Subclassing Javascript Arrays. TypeError: Array.prototype.toString is not generic

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Juriy Zaytsev (@kangax) just today released a really good article on the subject.

He explores various alternatives like the Dean Edwards iframe borrowing technique, direct object extension, prototype extension and the usage of ECMAScript 5 accessor properties.

At the end there is no perfect implementation, each one has its own benefits and drawbacks.

Definitely a really good read:

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