Top Most Asked AngularJS Interview Questions

Web Design | Design, Technology | Oct 29,2022 | By Swapna

AngularJS is a popular JavaScript framework for web development. If you're looking for a job in web development, you should expect to be asked AngularJS interview questions. In this article, we'll discuss some of the top AngularJS interview questions that you might be asked. We'll also provide some tips on how to answer these questions. Read on to learn more!

AngularJS is an open source framework for building web apps in HTML, CSS and JavaScript. It offers a lot of utility and makes it easy to design the applications in an efficient and easy to understand way. The framework is developed by Google and the community and has become one of the most popular frameworks for developing single page applications.

1.What are angular Date and Time?

the Date and Time in AngularJS is a very useful and powerful feature that allows you to easily create date and time filters and formatting. AngularJS date filter allows you to filter data according to date filters. This filter can be applied to array values and filter the array according to the date. The date filter is useful to format dates, times and numbers. In this article, we will discuss the different attributes of the Date filter and the corresponding syntax to create a Date filter.

2.What are Components in Angular JS?

Components are the core building blocks of the Angular framework. They are a way to partition your application into reusable pieces. In Angular, a component is a directive with its own template, logic, and styles. When Angular components were first introduced, they were referred to as 'angular 2', and were a replacement for controllers. Angular components are a lighter version of presentational components, where they are created as an isolated unit (logic and view). In Angular, components are first-class citizens, so they can be used in any place where a directive can be used: in attribute directives, in structural directives, or in their own components.

3.When do you use interpolation?

Interpolation is a way that you can use to avoid hardcoding values in your HTML as well as to make your code more dynamic. In AngularJS, you will use interpolation to dynamically set values in your HTML with string, number or expressions. For example, you can use interpolation to dynamically set values in the ng-model, ng-repeat or ng-bind attributes.

4.How does Angular differ from Backbone, Ember and React?

Angular is a complete front-end web framework that offers a lot more than just data binding, routing and templating. Angular is the framework that helps you create complex applications in an easier way. It is actually a combination of the best practices of many frameworks. It has the building blocks of a lot of other frameworks including the features of AngularJS, MVC architecture, Web Components, Dependency injection and RxJS.

AngularJS is a JavaScript framework for building single-page web applications. It's designed to make both the development and the testing phases easier, and to allow for a separation of concerns. AngularJS is based on the concept of two-way data binding, a declarative way of writing applications without worrying about how the DOM is updated. The framework is fully extensible and works with other frameworks and libraries.

5.What is Data Binding in AngularJS?

AngularJS is a famous front-end JavaScript framework which is widely used for creating Single Page Applications (SPA). One of the major features of this framework is data binding feature. Data binding is one of the most important and powerful concepts of AngularJS. Data binding is used for two-way communication between model and view. It updates the model from the user's input and updates the view whenever the model changes.

Data binding is a process of updating the view whenever the model or the model value changes. AngularJS uses two-way data binding. The reason two-way data binding is used is that AngularJS is a MVVM framework. The view gets updated when the model changes and the model gets updated when the view changes.

6.What are the Events in AngularJS?

Events in AngularJS allow you to bind parts of your application to be called when certain actions take place. For example, if you want to display a message to your user when they first sign up on your site, you can create an event to handle the action. Events are registered in angular by calling the $rootScope. $broadcast method.

Events in AngularJS are a mechanism for broadcasting information throughout an application. AngularJS implements the publish/subscribe pattern to transmit and listen for information, which is modeled as an event. Events can be custom-built or directly related to DOM events. For example, you can create a custom click event, which is emitted from an element on the page. Custom events are useful for scenarios that aren’t covered by built-in events, such as triggering an event when the value of an expression changes. Built-in events are specific to HTML UI elements and include click, dblclick, mousedown, mouseout, mouseover, mouseup, and submit.


AngularJS is one of the most popular JavaScript frameworks and is used to build Single Page Applications. The main purpose of this framework is to address the challenges encountered in developing single page applications.

AngularJS is a JavaScript framework that makes it easy to build web applications. AngularJS makes use of HTML as well as CSS to present dynamic data and user interfaces. It contains various built-in directives which help in accomplishing the tasks related to data-binding, DOM manipulation, form validation, and routing.

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