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From: Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups: comp.lang.javascript
Subject: Re: Standalone Jscript script
Date: Thu, 01 Jun 2017 16:41:28 +0100
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"Dave \"Crash\" Dummy" <invalid@invalid.invalid> writes:

> Although I work mostly with VBScript I have no problem writing
> Javascript scripts for web pages. What I can't do is get the simplest
> standalone jscript to run in Windows 10:
>
> test.js
> -----------------
> alert("Hello, World!");
> -----------------
>
> I get an error for "object required."
>
> If I try
> window.alert("Hello, World!");
>
> or
> document.alert("Hello, World!");
>
> I get a window or document undefined error. The only thing I
> can get to work is a HTA workaround kluge:
>
> test.hta
> --------------
> HTA:Application windowstate="minimize" showintaskbar="no">
> <script type="text/jscript">
> alert ("Hello, World!");
> self.close();
> </script>
> ---------------
>
> What am I missing?

Nothing.  Most standalone JS implementations won't provide an object
with an alert method.  If the HTA way works for you, then use that.  If
not, see what is provided and work with that instead.  This called the
host environment and is not part of the language itself.

For example, nodejs provides the console object that can be used to
generate simple output messages and comes with a number of libraries to
do more sophisticated things.

-- 
Ben.