(PowerBuilder) Eval JavaScript Returning Int

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Note: This example requires Chilkat v11.4.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
integer li_Success
oleobject loo_SbScript
oleobject loo_Js
oleobject loo_Result

li_Success = 0

// This example demonstrates getting the completion value of a script,
// where the last evaluated expression is an integer.

// The Javascript run in this example is shown below.

// Load the JavaScript from a file.
loo_SbScript = create oleobject
li_rc = loo_SbScript.ConnectToNewObject("Chilkat.StringBuilder")
if li_rc < 0 then
    destroy loo_SbScript
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_SbScript.LoadFile("js_eval_return_int.js","utf-8")
if li_Success = 0 then
    Write-Debug loo_SbScript.LastErrorText
    destroy loo_SbScript
    return
end if

loo_Js = create oleobject
li_rc = loo_Js.ConnectToNewObject("Chilkat.Js")

loo_Result = create oleobject
li_rc = loo_Result.ConnectToNewObject("Chilkat.JsonObject")

// Run the JavaScript
// Eval returns the completion value of the script. This is generally the value of the last evaluated expression.
// In this case, the last evaluated expression is an int.
li_Success = loo_Js.Eval(loo_SbScript,loo_Result)
if li_Success = 0 then
    Write-Debug loo_SbScript.LastErrorText
    destroy loo_SbScript
    destroy loo_Js
    destroy loo_Result
    return
end if

loo_Result.EmitCompact = 0
Write-Debug loo_Result.Emit()

// Output:

// {
//   "type": "int",
//   "value": 42
// }


destroy loo_SbScript
destroy loo_Js
destroy loo_Result

const base = 10;
const multiplier = 4;
const offset = 2;

// The last line is a calculation resulting in an integer
// Returns 42.
(base * multiplier) + offset;