50+ TOP Angular 5 Interview Questions and Answers [UPDATED]

  • Question: Explain Npm?

    Answer :

    NPM stands for node package manager. It is used for installing dependencies for javascript packages.

  • Question: How To Create A New Project In Angular Js Using Cli?

    Answer :

    After installing Angular CLI run ng new project-name command to create a new Angular project.

  • Question: List The Types Of Data Binding Supported By Angular 5?

    Answer :

    Angular 5 supports four types of Data Binding They are

    1. String Interpolation
    2. Property Binding
    3. Event Binding
    4. Two-way-binding
  • Question: What Are Decorators?

    Answer :

    Decorators are functions that adds metadata to class members and functions. It was proposed in ES2016 and implemented in Typescript.

  • Question: What Is Transpiling?

    Answer :

    Transpiling is a process of converting code from one language to another. In Angular, Traceur compiler is used for converting TypeScript to JavaScript so that browsers can understand.

  • Question: Explain Ngmodule?

    Answer :

    NgModule is a decorator function in Angular that takes a single metadata object whose properties describe the module.

  • Question: What Is Angular Cli? List The Command To Install Angular Cli?

    Answer :

    Angular CLI is Command Line Interface for Angular that runs Webpack.You can use npm install -g @angular/cli command to install angular CLI.

  • Question: Explain $event In Angular 5?

    Answer :

    In Angular 5 $event is a reserved keyword that represents the data emitted by an event (event data).

    It is commonly used as a parameter for event based methods.

  • Question: Explain Component Life Cycle In Angular?

    Answer :

    • In Angular component life cycle in Angular goes through following stages.
    • Create
    • Render
    • Create and render children
    • Check for bound data changes and re-render
    • Destroy
  • Question: What Is *ngfor Directive Used For?

    Answer :

    ngFor directive is used for Iterating over a list of items and for Generating a new DOM element for each one.

  • Question: How To Run Angular5 Application Locally During Development?

    Answer :

    ng serve command is used to run Angular5 application locally during development.To start development server on specific port ng serve -p aPortNumber command is used.

  • Question: Explain Webpack?

    Answer :

    Webpack is module bundler Bundler for Angular2 or above. It bundles, minified and transpiler an Angular application.

  • Question: How Do We Import A Module In Angular 5?

    Answer :

    Simply use below syntax to import a module in Angular 5.

    import { ModuleName } from ‘someWhere’;

  • Question: What Do Double Curly Brackets Are Used In Angular 5?

    Answer :

    double curly brackets are used form data interpolation in Angular 5.

  • Question: What An Angular 5 Component Made Of? How Do You Generate A New Component?

    Answer :

    Angular2 component is made of a Component decorator and a component definition of a class. ng generate component componentname command is used to generate a component in Angular2.

  • Angular 5 Questions and Answers for Interview

    Preparing for Angular 5 job interview and whether you’re experienced or fresher & don’t know what kind of questions will be asked in Angular 5 interview, then go through the above 50+ Top Angular 5 Interview Questions and Answers to crack your job interview.