This is my port of Mozilla's open-source "SpiderMonkey" JavaScript
interpreter. In the archive is an executable called "js" which can
be run interactively or as a command to execute JavaScript files.
Also included is the general README.html from the original SpiderMonkey
distribution.
SpiderMonkey is generally intended to be used as a shared library and
embedded in other applications, but it comes with a command-line
interpreter for testing and learning.
Andreaaaa ti può essere utile ?

http://aminet.net/package/dev/lang/SpiderMonkey-js-bin