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 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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