How to pass variable from batch to Javascript

Question

I have a batch file which checks how many picture are in a folder. How can I return this value back to the JavaScript which calls the batch file?

dir /B /A-D /S "C:\Users\Viktor\Desktop\Images\*.jpg" | find /N /C /V ""
pause

Here is the code which runs the batch file from JavaScript:

var file        = null;
var process     = null;
var args        = [""];

// create an nsIFile for the executable
file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsIFile);
file.initWithPath("C:\\Users\\Viktor\\Desktop\\file.bat");

// create an nsIProcess
process = Components.classes["@mozilla.org/process/util;1"].createInstance(Components.interfaces.nsIProcess);
process.init(file);

// Launch the process
process.run(false , args, args.length);

As your folder in on your desktop, I assume you want to get this value from your browser... that's not possible. — Pierre C.
– Pierre C., Commented Aug 2, 2016 at 13:54
What do you mean by "pass to JavaScript"? This isn't very clear. Copy and paste the results into a JS file? shrugs Unless those pictures are inside a web, then it's not likely you'd even be able to do this server side. — ManoDestra
– ManoDestra, Commented Aug 2, 2016 at 13:55
@Pierre C I have a code that runs Batch file from Js and i'm getting amount of pictures from folder i want pass this parametr to js variable, updated code — Andrew
– Andrew, Commented Aug 2, 2016 at 13:58

Poker Joker · Accepted Answer · 2016-08-03 07:19:46Z

2

I don't know why you need this batch file when you can use only your browser and imacros .js

Open the folder in your browser: file:///C:/Users/Viktor/Desktop/Images/

then run this .js in iMacros:

var img = new Array();

iimPlayCode("TAG POS=1 TYPE=BODY ATTR=* EXTRACT=TXT");

img = iimGetExtract().split(".jpg");

alert(img.length-1);

answered Aug 3, 2016 at 7:19

Poker Joker

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Comments

Michael Haephrati · Accepted Answer · 2019-09-22 16:16:02Z

1

You can redirect the result of the dir command into a new HTML file using the following syntax:

dir /B /A-D /S "C:\Users\Viktor\Desktop\Images\*.jpg" | find /N /C /V "">>yourFile.html

That will write the .bat result into your html.

edited Sep 22, 2019 at 16:16

Michael Haephrati

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answered Sep 22, 2019 at 15:54

Ihuda Bunzl

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Comments

sambul35 · Accepted Answer · 2016-08-02 18:27:01Z

0

To return a variable value back to JavaScript, try re-starting your JavaScript file from that batch with found variable value as an argument. In the JavaScript file add a switch to bypass calling the batch again if that argument is defined.

answered Aug 2, 2016 at 18:27

sambul35

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