JSON Data Types

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

String: A string is a sequence of characters, surrounded by quotation marks. Strings can contain letters, numbers, and special characters.

{
  "text": "Hello World!",
}
//
{
  "name": "Marry Doe",
  "city": "New York"
}
//
{
  "name": "John Smith",
  "address": {
    "street": "123 Main St",
    "city": "Chicago",
    "state": "IL"
  }
}

Number: A number is a numeric value that can be an integer or a floating-point value.

{
  "float": 3.14,
  "integer": 100000
}
//array of integer
{
  "numbers": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
}
//array of float
{
  "prices": [1.124, 3.33, 124.56, 6.80]
}

Boolean: A boolean value can be either true or false.

{
  "booleanField": true
}
//array of boolean
{
  "answers": [true, false, true, false]
}

Object: An object is a collection of key-value pairs. The keys are strings, and the values can be any valid JSON data type, including another object. Objects are surrounded by curly braces ({}).

{
  "name": "Muller",
  "age": 30,
  "address": {
    "street": "562 Main Street",
    "city": "New York",
    "state": "NY"
  }
}

Array: An array is an ordered list of values. The values can be any valid JSON data type, including another array. Arrays are surrounded by square brackets ([]).

[
   {
      "name":"iPhone",
      "manufacturer":"Apple"
   },
   {
      "name":"Galaxy",
      "manufacturer":"Samsung"
   },
   {
      "name":"Pixel",
      "manufacturer":"Google"
   }
]
//more data
[
   {
      "name":"iPhone",
      "manufacturer":"Apple",
      "releaseYear":2007,
      "screenSize":3.5
   },
   {
      "name":"Galaxy",
      "manufacturer":"Samsung",
      "releaseYear":2009,
      "screenSize":4.0
   },
   {
      "name":"Pixel",
      "manufacturer":"Google",
      "releaseYear":2016,
      "screenSize":5.0
   }
]

Null: The null value represents an empty value or the absence of a value.

In JSON, null represents an absence of value or a null value. It is used to indicate that a variable has no value or to mark the end of an object or array.

For example, you could use null as the value for a field in a JSON object like this:

{
  "field1": "value1",
  "field2": null
}
//Alternatively, you could use null to mark the end of an array like this:
[1, 2, 3, null]

These data types can be used to represent a variety of data structures and types of information.