Lianja

Understanding JSON Array vs JSON Object

See more JSON Examples

This example explains the difference between a JSON Array and a JSON Object. A JSON Array begins with "[" and ends with "]", whereas a JSON Object begins with "{" and ends with "}".

Elements contained in a JSON array are accessed by index, whereas elements in a JSON object are typically accessed by name (but can also be accessed by index).

Lianja

llSuccess = .F.

// A JSON array should be loaded into a Chilkat JSON array,
// whereas a JSON object should be loaded into a Chilkat JSON object.

// A JSON array may contain objects, and a JSON object may contains arrays, but
// it is the top-level (outermost) element that defines whether the JSON
// document is an array or an object.
// An array begins and ends with "[" ... "]"
// An object begins and ends with "{" ... "}"

// For example, an array containing 2 objects:
lcStrJsonArray = '[ { "name": "Bill" }, { "name": "Ted" } ]'

// Load it into a JSON array.
loJsonA = createobject("CkJsonArray")
llSuccess = loJsonA.Load(lcStrJsonArray)
? "number of array elements: " + str(loJsonA.Size)

// This is an object containing an array:
lcStrJsonObj = '{ "characters": [ "Bill", "Ted" ] }'

// Load it into a JSON object.
loJsonO = createobject("CkJsonObject")
llSuccess = loJsonO.Load(lcStrJsonObj)
? "number of object members: " + str(loJsonO.Size)


release loJsonA
release loJsonO