Running Javascript with CScript?

Question

I'm trying to learn how to run Javascript (instead of VBScript) using CScript.exe, but when I try, I get an error:

cscript temp.js
Input Error: There is no script engine for file extension ".js".

I thought this is possible -- any idea what's wrong?

Answer 1

Setting the registry with regsvr32 did not work for me. Also, I don't want it, since I want my .js to be linked with a plain text editor.

But there is a command line option //E for cscript which makes the job:

cscript //E:jscript hello.js

Answer 2

A very simple fix: use assoc.

c:\>assoc .js=JSFile

(Mine had become associated with a text editor at some point.)