Book Image

Backbone.js Patterns and Best Practices

By : Swarnendu De
Book Image

Backbone.js Patterns and Best Practices

By: Swarnendu De

Overview of this book

Table of Contents (19 chapters)
Backbone.js Patterns and Best Practices
About the Author
About the Reviewers
Precompiling Templates on the Server Side

Using an event dispatcher

Notice one thing in the previous scenario: to listen to the loggedin event, all the other components of the application should have a reference to that loginView. Is this really required? It may seem to a few components that keeping a reference to loginView is irrelevant, but they have to do so because they need to listen to the loggedin event on this loginView object. Dependency injection in such a way can be painful even when you are developing a simple application. Sometimes we may need a common object that will play the role of a central event manager and can be used throughout the application to trigger and listen to events. The simplest event dispatcher can be defined in the following way:

var vent = _.extend({}, Backbone.Events);

// Listen to a custom event
vent.on('customevent', function(){
  console.log('Custom event fired');

// Fire the event

When we make the vent variable available at the application-level, it can work...