Welcome to the NGS JavaScript interpreter. The NGS JavaScript is a GPL free interpreter for the JavaScript language. The original implementation dates from the 90s when JavaScript was only used in the Netscape Web browser. Fast forward 20 years, and the latest edits update the build environment to support modern operating systems.

The NGS JavaScript interpreter is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details.

You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

This implementation is not 100% compatible with the JavaScript language found in Netscape's WWW browsers and servers. To achieve the following design goals, some shortcuts have been taken in the implementation compared to Netscape's implementation.

This implementation is designed to be:

• re-entrant: the interpreter can be safely used in multi-threaded environments

• extendible: the interpreter API allows user-defined commands and classes, and it allows reading and setting language's global variables

• fast: the JavaScript code is compiled to byte-code that is executed by a virtual machine

• programmable: it should be easy to implement large projects with the language

The WWW home page of the NGS JavaScript interpreter is at Github.

Please note that the current version is a work in progress. It contains bugs, and many features still need to be implemented.

Comments, suggestions, bug reports and fixes, feature wishes, etc. are welcome.

Markku Rossi [email protected]