Using JScript and VBScript functions in the same script or HTA.


When I am developing new script, I usually use VBScript (or powershell but that’s another story).

but sometimes I already have some old functions written in JScript, that I need to use in my VBScript.

This is often if I am creating a HTA.

This code example shows how to use both languages in HTA:

Notice that the onclick on the button does not call

onclick = “jsMessage();”

but instead we call it by

onclick = “javascript:jsMessage();”

This tells the script to use the js function instead of the vbscript function.

therefore you have full control, even if both VBscript and JScript contains a function by the same name.

By |2011-04-04T12:31:30+00:00April 4th, 2011|Scripting & Development|1 Comment

About the Author:

Jakob Gottlieb Svendsen

Twitter: @JakobGSvendsen

Jakob Gottlieb Svendsen is a Microsoft Cloud and Data Center Management MVP (, Working as Global Lead Developer, Senior Consultant and Trainer at CTGlobal, where he is one of the driving forces in keeping CTGlobal a System Center Gold Partner and member of the System Center Alliance.

Since he started at Coretech in 2007, he has focused on Scripting and Development, primarily developing tools, extensions and scripts for the System Center Suite. His main area is Automation (including OMS/Azure Automation, Service Management Automation, PowerShell and Orchestrator). Another area is Windows Azure Pack / Azure Stack, where he does implementation, development, workshops and presentations. He is a world-wide renowned voice in the Automation field.

He is passionately devoted to the community, to which he contributes by being a moderator at TechNet and sharing his knowledge at

  • Co-founder: PowerShell User Group Denmark
  • Speaker at MMS 2016, Minneapolis (
  • SCU Europe 2014, 2015, 2016 (
  • Microsoft TechEd North America 2014, Houston
  • NIC 2012,2013,2014,2015, Oslo (
  • Microsoft CampusDays 2011, 2013, Copenhagen
  • Microsoft TechDays 2015, Sweden (
  • Microsoft Partner Event: New in SC2012 SP1
  • User group meetings (PSUG.DK , SCUG.DK/BE/NO, AZMUG + more)
  • Microsoft Certified Trainer.
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Main working areas:

  • Automation (Azure Automation, SMA, SCO)
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  • Development:C#.Net, VB.NET, VBScript, PowerShell, Service Manager, OpsMgr, ConfigMgr
  • Orchestrator
  • Windows Azure Pack / Azure Stack


  • Azure Automation
  • Service Management Automation
  • System Center Orchestrator
  • PowerShell, VBScript, C#.Net, VB.Net
  • Windows Azure Pack / Azure Stack Development Workshops

One Comment

  1. Don October 8, 2018 at 6:25 - Reply

    Good day..
    When I run this code, I get an error after the JavaScript portion displays its alert….

    what would cause the following error? what is needed to address it?

    Uncaught ReferenceError: vbMessage is not defined
    at jsMessage
    at HTMLInputElement.onclick

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