On Tue, Mar 31, 2009 at 3:32 PM, Kasper Lund <[email protected]> wrote:
> Super quick and very short reply: You can't change the prototype of an
> instance by assigning to the "prototype" property. You need to write
> to the (magical) __proto__ property, which is supported - though not
> encouraged - by V8.
My gawd, it works:
function SubType()
{
this.__proto__ = new MyNative();
print('proto =',this.prototype,'str=',this.str);
return this;
}
var sub = new SubType();
sub.str = "sub.str";
var sub2 = new SubType();
sub2.str = "sub2.str";
print(sub.str,sub2.str,sub.me(),sub2.me());
print(sub.hi(),sub2.hi());
print( sub2 instanceof MyNative );
Cool!
i know this is a magic/unportable solution, but is there any real
likelyhood that __proto__ will be removed, or only be available with
certain build- or context-specific options? Or is there another
(portable, though possibly hackish?) approach to doing this?
Thank you, Kasper!
--
----- stephan beal
http://wanderinghorse.net/home/stephan/
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