AutoIt Requires Chilkat v11.4.0+

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)