why do bindAll in backbone.js views?

Question

In backbone\'s todo demo the code has a few spots where _.bindAll(this,...) is used. Specifically it\'s used in the initialize function of both vie

Answer 1

As of Backbone 0.5.2, it's no longer necessary to use _.bindAll(this...) in your views to set the context of the "bind" callback functions, as you can now pass a 3rd argument to bind() that will set the context (i.e. "this") of the callback.

For example:

var MyView = Backbone.View.extend({
  initialize: function(){
    this.model.bind('change', this.render, this);
  },
  render: function(){
    // "this" is correctly set to the instance of MyView
  }
});