From: Paul Stickney <pstickne@...>
Date: 2008-01-12T15:57:47+09:00
Subject: Re: problem with closure/block

> I think it's an advantage in javascript, that you have to mark new
> variables with "var", so the scope of a variable is always obvious.

JS doesn't have it right... if anything, I've seen it cause MUCH MORE
confusion wrt closures.
'var' is context-specific (only applies INSIDE functions, but
syntactically valid outside) and it is just a hint, not a declaration.
These are the same:

function a(z) { var x = z; return function () {return x} }
function b(z) { x = z; return function () {return x}; var x }

and:

var x = 10; // outside a function

is both misleading and useless.