64 Bit Excel Vba to Call a Javascript Function

I need to use a VBA ScriptControl object to call a JavaScript function , but it gave me a "Class Not Registered" error. I have added Microsoft Script Control 1.0 from Tools->References I need to call JavaScript to get a JSON object from this Rest API to calculate values in an Excel Macro.

This post told me that ScriptControl is for use in 32 bit only. I am using 64 bit Excel. I also tried using the method mentioned in this link but it didn't work since VBA doesn't recognise the ActiveXObject

My Excel VBA code to call a simple JS function:

Private Sub CommandButton1_Click()
    Dim jsObj As MSScriptControl.ScriptControl, result As Integer
    Set jsObj = CreateObject("MSScriptControl.ScriptControl")
    jsObj.Language = "JScript"
    With jsObj
        .AddCode ("function prod1(a,b){return a*b;}")
        result = .Run("prod1", 2, 3)
    End With
    MsgBox result
End Sub

I am getting a class not registered error for the line Set jsObj = CreateObject("MSScriptControl.ScriptControl") Is there an alternate way to call a JavaScript function from VBA? Or am I missing something?

3

1 Answer

There's no need for a ScriptControl object: you can use XMLHTTP and VBA-JSON.

For example:

Public Sub Tester()

    'Import the "JsonConverter.bas" file from 
    '     
    'and add a reference to the Microsoft Scripting Runtime library
    Dim http As Object, JSON As Object, i As Integer, o As Object, k

    Set http = CreateObject("MSXML2.XMLHTTP")
    http.Open "GET", "" & _
          "function=CURRENCY_EXCHANGE_RATE&from_currency=USD" & _
          "&to_currency=JPY&apikey=demo", False

    http.Send

    Debug.Print http.responseText
    Debug.Print "-----------------------------------"

    Set JSON = ParseJson(http.responseText)

    Set o = JSON("Realtime Currency Exchange Rate")
    For Each k In o.keys
        Debug.Print k, o(k)
    Next k

End Sub

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Maya Lin-Takahashi

Maya Lin-Takahashi

Consumer Tech & Gadget Reviewer

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.

Share this article
Twitter Facebook Pinterest