27 interview questions on Angular for developers (2025)

Easy

28 votes3306 runs2 comments

Create a form with two mandatory fields in Angular

Web developer

angular

form

validation

Anonymous authorat Jan 4, 2022

Medium

15 votes3271 runs

3 comments

Which provider is recommended for DOM manipulation in Angular?

Web developer

angular

dom

Anonymous authorat Jan 4, 2022

Medium

14 votes3232 runs

3 comments

Which of these methods, allowing to create Providers, does not exist in Angular?

Web developer

angular

providers

Anonymous authorat Mar 28, 2023

Medium

8 votes3114 runs

3 comments

Write a pipe to format a date according to a certain pattern.

Web developer

angular

pipe

Anonymous authorat Jan 4, 2022

Easy

6 votes3211 runs1 comment

How to make a child component communicate with its parent component in Angular?

Web developer

angular

child component

parent component

Anonymous authorat Jan 4, 2022

Easy

5 votes2943 runs0 comment

Unsubscribe from an Observable in Angular

Web developer

angular

observables

subscriptions

Anonymous authorat Jan 4, 2022

Medium

5 votes2939 runs1 comment

In an Angular directive, which decorator should we use to listen for an event of the element that this same directive is placed on?

Web developer

directives

events

Anonymous authorat Jan 4, 2022

Medium

5 votes2866 runs

1 comment

Which token should we use to execute JavaScript code when starting the application

Web developer

angular

app

Anonymous authorat Jan 4, 2022

Easy

5 votes2861 runs1 comment

Why is the following snippet not validated? ```jsx <h1>Products Lists</h1> <ul> <li ngFor="let p of products" ngIf="p.stock > 0"> {{ p.name }} </li> </ul> ``` Answer: We cannot have ngFor and ngIf on the same element

Web developer

angular

ngFor

ngIf

Anonymous authorat Jan 4, 2022

Medium

5 votes1123 runs0 comment

How many service instances will be created if you provide a service in the "providers" section of two @Component decorator components?

Web developer

angular

services

Nicolasat Apr 13, 2022

Easy

4 votes2999 runs2 comments

Get a path parameter from the current url in Angular

Web developer

angular

route

Anonymous authorat Jan 4, 2022

Easy

3 votes2879 runs1 comment

How to retrieve an event in Angular

Web developer

events

angular

Anonymous authorat Jan 2, 2024

Hard

3 votes2869 runs1 comment

What is the main purpose of the* providedIn: 'root'* property which is automatically put on each generated service?

Web developer

angular

tree shaking

Anonymous authorat Jan 4, 2022

Easy

2 votes2743 runs1 comment

What type of Guard does not exist in Angular?

Web developer

guards

Anonymous authorat Jan 4, 2022

Medium

2 votes1001 runs0 comment

Define an interface that acts as a bridge between Angular's Forms API and a native element in the DOM.

Web developer

angular

forms

Marc Gavanierat Jan 4, 2022

Medium

1 vote2888 runs1 comment

Which of these syntaxes cannot be used in Angular?

Web developer

angular

attribute

Anonymous authorat Jan 4, 2022

Medium

1 vote2863 runs2 comments

Which of these component lifecycle methods does not exist? (ngAfterDestroy)

Web developer

lifecycle

methods

Anonymous authorat Jan 4, 2022

Easy

1 vote2817 runs1 comment

Create a new component in an Angular module and make it available in the whole application.

Web developer

angular

module

component

Anonymous authorat Jan 4, 2022

Easy

1 vote602 runs0 comment

What is the main advantage of using the MVC (Model-View-Controller) approach in web application development?

Web developer

tonyat May 6, 2024

Medium

1 vote523 runs

1 comment

How to bypass interceptors when making a HTTP request in Angular?

Web developer

angular

http

Chloéat Nov 20, 2023

27 interview questions on Angularfor developers (2025)

Test your technical skills before an interview of Angular with 27 corrected questions. Beginner, Intermediate or Expert level.

Create a form with two mandatory fields in Angular

Which provider is recommended for DOM manipulation in Angular?

Which of these methods, allowing to create Providers, does not exist in Angular?

Write a pipe to format a date according to a certain pattern.

How to make a child component communicate with its parent component in Angular?

Unsubscribe from an Observable in Angular

In an Angular directive, which decorator should we use to listen for an event of the element that this same directive is placed on?

Which token should we use to execute JavaScript code when starting the application

Why is the following snippet not validated? ```jsx <h1>Products Lists</h1> <ul> <li ngFor="let p of products" ngIf="p.stock > 0"> {{ p.name }} </li> </ul> ``` Answer: We cannot have ngFor and ngIf on the same element

How many service instances will be created if you provide a service in the "providers" section of two @Component decorator components?

Get a path parameter from the current url in Angular

How to retrieve an event in Angular

What is the main purpose of the* providedIn: 'root'* property which is automatically put on each generated service?

What type of Guard does not exist in Angular?

Define an interface that acts as a bridge between Angular's Forms API and a native element in the DOM.

Which of these syntaxes cannot be used in Angular?

Which of these component lifecycle methods does not exist? (ngAfterDestroy)

Create a new component in an Angular module and make it available in the whole application.

What is the main advantage of using the MVC (Model-View-Controller) approach in web application development?

How to bypass interceptors when making a HTTP request in Angular?

27 interview questions on Angularfor developers (2025)

Test your technical skills before an interview of Angular with 27 corrected questions. Beginner, Intermediate or Expert level.

Create a form with two mandatory fields in Angular

Which provider is recommended for DOM manipulation in Angular?

Which of these methods, allowing to create Providers, does not exist in Angular?

Write a pipe to format a date according to a certain pattern.

How to make a child component communicate with its parent component in Angular?

Unsubscribe from an Observable in Angular

In an Angular directive, which decorator should we use to listen for an event of the element that this same directive is placed on?

Which token should we use to execute JavaScript code when starting the application

Why is the following snippet not validated? ```jsx <h1>Products Lists</h1> <ul> <li *ngFor="let p of products" *ngIf="p.stock > 0"> {{ p.name }} </li> </ul> ``` Answer: We cannot have ngFor and ngIf on the same element

How many service instances will be created if you provide a service in the "providers" section of two @Component decorator components?

Get a path parameter from the current url in Angular

How to retrieve an event in Angular

What is the main purpose of the* providedIn: 'root'* property which is automatically put on each generated service?

What type of Guard does not exist in Angular?

Define an interface that acts as a bridge between Angular's Forms API and a native element in the DOM.

Which of these syntaxes cannot be used in Angular?

Which of these component lifecycle methods does not exist? (ngAfterDestroy)

Create a new component in an Angular module and make it available in the whole application.

What is the main advantage of using the MVC (Model-View-Controller) approach in web application development?

How to bypass interceptors when making a HTTP request in Angular?

Why is the following snippet not validated? ```jsx <h1>Products Lists</h1> <ul> <li ngFor="let p of products" ngIf="p.stock > 0"> {{ p.name }} </li> </ul> ``` Answer: We cannot have ngFor and ngIf on the same element