Ember.js Interview Questions – Set 03

What do you know by observers in Ember.js?

Ember supports observing any property which also includes computed properties. Observers are something which contains the behavior that reacts to the changes made in other properties. Observers are used when we need to perform some behavior after binding has finished synchronizing. New ember developers often use observers. Observers are mostly used within the ember framework and for that; computed properties are the appropriate solution. An observer can be set on an object using the following syntax- “ember.observer” Observers in ember are synchronous. They fire as soon as they observe a change in the properties. So, because of this, it is easy to introduce bugs where properties are not yet synchronized.

What do you know about Ember.js structure?

Ember.js follows Models, Views and Controller structure. It is abbreviated as MVC.

Model: Model is used to define the data which is present and is useful for the developer.

View: View is used to display the data and also capture the action of the users to use when needed.

Controller: Controller is used to modifying a query. It also modifies the data and offers user interactions in the most reliable manner.

What is the use of a template in Ember.js?

In Ember.js, a template is used to create a layout for one or more page. When we change a template, the pages based on that template changes automatically.

What are the main advantages of using Ember.js?

  • It is an open source framework. So, it gives developers unlimited access for customizing for desired output.
  • Ember.js doesn’t require server requests to perform its task.
  • DOM is directly updated when a user comes in contact with the browser or press any button over there.

How to define a view in Ember.js?

Ember.View.create({
templateName: ‘NameOfTemplate’,
});