false, null etc
  1. Object
It represents an unordered collection of key:value pairs
  1. Whitespace
It can be used between any pair of tokens
  1. null
It represents empty



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