How to migrate older ECMAScript 5.1 code to ECMAScript 2021+

[JustinG]

This has fallen a little out of date, but the basics are here:

Migrate from Nashorn to JSScripting for UI Rules

This tutorial is going to be somewhat of a living document as there is a lot changing even as I type this. I will return and update it as things change and try to keep it up to date. It’s a little all over the place and not intended to be a complete tutorial on how to use JSScripting yet. For now, only if you want to be on the bleeding edge consider following this path. In a few weeks a lot of the below will change a bit, though I tried to cover that stuff too. For most consider this a preview …

Other than that you should look through the docs for the JSscripting helper library:

https://openhab.github.io/openhab-js/index.html