(Xojo Plugin) Eval JavaScript Returning Int

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

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Dim success As Boolean
success = False

// 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.
Dim sbScript As New Chilkat.StringBuilder
success = sbScript.LoadFile("js_eval_return_int.js","utf-8")
If (success = False) Then
    System.DebugLog(sbScript.LastErrorText)
    Return
End If

Dim js As New Chilkat.Js
Dim result As New 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.
success = js.Eval(sbScript,result)
If (success = False) Then
    System.DebugLog(sbScript.LastErrorText)
    Return
End If

result.EmitCompact = False
System.DebugLog(result.Emit())

// Output:

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

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

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