JavaScript and JSON Essentials - Second Edition

Datatypes in JSON

Now, let us take a look at a more complex example of JSON. We'll also go over all the datatypes that are supported by JSON. JSON supports six data types: strings, numbers, Booleans, arrays, objects, and null:

{  "studentid" : 101,  "firstname" : "John",  "lastname" : "Doe",  "isStudent" : true,  "scores" : [40, 50],  "courses" : {      "major" : "Finance",      "minor" : "Marketing"    }}

In the preceding example, we have key-value pairs of different data types. Now let us take a close look at each of these key-value pairs.

The datatype of the value that "studentid" references is a number:

"studentid" : 101,

The datatype of the value that "firstname" references is a string:

  "firstname" : "John",

In the following snippet, the datatype of ...