What is Ember.js? Why Is It So Popular Javascript Framework?

Ember js

There are so many JavaScript libraries, designed to DOM manipulation,however, when it comes to one-page application development many proper frameworks are not suitable for this. But Today we are taking about Ember.js framework.

Such libraries like jQuery cannot be used to build complex one-page applications. To say it simply they are designed for other purposes and can manage status of the interfaces and routes only with special plugins. In my opinion it’s not the best solution. In order to solve the problem, you need to use the appropriate tools for this.

Ember.js – this is just what you need if we talk about complex one-page application. With Ember.Js you can make your life easier when creating complex applications, as it’s based on MVC principle work.


The first this you need to understand is that Ember.js – is a framework for creation of non-traditional sites. Such frameworks like jQuery and the Mootools more suited to the classical sites. Applications created on the basis of Ember.js more similar to desktop applications.

Ember js

As I mentioned earlier Ember.js uses MVC as a code distribution system. If you don’t know anything about MVC, then you need to read the simple article that describes work under this scheme. If you have everused Backbone.js, then it will not be difficult to understand Ember.js.

Ember.js frequently uses templates, which works on the basis of Handlebars library. With its help we can write templates for generating dynamic HTML code. We will transfer data into template using Ember.js means. Here is an example of the template display unordered users list:

#each keyword means a common cycle, which will be scrolled entries from the Variable people. With the Expressions such as {{name}}, we will extract the necessary information.

Handlebars – it’s really good template that can be used separately from Ember.js. On the official website you can find additional information about Handlebars.


Before you proceed to write any code using Ember.js it is better to start with its features.


As I have said previously, when you start to work with Ember you have to use templates very often. Here is an example of template connection:

Router helps to respond on applications conditions changes and connect necessary resources, depending on page navigation. Possible operations: data extraction from model, transfer to controllers, views and templates.

All this we write directly in HTML document. After the page runs, Ember launch its mechanisms and all of the templates are filled with information. In this example we display values of two Variables: {{firstName}} and {{lastName}}.


Routing is done by creating routes for specific parts of your application. Routes define the sections of your application, as well as the url, associated with them. URL is a key object to determine what state of application you want to display to the user.

Route behavior (data transferring from the model) is determined using a global Ember object, connected with app navigation. Here is an example of data extraction from model:

Once the user clicks on the address “/employees” router will make reference to the model and pull the list of employees.


Models are designed to receive and return object data views, which are used in our application. It can be just an array or JSON response from a third-party PHP file. Ember Data Library provides good API for mapping and data updates.


Controllers are designed for objects storage and models interaction. They act as intermediaries, referring to the model and transmitting data to the view and templates. Templates should always being connected to the controller.

You need to understand that controller is designed for data dissemination received from model.

You can keep other data in controllers which is needed for application, but it shouldn’t sent back to server for storage.


As a part of Ember.js views are designed to keep track of events perpetrated by user and transforming them into what you want to application response. If user clicked on the button to delete contact, view will track event and informs applicationregarding its state.


Ember.js works on the principle of “agreement instead of settings.” Ember does not require any additional code writing, as Ember can guess many things, such as automatic detection of path name and controller while determining resource. It even knows how to automatically create a controller for the resource, if you don’t define it.

It includes a good handler paths and optional layer for data called ember data. Ember has a module for working with data which is integrated within the backend Ruby-on-Rails, or any API with a RESTful JSON.

In the development of Ember.js speed was the main focus. Your application is likely to be loaded and run faster.

What is Ember.js? Why Is It So Popular Javascript Framework? was last modified: March 25th, 2016 by Artem Kuprin
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Artem Kuprin

This article is provided by AngularTeam – outsource web application developers with more than 11 years of experience in software development.

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