This article is garbage. Comes out swinging at JS without knowing JS.
jQuery.fn.each?
_.each?
Comparing an each to a map… is that JavaScript's fault?
Hand-writing a map/filter/reduce function?
This author of this post doesn't seem to know ES5 exists.
You are right.
And trying to give the benefit of the doubt, I thought that maybe he was only ignorant of those and wasn't his intent to be a troll.
But then I found this line at the end:
"Never forget that Javascript hates you".
sigh.