Backbone, the extend function and how does it work?

Question

backbone.js

Link to a piece of code backbonejs.org/docs/backbone.html#section-209
Gentlemen, explain how this piece of code works.

...
} else {
  child = function(){ return parent.apply(this, arguments); };
}

I don't understand how the child passed in _.extend(child, parent, staticProps);acts as an object and not a function, which also hasn't been executed.

Answer 1

In Javascript, a function is also an object, you can do the same operations with it as with other objects.