Angular Interview Questions

  What are custom directives in Angular and how to create them ? What are the security features in angular ? What is storybook in Angular ? What are the design patterns in Angular ? What are interceptors in Angular ? How to create a custom decorator in Angular ? How to make multiple http calls in parallel in Angular ? What is a module in TypeScript, and how can you use it ? How to hit an API before the loading of the appComponent ? If there is a package(or say library) that is not available through NPM , then how would you use it in your angular application ? How to optimize Angular application using OnPush change detection strategy ? What are the types of forms available in Angular ? Explain with syntax. How to improve Angular app performance ? What is AuthGuard in Angular ? Explain switch map , mergemap , forkjoin, combineLatest, concatMap, exhaustMap . what would happen if any of the requests fails in switch map , merge map or forkjoin ? What is dependency injection ? How do you...

  What are the ways to share data between 2 components ? What is lazy loading in Angular ? What are custom directives in Angular and how to create them ? What is the difference between ng serve and npm start ? What is the difference between ng add and npm install ? Can we use jQuery in Angular 2/4/5 ? What is replay subject in angular ? What is the difference between adding styles and scripts in angular.json and adding styles and scripts in index.html ? What is the difference between cold observables and hot observables  ? What are the properties inside @ngModule decorator ? How to generate a component using cli command without creating its spec file ? What is RxJS ? What is the use of HttpClientModule ? Is it necessary to define a constructor in a component ? What are the security features in angular ? What is testbed in Jasmine ? What is the difference between Subject and Behaviour Subject ? What are the advantage of using observable instead of promise for http request ? Dif...

  What is a Single page application ? What is Angular and what are its key features ? What are the lifecycle hooks in an Angular component ? What is the difference between ng serve and npm start? What is the difference between ‘dependencies’ and ‘dev-dependencies’ properties in package.json ? What are the types of forms available in Angular ? Explain with syntax. How to implement routing in Angular ? What are the ways to share data between 2 components in Angular ? Source: Angular Interview Questions For Freshers For more questions and answers visit our website at   frontend interview questions

  What is Angular and what are its key features ? What is a Single page application ? What is a component in Angular ? What are the lifecycle hooks in an Angular component ? How to implement routing in Angular web components ? What is lazy loading in Angular ? What are the ways to share data between 2 components ? What are custom directives in Angular and how to create them ? What is the difference between ng serve and npm start ? What is the difference between ng add and npm install ? Can we use jQuery in Angular 2/4/5 ? How to call an API in Angular ? What is the difference between 'dependencies' and 'dev-dependencies' properties in package.json ? What is replay subject in angular ? What is the difference between adding styles and scripts in angular.json and adding styles and scripts in index.html ? What is the difference between cold observables and hot observables  ? What are the properties inside @ngModule decorator ? How to generate a component using cli command w...