Thanks, combining this code with Object.create seems to be working
fine for all test cases I have tried so far. I could even copy DOM
nodes.
global.copy = function(refObject) { var newObject =
Object.create(refObject.proto); var property; var descriptor;
var properties = Object.getOwnPropertyNames(refObject);
properties.forEach( function(property) { descriptor =
Object.getOwnPropertyDescriptor(refObject, property);
Object.defineProperty(newObject, property, descriptor) });
return newObject;}
On Wed, Nov 30, 2011 at 10:11 PM, Jake Verbaten <rayn...@gmail.com> wrote:
> https://gist.github.com/1410832
>
> function clone(o) {
> var pds = {};
> Object.getOwnPropertyNames(o).forEach(function _eachName(name) {
> pds[name] = Object.getOwnPropertyDescriptor(o, name);
> });
>
> return Object.create(Object.getPrototypeOf(o), pds);
> }
>
> The naive clone simply gets its own property descriptors and the prototype
> and returns a new object thats the combination of the two.
>
>
> There are a ton of edge cases that break here. Like no deep copying, no
> copying array / functions, no copying proxies, etc
>
>
> I highly recommend you avoid the "holy grail" of the perfect deep copy
> because it's a nightmare.
>
>
> Stick to shallow clones.
>
>
>
>
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