Angular 6 interview questions

Angular 6 interview questions

Web Developer and so on by looking into Angular 6 job interview question and answers given and attend the interview successfully.

Angular 6 interview questions














Question 1. What Are Components In Angular?
Answer : Components are the most basic building block of a UI in Angular applications and it controls views (HTML/CSS). They also communicate with other components and services to bring functionality to your applications. Technically components are basically TypeScript classes that interact with the HTML files of the components, which get displayed on the browsers.


Question 2. What Types Of Ngmodules?
Answer : There are four types of NgModules –

  1. Features Module
  2. Routing Module
  3. Service Module
  4. Widget Module
  5. Shared Module


Question 3. What Is A Cookie?
Answer : A cookie is a small piece of data sent from a website and stored on the user's machine by the user's web browsers while the user is browsing.

Question 4. Why You Use Browsermodule, Commonmodule, Formsmodule, Routermodule, And Httpclientmodule?
Answer : 
   BrowserModule : The browser module is imported from @angular/platform-browser and it is used when you want to run your application in a browser.
CommonModuleThe common module is imported from @angular/common and it is used when you want to use directives - NgIf, NgFor and so on.
FormsModuleThe forms module is imported from @angular/forms and it is used when you build template driven forms.
RouterModuleThe router module is imported from @angular/router and is used for routing RouterLink, forRoot, and forChild.
HttpClientModuleThe HttpClientModule is imported from @angular/common/http and it used to initiate HTTP request and responses in angular apps. The HttpClient is more modern and easy to use the alternative of HTTP.


Question 5. What Is Impure Pipe?
Answer : Angular executes an impure pipe during every component change detection cycle. An impure pipe is called often, as often as every keystroke or mouse-move.
If you want to make a pipe impure that time you will allow the setting pure flag to false.

@Pipe({
  name: 'currency',
  pure:false

})



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