JSON value

JSON values can be:

• A number (integer or floating point)
• A string (in double quotes)
• A Boolean (true or false)
• An array (in square brackets) - []
• An object (in curly brackets) - {}
• null

JSON Arrays

JSON arrays are written inside square brackets.

An array can contain multiple objects:

{
  "employees": [
　　　　{ "firstName":"John" , "lastName":"Doe" },
　　　　{ "firstName":"Anna" , "lastName":"Smith" },
　　　　{ "firstName":"Peter" , "lastName":"Jones" }
　　]
}

JSON Objects

JSON objects are written inside curly brackets,

Objects can contain multiple name/values pairs:

{ "firstName":"John" , "lastName":"Doe" }

This is also simple to understand, and equals to the JavaScript statements:

firstName = "John"
lastName = "Doe"