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Thankfully Packt just released a new book titled Mastering Backbone. Ruby on Rails developers might also consider the Thoughtbot e-book Backbone on Rails. The book is only available in digital form and comes with free source code available on a private GitHub repo.
However this book does have mixed reviews and might not be the best place to start without some foreknowledge. Video Tutorials Visual learners prefer to see how things work rather than read how they work.
Online tutorials and books are always helpful. But when just getting started with something like Backbone it can be incredibly frustrating to go at it alone with words on a page. Instead try following some of these free video tutorials.
First is this BB tutorial made for beginners who want to build single-page webapps. It runs over an hour long but if you follow it through to the end you should gain a much better understanding of Backbone.
Adding other technologies into your dev stack gives you a chance to merge Backbone into a real workflow and find what fits best for you. The website BackboneRails has its own video tutorial series teaching webapp development on top of Backbone and Rails.
There are definitely other great videos on YouTube if you know where to look. Nevertheless these are great to watch if you want to hear professional BB devs share their thoughts both philosophically and pragmatically. To get started I recommend this half-hour Intro to Backbone.
He covers the absolute basics of Backbone and why it fits well in modern web development. Equally as valuable is this talk given by Jeremy Ashkenas, the creator of Backbone. He explains the different aspects of Backbone and how they work together in JS-heavy webapps to create methodologies and workflows that ideally simplify your codebase.
JSConf hosts many conferences and their videos are always top-notch. The Backbone community even started its own conference which ran every year, but has recently dropped off the radar. The most recent BackboneConf took place in and every single presentation from that conference was uploaded to a YouTube playlist for free.
Some of the videos may be overly-complex for beginners. Aside from their own events, collections also proxy through all of the events that occur to models within them, allowing you to listen in one place for any change that might happen to any model in the collection.
However, it's fairly common to encounter APIs that return data in a different format than what Backbone expects.
If you're strict about not allowing views to reach outside of themselves, it helps keep your interface flexible — allowing views to be rendered in isolation in any place where they might be needed. Backbone remains unopinionated about the process used to render View objects and their subviews into UI: you define how your models get translated into HTML or SVG, or Canvas, or something even more exotic.
Some basic approaches to rendering views can be found in the Backbone primer. Routing with URLs In rich web applications, we still want to provide linkable, bookmarkable, and shareable URLs to meaningful locations within an app.
Use the Router to update the browser URL whenever the user reaches a new "place" in your app that they might want to bookmark or share. Conversely, the Router detects changes to the URL — say, pressing the "Back" button — and can tell your application exactly where you are now.
Events Events is a module that can be mixed in to any object, giving the object the ability to bind and trigger custom named events. Events do not have to be declared before they are bound, and may take passed arguments. Events ; object.
Events onobject. The callback will be invoked whenever the event is fired. If you have a large number of different events on a page, the convention is to use colons to namespace them: "poll:start", or "change:selection". The event string may also be a space-delimited list of several events For example, to proxy all events from one object to another: proxy.
If no context is specified, all of the versions of the callback with different contexts will be removed. If no callback is specified, all callbacks for the event will be removed. If no event is specified, callbacks for all events will be removed. Subsequent arguments to trigger will be passed along to the event callbacks. Handy for saying "the next time that X happens, do this".
When multiple events are passed in using the space separated syntax, the event will fire once for every event you passed in, not once for a combination of all events listenToobject.
The advantage of using this form, instead of other.
The callback will always be called with object as context. Either call stopListening with no arguments to have the object remove all of its registered callbacks Catalog of Events Here's the complete list of built-in Backbone events, with arguments. You're also free to trigger your own events on Models, Collections and Views as you see fit. The Backbone object itself mixes in Events, and can be used to emit any global events that your application needs.
Generally speaking, when calling a function that emits an event model. Note that this is rarely, perhaps even never, a good idea. Passing through a specific flag in the options for your event callback to look at, and choose to ignore, will usually work out better.
The following is a contrived example, but it demonstrates defining a model with a custom method, setting an attribute, and firing an event keyed to changes in that specific attribute. After running this code once, sidebar will be available in your browser's console, so you can play around with it.
Model and provide instance properties, as well as optional classProperties to be attached directly to the constructor function. If you define a preinitialize method, it will be invoked when the Model is first created, before any instantiation logic is run for the Model. If you define an initialize function, it will be invoked when the model is created. The model.
Note that the reverse is not true, as passing this option to the constructor will not automatically add the model to the collection. Useful, sometimes.
For example: note. If any of the attributes change the model's state, a "change" event will be triggered on the model.
Change events for specific attributes are also triggered, and you can bind to those as well, for example: change:title, and change:content. You may also pass individual keys and values. Fires a "change" event unless silent is passed as an option. If you set the id in the attributes hash, it will be copied onto the model as a direct property.
Models can be retrieved by id from collections, and the id is used to generate model URLs by default. If you're directly communicating with a backend CouchDB, MongoDB that uses a different unique key, you may set a Model's idAttribute to transparently map from that key to id.
Client ids are handy when the model has not yet been saved to the server, and does not yet have its eventual true id, but already needs to be visible in the UI.