How to check if the * .js file is JScript or JavaScript?

Question

I want to use *.js file both: on local web page on my pc (as JavaScript) and as WSH JScript when I double click *.js file. Is it possible to write a code running on both platforms?

How to check is running JS file is JavaScript or Microsoft JScript?

I tried this, but it doesn't work:

if (typeof(document) == "undefined")
    alert('WSH Script!');
    WScript.Quit;
}
else {
    document.writeln('Hello world');
}

Answer 1

1. You can check if WScript object exists e.g

   if (typeof WScript === 'object')

2. Quit is a function so you should call it, e.g

   WScript.Quit();