JSON Data Types

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JSON Data Types


Valid Data Types
In JSON, values must be one of the following data types:

a string
a number
an object (JSON object)
an array
a boolean
null


JSON values cannot be one of the following data types:

a function
a date
undefined



JSON Strings
Strings in JSON must be written in double quotes.

Example

{"name":"John"}



JSON Numbers
Numbers in JSON must be an integer or a floating point.

Example

{"age":30}



JSON Objects
Values in JSON can be objects.

Example

{"employee":{"name":"John", "age":30, "city":"New York"}
}



Objects as values in JSON must follow the JSON syntax.








JSON Arrays
Values in JSON can be arrays.

Example

{"employees":["John", "Anna", "Peter"]}



JSON Booleans
Values in JSON can be true/false.

Example

{"sale":true}


JSON null
Values in JSON can be null.

Example

{"middlename":null}












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Reference: https://www.w3schools.com/js/js_json_datatypes.asp

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