On Wednesday, June 20, 2012 at 10:15 PM, Dominic Tarr wrote:

> prototype chains and closure scopes actually work in a precisely similar way.
> 
> 


This is egregiously incorrect. Before you give out advice, I beg you to read 
the spec and actually understand the material. 
> 
> this gist gives some examples of identical structures created with
> scopes and prototypes.
> 
> 


The only thing they share in common is that they result in some property being 
assigned with some value on some object (in one case explicitly, the other 
implicitly) - their semantics are like night and day. A prototype definition is 
an object that exists exactly once in memory and is shared by bound referrence 
and resolved via upward lookup. A scope is an execution context representable 
by an object (eg |this|)

Rick

 
> 
> https://gist.github.com/2904285
> 
> 
> On Thu, Jun 21, 2012 at 7:34 AM, P. Douglas Reeder <[email protected]> 
> wrote:
> > Use the style that your team find most natural for the problem you're 
> > solving.  That will make it easier to fix bugs and add enhancements.
> > 
> > If profiling shows one part of your app is the bottleneck, consider 
> > rewriting it.
> > 
> > Other problems may make other styles more appropriate.
> > 
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