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Akshar Prabhu Desai

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How can I create singleton Modules through Y.Base ?

Post Posted: Wed Jun 20, 2012 8:16 am
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I want some of my modules to be singleton. Generally in OOP this is achieved my making the constructor private. How do I do this in YUI3?

Juan Ignacio Dopazo

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Re: How can I create singleton Modules through Y.Base ?

Post Posted: Wed Jun 20, 2012 8:49 am
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Singletons aren't necessary in JavaScript because you can create simple objects easily and those objects are mutable. In this case just create an instance of Y.Base, modify it and that's it.
Code:
var myObject = new Y.Base();
myObject.addAttrs({
  attrName: attrConfig
});
myObject.someMethod = function () {};

Nick Husher

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Re: How can I create singleton Modules through Y.Base ?

Post Posted: Wed Jun 20, 2012 9:36 am
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Alternatively:

Code:
var mySingleton = new (Y.Base.create('my-singleton', Y.Base, [], { /* object methods */ }, { /* static properties */ });


This will create a single instance of a Y.Base subclass and obfuscate the constructor of that instance.

I've gone down this road before, and generally I've found singletons to be less useful than they might be in other languages.
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