There's no built-in garbage collection for Backbone’s event bindings, and forgetting to unbind can cause bugs and memory leaks.
Backbone Support currently provides CompositeView,
that introduce a leave() function, which unbinds and cleans up the view.
They should be used where views are instantiated (in composite views).
CompositeView provides a convention for a parent view that has one or more child views.
This introduces a convention that all views have a leave() function,
responsible for unbinding and cleaning up the view.
CompositeView provides methods for adding and removing children from the
parent view.
CompositeView maintains an array of its immediate children as
this.children. Using this reference, a parent view's leave()
method will invoke leave() on all its children, ensuring that an entire
tree of composed views is cleaned up properly.
For child views that can dismiss themselves, such as dialog boxes, children
maintain a back-reference at this.parent. This is used to reach up and call
this.parent.removeChild(this) for these self-dismissing views.
You'll need these, but chances are you already have them in your app:
- jQuery or Zepto
- Underscore
- Backbone
Copyright 2012 thoughtbot. Please check LICENSE for more details.