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Shenll Technology Angular Interview Questions

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Shenll Technology – Angular Interview Questions

Here is the list of Angular Interview Questions which are recently asked in Shenll Technology Accenture company. These questions are included for both Freshers and Experienced professionals. Our Angular Training has Answered all the below Questions.


1. Differentiate between Angular and AngularJS

The most basic difference between the two open-source frameworks is that Angular is Typescript-based (superset of ES6) while AngularJS is based on JavaScript. This essentially implies that there will be differences in their components

2. What is Angular?

Angular is a development platform, built on TypeScript. As a platform, Angular includes: A component-based framework for building scalable web applications. It is a collection of well-integrated libraries that cover a wide variety of features, including routing, forms management, client-server communication, and more.

3. What are the advantages of using Angular?

  • Functionality out of the box.
  • TypeScript.
  • Consistency.
  • Productivity.
  • Maintainability.
  • Modular development structure.

4. What is Angular mainly used for?

Angular is an open-source front-end web framework and one of the most popular JavaScript frameworks that is mainly maintained by Google. It provides a platform for easy development of web-based applications and empowers the front end developers in curating cross-platform applications.

5. What are Angular expressions?

Expressions in AngularJS are used to bind application data to HTML. The expressions are resolved by Angular and the result is returned back to where the expression is written. The expressions in AngularJS are written in double braces: {{ expression }}. They behave similar to ng-bind directives: ng-bind=”expression”

6. What is display:block and display:none?

The ngShow directive shows or hides the given HTML element based on the expression provided to the ngShow attribute. The element is shown or hidden by removing or adding the .ng-hide CSS class onto the element.

7. How many types of ngModule?

There are two types of modules, root modules and feature modules. In the same way that in a module we have one root component and many possible secondary components, in an application we only have one root module and zero or many feature modules.

8. What is web sockets?

WebSocket is a technology that allows two-way communication over single TCP socket. It is designed to be used between client's browser and application server.

9. What is async pipe?

Async is an Angular pipe used to automatically subscribe and unsubscribe from an observable or promise in templates. When the associated component is destroyed, it automatically unsubscribes from observables to reduce memory leaks.

10. Explain the procss about angular project bootstrap?

The process of loading the index. html page, app-level module, and app-level component is called bootstrapping, or loading the app.

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11. What are templates in Angular?

Templates in AngularJS are HTML file filled or enriched with AngularJS stuff like attributes and directives. A directive is a marker element that is used to target a particular attribute or class to render its behavior as according to the needs.

12. In Angular what is string interpolation?

String Interpolation in Angular 8 is a one-way data-binding technique that is used to transfer the data from a TypeScript code to an HTML template. It uses the template expression to display the data from the component to the view.

13. What is the difference between an Annotation and a Decorator in Angular?

Annotations are only metadata set on the class using the Reflect Metadata library to create attribute annotations that stores array. Decorator corresponds to a function that is called on the class that gets the object that needs to be decorated.

14. What do you understand by controllers in Angular?

The controller in AngularJS is a JavaScript function that maintains the application data and behavior using $scope object in which the properties and methods are attached inside a controller function, which in turn will add/update the data and attach behaviors to HTML elements.

15. What is scope in Angular?

The $scope service in Angular detects changes to the model section and modifies HTML expressions in the view via a controller. Likewise, any alterations to the view are reflected in the model.

16. Diff between functional hoisting and variable hoisting

Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope before code execution and moved to the top of their scope regardless of whether their scope is global or local.

17. ________ keyword is used to access class's member variables and functions inside class member function

Functions of a class are also known as member functions of a class Functions defined inside of a class are called member functions (or sometimes methods).

18. We must import _______ module to use [ (ngModel)]

To use NgModel we need to import FormsModule and add it to imports attribute of @NgModule in our module file.

19. Write a syntax to bind custom CSS class (e.g. highlighted) to a tag

To add and remove CSS class names from the HTML element class attribute ,useCSS class binding which is same as property binding. But we need to add a prefix class with CSS class name in class binding.

20. Write syntax for component, directives and pipe decorator?

To create a component using the Angular CLI:
  • From a terminal window, navigate to the directory containing the application.
  • Run the ng generate component <component-name>command, where <component-name> is the name of the new component.
To create a custom pipe:
  • Import Pipe and Pipe Transform from Angular/core.
  • In the @Pipe directive, give the name to our pipe, that is used in our .html file.
To create a directive, use the CLI command ng generate directive:
  • Import ElementRef from @angular/core .
  • Add ElementRef in the directive's constructor() to inject a reference to the host DOM element, the element to which you apply appHighlight .
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TOP MNC's ANGULAR INTERVIEW QUESTIONS & ANSWERS

Here we listed all Angular Interview Questions and Answers which are asked in Top MNCs. Periodically we update this page with recently asked Questions, please do visit our page often and be updated in Angular .

Accenture
Cognizant
Virtusa
Shenll Technology
Hexaware
Wipro
IBM
Aspire Systems
FIS
Infosys
Capgemini
L & T
Amazon
Mindtree
HCL

To become a Angular Certified professional and join in your dream company, Enroll now for our Best Angular Training. We help you to crack any level of Angular Interviews and We offering Angular Training with 100% Placements.

other top mnc Angular Interview Q&A

  • Accenture
  • wipro
  • capgemini
  • Cognizant
  • IBM
  • L&T
  • Virtusa
  • Aspire Systems
  • Amazon
  • Shenll Technology
  • FIS
  • MindTree
  • Hexaware
  • Infosys
  • HCL

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