Book Image

Backbone.js Cookbook

By : Vadim Mirgorod
Book Image

Backbone.js Cookbook

By: Vadim Mirgorod

Overview of this book

<p>There is no doubt that the superior rendering power of HTML5, thin-to-thick client transition and REST style communication created a new era in web development, replacing the outdated approach based on browser plugin technologies. Backbone.js allows developers to write lightweight, modular, and scalable JavaScript applications.<br /><br />Backbone.js Cookbook contains a series of recipes that provide practical, step-by-step solutions to the problems that may occur during frontend application development using an MVC pattern. You will learn how to build Backbone applications utilizing the power of popular Backbone extensions and integrating your app with different third party libraries. You will also learn how to fulfill the requirements of the most challenging tasks.<br /><br />The first chapter of the book introduces you to the MVC paradigm and teaches you how to architect rich Internet applications operating with basic concepts of Backbone.js. During the reading of this book you will learn how to solve challenging problems leveraging Backbone objects such as models, collections, views, routers, and so on.</p> <p><br />You learn how to use forms, layouts, templating engines, and other Backbone extensions, which will help you to complete specific features of your application. You will understand how to bind a model to a DOM element. You will see how perfectly Backbone.js integrates with third party libraries and frameworks such as jQuery, Zepto, Underscore.js, Require.js, Mustache.js, Twitter Bootstrap, jQueryMobile, PhoneGap and many others. This book will guide you in how to optimize and test your applications, create your own Backbone extensions, and share them with the open source community.</p> <p><br />With the help of Backbone.js Cookbook, you will learn everything you need to know to create outstanding rich Internet applications using the JavaScript programming language.</p>
Table of Contents (16 chapters)
Backbone.js Cookbook
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Adding a model to a collection


In this recipe, we are going to learn different ways of adding new models to a collection.

How to do it...

Call the add() method to add a new model to the end of a collection.

invoiceItemCollection.add
  ({
    description: 'Toy Track',
    price: 10,
    quantity: 1
  });

How it works...

The code in the add() method prevents duplicates from being added to the collection. A unique model is inserted into the models array and is mapped to its ID in the _byId array. Also, a reference to the collection is created in the model object in the collection property.

By default, a new model is added to the end of the collection. But in case sorting is enabled, or insertion index is specified, the model can be inserted at a different position.

When adding a new model to a collection, the add event is being triggered.

There's more...

In this section, we are going to learn different ways to add a model(s) into a collection.

Adding a model at a specific position

To add a model at a...