Backbone.js Handling of Attributes That Are Arrays

Question

I really like Backbone, but I am having the hardest time doing what would seem to be simple things. I appreciate any help with the following example.

I have a model,

Answer 1

To be clear, the last option provided by Maksym H. will not solve the problem. The defaults property is provided assuming all of the values set are immutable. An array, however, is mutable, meaning its value can be changed (e.g. tags[0] = "hello" can be changed with tags[0] = "hi there").

By using btford's answer, you are forcing a new instance of any mutable object/property to be created on every new instance of the model, so it is never shared, because the object is created with a function scoped variable.

Similarly, Derick Bailey's answer is correct, it just uses the initialize method instead of the defaults method.