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Power Platform Community / Forums / Power Automate / Executing JavaScript
Power Automate
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Executing JavaScript

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Posted on by dragsdale 3

I am experimenting the PAD Scripts.  I got the "Run VBScript" to work, now trying the "Run JavaScript" action.

 

I expected the statement: console.log("Text Here") to populate the return variable "JavascriptOutput", but it thru an exception.  Based upon a response from another user, I tried using "WScript.echo("Text Here") and it worked.

 

From what I have read, 'WScript" is can be used in JScript or VBScript, but the description says "Run JavaScript".  I don't know if this is an error or what.  I am an experienced reactive web developer, so I would like to be able to leverage JavaScript when possible.  

 

dragsdale_0-1616161143238.png

Thanks.  I am excited by the potential of PAD, it could be another game changer.

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Power Automate Desktop
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  • Verified answer
    fraenK Profile Picture
    fraenK 2,125 on at

    As you already figured out yourself, the runtime understands JScript, which is a ECMAscript based dialect from Microsoft. Console.log isn't part of the original spec, that's why it doesn't work.

     

    You could run your JavaScript code within a browser of your choice with:

    https://docs.microsoft.com/en-US/power-automate/desktop-flows/actions-reference/webautomation#executejavascript

  • Community Power Platform Member Profile Picture
    Community Power Pla... Microsoft Employee on at

    A caution I just discovered with javascript outputting a variable from WScript.echo: this will append a CRLF to the end, and so when I was trying to concatenate strings into a filename box with the variable, it was sending an enter to the dialogue and exiting it. Was more difficult to find than I would have liked.

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