Backbone.js Patterns and Best Practices

A onestop advisor to most sensible practices and layout styles while development functions utilizing Backtbone.js

About This Book

  • Offers options to universal Backbone.js similar difficulties that almost all builders face
  • Shows you the way to take advantage of customized widgets, plugins, and mixins to make your code reusable
  • Describes styles and most sensible practices for giant scale JavaScript program structure and unit trying out purposes with QUnit and SinonJS frameworks

Who This booklet Is For

This publication is for JavaScript builders who paintings with Backbone.js and wish to profit the easiest layout styles to enhance complicated net functions. simple wisdom of Backbone.js and JavaScript is essential.

What you are going to Learn

  • Develop customized plugins and mixins to minimize boilerplate on your code
  • Learn approximately spine view administration with nested perspectives, subviews, structure supervisor, and Marionette views
  • Understand template administration via storing and pre-compiling templates
  • Explore version validation with validation plugins and research version serialization and relational information administration with nested models
  • Work with collections to enforce a number of sorting and filtering behavior
  • Create strong program structure with AMD and various renowned layout patterns

In Detail

Backbone.js is an excellent mild framework in order to constitution your JavaScript codes in an MV* type. This framework is a superb device by way of developing an geared up and modular code base for net apps of any dimension or complexity. even supposing light-weight, Backbone.js leads to plenty of boilerplate. studying the simplest practices and layout styles might help you stay away from those difficulties and let you make sure that the simplest criteria are followed.

Backbone.js styles and top Practices is filled with examples to help you paintings with Backbone.js parts. It additionally supplies recommendations to universal difficulties confronted by way of builders. It offers a whole evaluate of plugin improvement, huge scale program structure, and unit checking out as well.

Starting with a dialogue of why decreasing boilerplate on your JavaScript code is key, Backbone.js styles and top Practices explains the way to implement reusability on your code by way of developing plugins and mixins. you'll find out about styles and top practices for spine perspectives, versions, collections, routers, and events.

You will become aware of strategies to universal difficulties that builders face via easy examples, and delve into the easiest open resource plugins on hand to resolve those difficulties once they come up. This booklet is a superb choice of layout and implementation styles to help you constitution and boost advanced Backbone.js functions easily.

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Events); // hearken to a customized occasion vent. on('customevent', function(){ [ ninety eight ] Chapter 6 console. log('Custom occasion fired'); }); // fireplace the development vent. trigger('customevent'); once we make the vent variable to be had on the application-level, it could paintings as a centralized occasion dispatcher to post and sign up for occasions. This development is named PubSub trend and is kind of worthwhile to be used in a module- or widget-based software structure. you want to comprehend the context the place it will be a good selection. An occasion dispatcher might be used in the event you both have too many parts to hear (as we observed relating to the login instance) or when you've got a few thoroughly unrelated items that have to speak with one another. the most challenge that you could be face whereas operating with a standard occasion dispatcher is that the variety of publishers and subscribers could get uncontrolled whilst too many occasions are registered via a unmarried occasion dispatcher. for instance, say we've got modules, consumer and corporate, and either the modules are subscribed to an occasion named addcomment at the occasion dispatcher individually; they're outlined as follows: vent. on('addcomment', consumer. addComment); vent. on('addcomment', corporation. addComment); discover that the development identify is identical, however the features to be known as are diversified. So, if you'd like one other subscriber to be notified for a similar occasion, you want to resolve all of the different subscribers of that occasion first after which put up the development. notwithstanding, there are a number of different basic suggestions to this factor, similar to developing a number of occasion dispatchers or utilizing assorted occasion namespaces. developing a number of occasion dispatchers Defining a separate occasion dispatcher for person modules or performance provides an answer to the matter we defined formerly: App. userVent = _. extend({}, spine. Events); App. documentVent = extend({}, spine. Events); Now, a similar occasion names for various dispatchers won't ever conflict: App. userVent. on('addcomment', person. addComment); App. documentVent. on('addcomment', corporation. addComment); [ ninety nine ] Working with occasions, Sync, and garage utilizing diverse occasion namespaces this can be so simple as following a selected naming conference whereas utilizing customized occasions: App. vent. trigger('before:login'); App. vent. trigger('after:login'); App. vent. trigger('user:add:comment'); including a colon within the occasion identify does not make the development distinctive, yet makes it diverse and certain since it now pertains to a few particular modules of the appliance. this can be a conference seriously utilized by JavaScript builders and we inspire you to take advantage of it at any time when required. heading off reminiscence leaks with the listenTo() strategy reminiscence administration is an important a part of any software. usually, for frontend improvement, builders don't trouble a lot approximately reminiscence leaks; in spite of the fact that, this does not carry actual once we strengthen unmarried web page frontend-heavy functions. most of these functions care for many frontend parts and the bottom variety of web page refreshes, which may create a number of possibilities for reminiscence leaks.

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