How to Run JavaScript on Apache. While Javascript is a client-side executing coding language, it still has to have permission from the Apache Web server in order to run properly.

The compiled JavaScript files are smaller than your original JavaScript files, reducing download times for your website's visitors.

However, opening an unknown JS file on Windows can be dangerous, as it runs inside Windows Script Host by default. From there, the script can easily run Windows executables.

A high school student found a way to run the classic PC game Doom from within a PDF file by leveraging the format's support for JavaScript and the Chromium browser engine.