JSON Data Types

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JSON Data Types
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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 same rules as JSON objects.

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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