JSON, short for JavaScript Object Notation, is an open-standard file format or data interchange format that uses human-readable text to transmit data objects consisting of attribute–value pairs and array data types.
Syntax for JSON objects and arrays is given briefly as below:
{ } - Object: A series of key:value pairs enclosed in a matched pair of curly brackets, with an opening left curly bracket and its matching right curly bracket.
[ ] - Array: A series of values (not key:value pairs) enclosed in a matched pair of square brackets, with an opening left square bracket and its matching right square bracket .
Key- value pairs inside objects: All key:value pairs inside an object conform to the earlier rules for key:value pairs.
Values inside arrays - All values conform to the earlier rules for formatting values (for example, double quotes around text, no quotes around numbers
