Interview Questions

1. What decorator we used in the linking an internal property to an input property on host element.

Options:

a. @ElementRef

b. @HostListener

c. @HostBinding

d. @Renderer

Reveal Answer

2. NgIf and NgFor are the_______________________ .

Options:

a. Components directive

b. Structural directive

c. Attribute directive

Reveal Answer

3. ngClass is used to add and remove CSS classes on an HTML element.

Options:

a. Yes

b. No

Reveal Answer

4. what decorator we used in the Call back event handler methods to listen the events that are raised on the host element.

Options:

a. @ElementRef

b. @HostListener

c. @HostBinding

d. @Renderer

Reveal Answer

5. ngStyle is the__________________________.

Options:

a. Components directive

b. Structural directive

c. Attribute directive

d. None of the above

Reveal Answer

6. You can’t define ____________in directive.

Options:

a. attribute

b. pipe

c. expression

d. none of the above

Reveal Answer

7. ngClass is added into our component element and its value is given as ?

Options:

a. Object

b. reference

c. class

d. value

Reveal Answer

8. NgFor and NgIf are ___________________

Options:

a. Structural Directives

b. Components

c. Attribute directives

Reveal Answer

9. import { Component } from '@angular/core' @Component({ selector: 'data-binding', templateUrl: './directives.html' }) export class AppComponent { hide = false; myname = "Surya"; } (in directives.html) <p *ngIf="hide ;else template1">{{myname}}</p> <ng-template #template1> Hello {{myname}} </ng-template> Output will be?

Options:

a. Surya

b. Hello Surya

c. Hello

d. error

Reveal Answer

10. HostListener syntax

Options:

a. $HostLisener("event")methodname( ) { //your code }

b. @HostListener("event") methodname( ) { //your code }

Reveal Answer

Interview Questions and Answer

1. What decorator we used in the linking an internal property to an input property on host element.

2. NgIf and NgFor are the_______________________ .

3. ngClass is used to add and remove CSS classes on an HTML element.

4. what decorator we used in the Call back event handler methods to listen the events that are raised on the host element.

5. ngStyle is the__________________________.

6. You can’t define ____________in directive.

7. ngClass is added into our component element and its value is given as ?

8. NgFor and NgIf are ___________________

10. HostListener syntax

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