ITChapters | Learn JSON Online

JSON - DataTypes

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

JSON values cannot be one of the following data types:

Strings in JSON must be written in double quotes.

See this example:

{ "name":"John" }

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

See this example:

{ "age":30 }

Values in JSON can be objects.

See this example:

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

Values in JSON can be arrays.

See this example:

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

Values in JSON can be true/false.

See this example:

{ "sale":true }

Values in JSON can be null.

See this example:

{ "middlename":null }

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