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Call a JavaScript Function Passing an Object Argument

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Demonstrates how to call a JavaScript function with an argument that is an object. AutoIt

Local $bSuccess = False

; This is the JavaScript function we'll call:

; function describeCar(car) {
; 	console.log(`This is a ${car.year} ${car.make} ${car.model}.`);
; }

$oSbScript = ObjCreate("Chilkat.StringBuilder")
$oSbScript.Append("function describeCar(car) { console.log(`This is a ${car.year} ${car.make} ${car.model}.`); }")

$oJs = ObjCreate("Chilkat.Js")

$oResult = ObjCreate("Chilkat.JsonObject")
$oResult.EmitCompact = False

; Call Eval to add the function to the context's global object
$bSuccess = $oJs.Eval($oSbScript,$oResult)
If ($bSuccess = False) Then
    ; Examine the result for an exception.
    ConsoleWrite($oResult.Emit() & @CRLF)

    ; Also examine the LastErrorText.
    ConsoleWrite($oJs.LastErrorText & @CRLF)
    Exit
EndIf

; ------------------------------------------------------------------------------
; Call the function describeCar(car)

$oFuncCall = ObjCreate("Chilkat.JsonObject")
$oFuncCall.EmitCompact = False

; Create JSON specifying the function name and arguments
; In this case, there is only 1 argument, and it is an object.

; {
;   "name": "describeCar",
;   "args": [
;     {
;       "make": "Toyota",
;       "model": "Corolla",
;       "year": 2022
;     }
;   ]
; }

$oFuncCall.UpdateString("name","describeCar")

; Create the JSON object that is the argument.
$oArg = ObjCreate("Chilkat.JsonObject")
$oArg.UpdateString("make","Toyota")
$oArg.UpdateString("model","Corolla")
$oArg.UpdateInt("year",2022)

; Create the arguments array.
$oArgsArray = ObjCreate("Chilkat.JsonArray")
$oArgsArray.AddObjectCopyAt(0,$oArg)

; Add the "args" array to the funcCall.
$oFuncCall.AppendArrayCopy("args",$oArgsArray)

ConsoleWrite($oFuncCall.Emit() & @CRLF)

$bSuccess = $oJs.CallFunction($oFuncCall,$oResult)
If ($bSuccess = False) Then
    ; Examine the result for an exception.
    ConsoleWrite($oResult.Emit() & @CRLF)

    ; Also examine the LastErrorText.
    ConsoleWrite($oJs.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite($oResult.Emit() & @CRLF)

; The describeCar JavaScript function returns nothing. 
; Therefore, the result is "undefined".

; {
;   "type": "undefined",
;   "value": "undefined"
; }

; However, the function emitted text to the console.

$oSbOut = ObjCreate("Chilkat.StringBuilder")
$oJs.ConsoleOutputSb $oSbOut
ConsoleWrite($oSbOut.GetAsString() & @CRLF)

; Output:
; This is a 2022 Toyota Corolla.

; -----------------------------------------------------------
; Note: If the object argument is simple, this is an alternative
; and simpler way of creating the funcCall:

$oFuncCall.Clear 
$oFuncCall.UpdateString("name","describeCar")
$oFuncCall.UpdateString("args[0].make","Toyota")
$oFuncCall.UpdateString("args[0].model","Corolla")
$oFuncCall.UpdateInt("args[0].year",2022)
ConsoleWrite($oFuncCall.Emit() & @CRLF)