VBScript

Eval JavaScript Returning String

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Demonstrates getting the completion value of a JavaScript that returns a string. VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

'  This example demonstrates getting the completion value of a script,
'  where the last evaluated expression is a string.

'  The Javascript run in this example is shown below.

'  Load the JavaScript from a file.
set sbScript = CreateObject("Chilkat.StringBuilder")
success = sbScript.LoadFile("js_eval_return_string.js","utf-8")
If (success = 0) Then
    outFile.WriteLine(sbScript.LastErrorText)
    WScript.Quit
End If

set js = CreateObject("Chilkat.Js")
set result = CreateObject("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 a string.
success = js.Eval(sbScript,result)
If (success = 0) Then
    outFile.WriteLine(js.LastErrorText)
    WScript.Quit
End If

result.EmitCompact = 0
outFile.WriteLine(result.Emit())

'  Output:

'  {
'    "type": "string",
'    "value": "Ready for Chilkat.Js"
'  }

outFile.Close

JavaScript

var status = "Ready";
var system = "Chilkat.Js";

// The last statement is an expression
status + " for " + system;