Which Javascript Standards Version and Javascript Language Reference should be used?

Thr 2018.09.27

I should have asked this question a year ago.

From: http://www.espruino.com/FAQ

'we do implement as standards-compliant as possible'

and reference link http://www.espruino.com/Reference

which refers to 'View MDN documentation'

which doesn't have a language reference as such but refers to ECMAScript, many versions

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/About
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference

and MDN appears to mix versions in their own examples and snippets.


We have Jscript, LiveScript, ActionScript, ECMAScript, Vanilla Javascript to name a few, and now for microcontrollers, the Espruino flavor. @allObjects did I leave out any?

ref: https://en.wikipedia.org/wiki/JavaScript

The Espruino function reference, which is not a language reference

http://www.espruino.com/Reference#hardware

So as to reduce the number of questions to be asked, what are the links to the reference material that covers both the Javascript Standards (which version) and the Javascript Language Reference that should be followed for development on the Espruino platform?

Using those links and for others that are starting out, please embellish the FAQs page under heading 'Is Espruino 100% JavaScript compatible?'

EDIT Sun 2018.09.30
Ref #4 below

@Gordon
Ok, features table is now here: http://www.espruino.com/Features