How to run JavaScript using jsc on OS X?

Question

I got this when I was trying to find some way to run my JavaScript programs through terminal. The run and load command mentioned can execute external J

Answer 1

NOTE for MacOS Catalina (10.15.x) users

jsc now lives on a new path:

/System/Library/Frameworks/JavaScriptCore.framework/Versions/A/Helpers/jsc

Make that adjustment to @hurrymaplelad's instructions and you'll be good to go.