Remove a Backbone view and make it listen/trigger events

bb.view.extend.js

/*
Make views listen and trigger events.
We wrap it under `ev` to avoid name conflicts.

Eg:
myView.ev.trigger('update');
myView.ev.on('update',function(){
  console.log('view updated');
})
*/
Backbone.View.prototype.ev = _.extend({}, Backbone.Events);

/*
Remove a view and all events associated to it.
Useful to avoid having zombie views.

myView.close();
myView.ev.on('close',function(){
  console.log('view closed');
})
*/
Backbone.View.prototype.close = function(e){
  if(e && e.preventDefault) e.preventDefault();

  try{
    this.ev.trigger('close');
    this.ev.off();
  } catch(err) {}

  this.remove();
  this.unbind();
  
};