JavaScript: Writing to File?

[Adam P]

Is there any way to write to a file using JavaScript / JScript from EA?

[Eve]

Both JScript and JavaScript in EA can create an ActiveX object. For Javascript you'll find an example under the simulation section of the help.

See http://msdn.microsoft.com/en-us/library/aa242706%28v=vs.60%29.aspx for the object to create and how to use it.

[Adam P]

Thanks, that produces the error "CreateObject is not defined" (and a similar error with ActiveXObject). Is there some package I have to import?

[Geert Bellekens]

For JScript you have to use "new ActiveXObject" similar to this:

Code: [Select]

var openFileDialog = new ActiveXObject("MSComDlg.CommonDialog");
For JavaScript use "new COMObject" similar to this:

Code: [Select]

var obj = new COMObject("WMPlayer.OCX");
See also http://www.sparxsystems.com/cgi-bin/yabb/YaBB.cgi?num=1256123373/1#1

Geert

[Adam P]

Thanks again, looks like I'm getting closer. I now get the error "Failed to create object from CLSID". I tried both "Scripting.FileSystemObject" and ""{0D43FE01-F093-11CF-8940-00A0C9054228}" (which is the CLSID for Scripting.FileSystemObject). I also confirmed that the CLSID is in the registry and associated with Scripting.FileSystemObject and scrrun.dll, and that scrrun.dll is in the Windows\System32 folder.

Can someone else drop these lines into a new JavaScript file and see if it works for them?

      var fs = new COMObject ("Scripting.FileSystemObject")
      var fs = new COMObject ("{0D43FE01-F093-11CF-8940-00A0C9054228}")

Any other suggestions from the pros on ways to write to a file from JavaScript or get COM to work?

Thanks again.

[Eve]

It's possible that it's blocked by Windows (because it's a potential security hole in IE) can't remember the details.

[Geert Bellekens]

I seem to have the same problem in JavaScript, but not in Jscript.

This code works in Jscript

Code: [Select]

function main()
{
      var fso = new ActiveXObject("Scripting.FileSystemObject");
      a = fso.CreateTextFile("c:\\temp\\testfile.txt", true);
      a.WriteLine("This is a test.");
      a.Close();
}

main();
Geert

[Adam P]

After installing the Microsoft Script Debugger that works.

Thanks again, I really appreciate the help.