Comments on: Fully Working Javascript First Class Interfaces Are Possible!

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By: webactivex

webactivex — Tue, 16 Dec 2008 18:59:16 +0000

Excellent, that method could be used here as well, one of the differences between what I do and a method found in the pro-javascript design patterns (which is the one that you have described) book is that I do not loop through all of the methods (which can be CPU intensive). Instead an actual interface object is created, and passed back, which you end up using at the end of the day as your interfaced object. Though that is not to say that one could not implement such a thing on the example provided.

By: Tek

Tek — Tue, 16 Dec 2008 18:41:03 +0000

@Scott> Take a look at : http://code.google.com/p/objs/

It’s a project I have started to better use OOP with Javascript. My library iterates over methods of the interface to check that each is well implemented : http://code.google.com/p/objs/source/browse/trunk/objs/objs_1_0.js#289 at line 289. It’s rudimentary but simple and has proven efficiency on a project I’ve worked on.

By: webactivex

webactivex — Sat, 29 Nov 2008 15:24:50 +0000

You are able to do this with static json objects as well. In-fact this code could possibly be optimized even more with a pattern utilizing clone instead! Either way it would probably work excellently!

var x = {blah:function(){alert(’wee’);}}
var p = new Interface(x,new TestInterface());

By: Scott Krutsinger

Scott Krutsinger — Sat, 29 Nov 2008 02:31:05 +0000

Great job on this ad I’m glad to see that there are others extending the realms of OOP JavaScript.

However…

I’ve worked on JavaScript interface designs as well. What I found is that the client side performance cost of creating them is too great. Building an object in JSON is the fastest. OOP encapsulation is the slowest and attempting to add an interface makes it even more so.