Ember. js. In this article we are going to compare three popular MV* frameworks for the web: Angular. JS vs. Choosing the right framework for your project can have a huge impact on your ability to deliver on time, and your ability to maintain your code in the future. You probably want a solid, stable and proven framework to build upon, but don't want to be limited by your choice. The web is evolving fast — new technologies arise, and old methodologies quickly become irrelevant. Under this light, we are going to go through an in- depth comparison of the three frameworks.##2 Meet The Frameworks. All the frameworks we are going to meet today have a lot in common: they are open- sourced, released under the permissive MIT license, and try to solve the problem of creating Single Page Web Applications using the MV* design pattern. They all have the concept of views, events, data models and routing. The Backbone.js SPA template is designed to get you started quickly building interactive client-side web apps using Backbone.js. The template provides an initial skeleton for developing a Backbone.js application in ASP.NET MVC. This page has consolidated API reference documentation for the core modules in a single page for the sake of being 'cmd+f' friendly. For more in-depth guides, conventions, best practices, and how to use. We are going to start with some quick background and history, and then dive in to compare the three frameworks. Angular. JS was born in 2. Get. Angular. Shortly after, Misko Hevery, one of the engineers who founded Get. Angular, managed to recreate a web application that consisted of 1. Get. Angular. Reducing the size of the application to just about 1,0. Google to start sponsoring the project, turning it into the open- source Angular. JS we know today. Amongst Angular's unique and innovative features are two- way data bindings, dependency injection, easy- to- test code and extending the HTML dialect by using directives. Backbone. js is a lightweight MVC framework. Born in 2. 01. 0, it quickly grew popular as a lean alternative to heavy, full- featured MVC frameworks such as Ext. JS. This resulted in many services adopting it, including Pinterest, Flixster, Air. BNB and others. Ember's roots go way back to 2. Starting its life as the Sprout. Core MVC framework, originally developed by Sprout. It and later by Apple, it was forked in 2. Yehuda Katz, a core contributor to the popular j. Query and Ruby on Rails projects. Notable Ember users include Yahoo!, Groupon, and Zen. Desk.##3 Community. Backbone.js Is Friendly Backbone.js is neither difficult to learn nor difficult to use, and the time you will spend learning to use this serviceable framework will be well worth it, for you will learn how to use one of the. One of the challenges when building nontrivial Web applications is that JavaScript’s non-directive nature can initially lead to a lack of structure in your code, or in other words, a lack of. NIH GUIDELINES FOR RESEARCH. RECOMBINANT OR SYNTHETIC. Nucleic Acid MOLECULES (NIH GUIDELINES) April 2016. DEPARTMENT OF HEALTH AND HUMAN SERVICES. National Institutes of Health. Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor. Community is one of the most important factors to consider when choosing a framework. A large community means more questions answered, more third- party modules, more You. Tube tutorials. I have put together a table with the numbers, as of June 3. Angular is definitely the winner here, being the 3rd most- starred project on Git. Hub and having more questions on Stack. Overflow than Ember and Backbone combined, as you can see below: Metric. Angular. JSBackbone. Ember. js. Stars on Github. Third- Party Modules. Stack. Overflow Questions. You. Tube Results~9. Git. Hub Contributors. Chrome Extension Users. Open Issues. 92. 21. Closed Issues. 5,5. All those metrics, however, merely show the current state of each framework. It is also interesting to see which framework has a faster- growing popularity. Fortunately, using Google Trends we can get an answer for that too: ##4 Framework Size. Page load times are crucial for the success of your web site. Users do not exhibit much patience when it comes to the speed of browsing — so in many cases it is desired to do everything possible to make your application load as fast as possible. There are two factors to look at when considering the impact of the framework on the loading time of your application: framework size and the time it takes the framework to bootstrap. Javascript assets are usually served minified and gzipped, so we are going to compare the size of the minified- gzipped versions. However, merely looking at the framework is not enough. Backbone. js, despite being the smallest (only 6. Underscore. js (5kb) and j. Query (3. 2kb) or Zepto (9. Framework. Net Size. Size with required dependencies. Angular. JS 1. 2. Backbone. js 1. 1. Query + Underscore)2. Zepto + Underscore). Ember. js 1. 6. 1. Query + Handlebars)##5 Templating. Angular and Ember include a template engine. Backbone, on the other hand, leaves it up to you to use the template engine of your choice. The best way to get a feeling of the different templating engines is a code sample, so let's dive in. We will show an example of formatting a list of items as HTML.###5. Angular. JSAngular's Templating engine is simply HTML with binding expressions baked- in. Binding expressions are surrounded by double curly braces: < ul>. Since Underscore is a Backbone dependency and you already have it on your page, you can easily take advantage of its templating engine without adding any additional dependencies for your application. On the downside, the templating engine of Underscore is very basic and you usually have to throw javascript into the mix, as you can see in our example: < ul>. A new Handlebars variant, called HTMLBars is currently in the works. Handlebars does not understand DOM - all it does is a simple string transformation. HTMLBars will understand DOM, so the variable interpolation will be context aware. As HTMLBars is still not production- ready, we will show the Handlebars way of printing the framework list: < ul>. Two- way data binding saves a lot of boilerplate code. Consider the following j. Query code snippet: $('#greet- form input. Rather, you just declare the bindings in your HTML template: < input ng- model=! Javascript is a single- thread, event- loop based language, which implies that many operations (such as network communication) happen in an asynchronous manner. Asynchronous javascript code tends to grow quickly into a spaghetti of nested callbacks, better recognized as . As such, the core team is constantly growing, resulting in innovation and tools that improve developer productivity: Protractor, Batarang, ngmin and Zone. In addition, the team collaborates with the community on the design decisions. For example, all the design documents for Angular 2. Angular helps you categorize your application building blocks into several types: Controllers, Directives, Factories, Filters, Services and Views (templates). Those are organized in turn into modules, which can depend one upon the other. Each type of building block has a different role. Views do the UI, Controllers work out the logic behind the UI, Services take care of communication with the backend and hold together pieces of common and related functionality, while Directives make it easy to create reusable components and extending HTML by defining new elements, attributes and behaviors. The automatic Dirty Checking means that you don't have to access your model data with getters and setters . Transclusion, in particular, is a concept which confuses many developers and wrapping your head around all the concepts such as compiling function, pre/post linking functions, the different scope kinds (transclusion/isolate/child scope) and all the other configuration settings for directives takes some time to master. The scope hierarchy in Angular uses Prototypal Inheritance, which is a new concept to grasp for people coming from Object Oriented languages such as Java and C#. Failing to understand scope inheritance causes many cases of frustrated developers (examples: here, here and here). Angular Expressions are used extensively in the View layer of Angular. This expression language is very powerful, sometimes too powerful. It lets the developer use complicated logic and even perform assignment operations and calculations, all inside the view templates. Putting logic inside the templates makes it harder to test, as it becomes impossible to test it in isolation. I have seen developers spending hours scratching their head trying to figure out why an event binding didn't fire the callback function on the scope, only to find out they have used the camel. Case convention instead of the hyphen- separated one when spelling attribute names (example here). Finally, the Digest Cycle of angular, which takes care of the . It is easy to forget to call $digest() when running in non- Angular context (example). On the other hand, you have to be very careful not to cause slow watches or infinite digest loops (examples: here, here and here). In general, for pages with a lot of interactive elements, Angular becomes really slow. A good rule of thumb is not to have more than 2,0. The learning curve is very linear, and there are only a few simple concepts to grasp (Models/Collections, Views, Routes). It has great documentation, the code is simple and heavily documented, and there is even an annotated version of the code which explains how it works in detail. You can actually go over the entire source code of the framework and get familiar with it in less than an hour. Being so small and basic, Backbone can be a good foundation to build your own framework upon. Some examples of 3rd party frameworks based on Backbone are Aura, Backbone UI, Chaplin, Geppetto, Marionette, Layout. Manager, Thorax, Vertebrae. With Angular and Ember you usually have to live with the choices made by the authors of the frameworks, which may or may not suit your project needs and personal style. Angular 2. 0 promises to change it, by comprising small independent modules, so you will be able to pick and mix. We are yet to see if they will be able to deliver this.###7. Pain Points. Backbone does not provide structure. It rather provides some basic tools you can use to create structure, leaving it up to the developer to decide how to structure his application, and there are also many blanks to fill. Things such as memory management have to be carefully considered. The lack of view lifecycle management makes route/state changes prone to memory leaks unless you take care of cleaning up everything yourself. While it is true that many of the functions not provided by Backbone itself could be filled by third- party plugins, this also means that there are many choices to be made when creating an application, as many functions have several alternative plugins. For example, nested models can be provided by Backbone. Document. Model, Back. Bone. Nested. Types, Backbone.
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