theGleep

I like w3schools as my "go to" reference, but when I want to look up javascript *language* features, I can never find them. I can find *object* features, like Array, Function, DOM and HTML Elements; but I can't find *language* elements like keywords (var, let ... today's word is "yield") and flow-control (loops) and decision (if/then). Is there a reason this is the case?