WinDev provides native JSON features via:

1. WLanguage JSON Functions (Classic procedural code)

These functions allow you to:

• Create JSON (JSONBuild)

• Parse JSON (JSONToVariant, JSONToString)

• Navigate JSON structures via variants or associative arrays

• Serialize/deserialize objects

2. JSON Variables (Native JSON type)

WinDev has a json type that behaves like a structured object.

Example:

myJson is json
myJson.name = "Alex"
myJson.age = 30

3. Mapping JSON to Classes / Structures

You can easily bind:

• JSON → Class (Deserialize)

• Class → JSON (Serialize)

4. REST Integration

WinDev REST functions (HTTPRequest, RESTSend, etc.) commonly work with JSON responses.

📌 Basic Examples

Example 1 — Parse JSON using Variant

sData is string = [
{
    "name": "Alice",
    "age": 32,
    "languages": ["EN", "FR"]
}
]

jsonVariant = JSONToVariant(sData)

Info(jsonVariant[1].name) // "Alice"
Info(jsonVariant[1].languages[2]) // "FR"

Example 2 — Build JSON Manually (JSONBuild)

arrLanguages is array of string
arrLanguages.add("EN")
arrLanguages.add("FR")

sJSON is string
sJSON = JSONBuild(
    [
        "name"        : "Alice",
        "age"         : 32,
        "languages"   : arrLanguages
    ]
)

Info(sJSON)

Result:

{"name":"Alice","age":32,"languages":["EN","FR"]}

Example 3 — Using the json Type

The json type acts like a dynamic object.

person is json
person.name = "Bob"
person.age = 45
person.active = True

// Add an array
person.hobbies = []
person.hobbies[1] = "Running"
person.hobbies[2] = "Skiing"

Info(JSONToString(person))

Example 4 — Deserialize JSON into a Class

Class:

// Class Person
name is string
age is int
active is boolean

Code:

sJSON is string = {"name":"John","age":40,"active":true}

myPerson is Person
Deserialize(myPerson, sJSON, psJSON)

Info(myPerson.name) // John

Example 5 — Serialize a Class into JSON

myPerson is Person
myPerson.name = "Emma"
myPerson.age = 27
myPerson.active = True

sOut is string = Serialize(myPerson, psJSON)

Info(sOut)

Example 6 — Calling a REST API and Reading JSON

HTTPRequest("https://jsonplaceholder.typicode.com/todos/1")

IF HTTPGetResult(httpResult) THEN
    sResponse is string = HTTPGetResult(httpResult)
    todo = JSONToVariant(sResponse)
    Info(todo.title)
END

👉 Summary

If you want, I can also provide:

• A full CRUD example using JSON + HFSQL

• A REST client project template (WinDev UI + JSON)

• Comparison of the three different JSON approaches in WinDev

Just tell me!

Please also for mainframe z/OS

I would suggest to add also a parsing Json messages, as XML is parsed with the PARSE XML statement (or extend the PARSE XML to include PARSE JSON , as an option

It is still under review.

Hello,

I would to know if there is any progress in that issue.

Maybe a plan schedule or other?