Echo JS 0.11.0

The article contains a couple of mistakes and also shows code examples in which the semicolon is omitted as far as it is possible for the code not to break - which is an opinionated approach only recently brought in by js blow-ins from the ruby camp.
Which would be fine except that the article is titled "javascript fundamentals", clearly aimed at people learning the language so why teaching it wrong? I didn't downvote this but i really felt like it.