java keywords in javascript

Question

according to this page http://www.quackit.com/javascript/javascript_reserved_words.cfm javascript has some keywords which are from java, reserved. I also notice that with the highlighting in my editor. Is this to be future proof? Are they planning to implement some more OOP style operators into javascript?

I would love to se interfaces, abstract classes and things like that coming to js, but does the reservation of these words indicate anything?

Answer 1

From the ECMA-262 spec, §7.6.1.2 (Future Reserved Words):

And, from §2 (Conformance):

A conforming implementation of ECMAScript is permitted to support program and regular expression syntax not described in this specification. In particular, a conforming implementation of ECMAScript is permitted to support program syntax that makes use of the "future reserved words" listed in 7.6.1.2 of this specification.