Unexpected behavior if you try to treat backbone model instances in a classical OO fashion

[jdkanani]

See the snippet @ http://jsfiddle.net/ZxuFQ/4/

We would traditionally expect that hashmap2 would contain only the values {4,5,6}. However it contains {1,2,3,4,5,6}

Surprisingly if you do this:

http://jsfiddle.net/SaaJz/4/

the behavior is as one would expect!

[jashkenas]

It's JavaScript. Properties on the prototype are shared by reference ... just like class-level properties would be shared the same way in Ruby.

If you'd like to have a different hash for each instance, define defaults as a function, as documented.

[braddunbar]

Hi @jdkanani, thanks for your issue. This is already being discussed in #476. Would you mind directing further comments there? Thanks!