Standardizing __proto__

Mike Shaver mike.shaver at gmail.com
Fri Mar 18 10:56:54 PDT 2011


On Fri, Mar 18, 2011 at 10:45 AM, Oliver Hunt <oliver at apple.com> wrote:
> I think so -- my proposal doesn't take instances, nor produce instances, it takes the constructor function (Image is one of a handful of DOM constructor that can actually be used to construct things) and returns a new constructor that will produce an instances of the target object with a modified prototype chain.

Andreas in IM that we hang it on the prototype chain, so that we get
it everywhere without repetitive specification.  How about:

Function.prototype.createDelegatingTo = function (obj)
{
  var o = new this; // really new-with-apply(arguments) here
   o.__proto__ = obj;
   return o;
}

Then Array.createDelegatingTo, Boolean.createDelegatingTo, Image, etc.
should all work.  (I like the longer, grosser name because I think
it's sort of a gross pattern, and not something that should use up a
concise name.)

Mike


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