Book Image

Mastering Backbone.js

By : Abiee Echamea, Abiee Echamea
Book Image

Mastering Backbone.js

By: Abiee Echamea, Abiee Echamea

Overview of this book

Backbone.js is a popular library to build single page applications used by many start-ups around the world because of its flexibility, robustness and simplicity. It allows you to bring your own tools and libraries to make amazing webapps with your own rules. However, due to its flexibility it is not always easy to create scalable applications with it. By learning the best practices and project organization you will be able to create maintainable and scalable web applications with Backbone.js. With this book you will start right from organizing your Backbone.js application to learn where to put each module and how to wire them. From organizing your code in a logical and physical way, you will go on to delimit view responsibilities and work with complex layouts. Synchronizing models in a two-way binding can be difficult and with sub resources attached it can be even worse. The next chapter will explain strategies for how to deal with these models. The following chapters will help you to manage module dependencies on your projects, explore strategies to upload files to a RESTful API and store information directly in the browser for using it with Backbone.js. After testing your application, you are ready to deploy it to your production environment. The final chapter will cover different flavors of authorization. The Backbone.js library can be difficult to master, but in this book you will get the necessary skill set to create applications with it, and you will be able to use any other library you want in your stack.
Table of Contents (17 chapters)
Mastering Backbone.js
About the Author
About the Reviewers

Two-way binding

Angular.js has been popularized as two-way data binding in the frontend; the idea behind two-way data binding is to keep views and models in sync. When you make a change in an input field the view the model should be updated immediately, and if you change a property in the model the view should show the current value immediately:

Figure 3.1 Two-way data binding with Backbone

Backbone does not provide a mechanism to achieve this easily; however, we can do it using the event system that Backbone models provide. Figure 3.1 shows how you can make an implementation.

Backbone.View listens for keyup and change events on input controls at the DOM; when a change is triggered from the DOM, Backbone.View can extract the new value from the input and set the Model:

class FormView extends ModelView {
  // ...

  events() {
    return {
      'click button[type="submit"]': 'saveContact',
      'keyup input': 'inputChanged',
      'change input': 'inputChanged'