{"id":5068,"date":"2023-04-19T11:18:25","date_gmt":"2023-04-19T11:18:25","guid":{"rendered":"https:\/\/unremot.com\/blog\/?p=5068"},"modified":"2023-04-19T11:18:25","modified_gmt":"2023-04-19T11:18:25","slug":"top-20-angular-version-interview-questions","status":"publish","type":"post","link":"https:\/\/unremot.com\/blog\/top-20-angular-version-interview-questions\/","title":{"rendered":"Top 20 Angular version interview questions"},"content":{"rendered":"

Here are Top 20 Angular version interview questions. Let’s get started!<\/p>\n\n

Angular 2 interview questions\u00a0<\/b><\/h2>\n

Angular2 interview questions and answers are useful to prepare well for an interview. Angular 2 interview questions can help demonstrate in-depth knowledge and experience with these advanced concepts can set a candidate apart from other Angular developers.<\/span><\/p>\n

1.How is Dependency Hierarchy formed?<\/strong><\/h3>\n

The dependency injection system of Angular is hierarchical. It consists of a tree of injectors that stands parallel to the application\u2019s component tree. The Dependency Hierarchy is formed with the configurations. The reconfiguration of the injectors can be done at any given level of the component tree. The providers for different injectors can also be configured in the injector hierarchy.<\/span><\/p>\n

2.What is the purpose of the async pipe?<\/strong><\/h3>\n

The purpose of the async pipe is basically to mark the components that need to be checked for changes. It subscribes to an Observable or Promise and returns the latest value it has emitted. Once this new value gets emitted, the components are marked by the async pipe. Now, whenever any component is destroyed, the async pipe detaches or unsubscribes automatically. Similarly, if the expression reference of the component changes, the async pipe detaches or unsubscribes from the old Observable or Promise and subscribes to a new one.<\/span><\/p>\n

Also read: <\/strong>5 Ways to Stand Out in Your Next Job Interview<\/a><\/p>\n

\u00a0<\/strong>Angular 6 interview questions<\/b><\/h2>\n

Angular quiz helps you test your knowledge in Angular Framework. Here are Angular 6 interview questions are<\/span><\/p>\n

1.Which is the following is correct about TypeScript?<\/strong><\/h3>\n
    \n
  1. Angular is based on TypeScript.<\/span><\/li>\n
  2. This is a superset of JavaScript.<\/span><\/li>\n
  3. TypeScript is maintained by Microsoft.<\/span><\/li>\n
  4. All of the above.<\/span><\/li>\n<\/ol>\n

    Answer Option d – All the above<\/span><\/p>\n

    2.What does AOT stand for?<\/strong><\/h3>\n
      \n
    1. Ahead-Of-Time Compilation<\/span><\/li>\n
    2. Angular Object Templates<\/span><\/li>\n
    3. Both<\/span><\/li>\n
    4. None of above<\/span><\/li>\n<\/ol>\n

      Answer \u2013 Option a- Ahead-of-Time compilation<\/span><\/p>\n

      \u00a0Angular 4 interview questions<\/strong><\/h2>\n

      Angular 4 multiple choice questions are typically asked to gauge the concepts of the candidate. Here are some typical Angular 4 interview questions that may be asked during interview.\u00a0<\/span><\/p>\n

      1.Router is part of which of the following module?<\/strong><\/h3>\n
        \n
      1. @angular\/core<\/span><\/li>\n
      2. @angular\/router<\/span><\/li>\n
      3. Both<\/span><\/li>\n
      4. None of the above<\/span><\/li>\n<\/ol>\n

        Answer \u2013 Option b-@angular\/router<\/span><\/p>\n

        2.Which angular decorator allows us to define the pipe name that is globally available for use in any template in the across application?<\/strong><\/h3>\n
          \n
        1. PipeName<\/span><\/li>\n
        2. PipeDeco<\/span><\/li>\n
        3. Pipe<\/span><\/li>\n
        4. None of the above<\/span><\/li>\n<\/ol>\n

          Answer \u2013 Option c \u2013 Pipe<\/span><\/p>\n

          Angular 7 interview questions<\/b><\/h2>\n

          Companies ask interview questions in Angular to find the best fit for their team. Angular 7 interview questions and answers for experienced will check their knowledge and ability to think outside-the-box.<\/span><\/p>\n

          1.What is parameterized pipe?<\/strong><\/h3>\n

          A pipe can accept any number of optional parameters to fine-tune its output. The parameterized pipe can be created by declaring the pipe name with a colon ( : ) and then the parameter value. If the pipe accepts multiple parameters, separate the values with colons. Let’s take a birthday example with a particular format(dd\/MM\/yyyy):<\/span><\/p>\n

          import { Component } from ‘@angular\/core’;<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0@Component({<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0selector: ‘app-birthday’,<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0template: `<p>Birthday is {{ birthday | date:’dd\/MM\/yyyy’}}<\/p>` \/\/ 18\/06\/1987<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0})<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0export class BirthdayComponent {<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0birthday = new Date(1987, 6, 18);<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0}<\/span><\/p>\n

          Note:<\/b>\u00a0The parameter value can be any valid template expression, such as a string literal or a component property.<\/span><\/p>\n

          2.How do you chain pipes?<\/strong><\/h3>\n

          You can chain pipes together in potentially useful combinations as per the needs. Let’s take a birthday property which uses date pipe(along with parameter) and uppercase pipes as below<\/span><\/p>\n

          import { Component } from ‘@angular\/core’;<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0@Component({<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0selector: ‘app-birthday’,<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0template: `<p>Birthday is {{\u00a0 birthday | date:’fullDate’ | uppercase}} <\/p>` \/\/ THURSDAY, JUNE 18, 1987<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0})<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0export class BirthdayComponent {<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0birthday = new Date(1987, 6, 18);<\/span><\/p>\n

          \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/span><\/p>\n

          Also read:\u00a0Top 15 Angular basic interview questions<\/a>\u00a0<\/strong><\/p>\n

          Angular 8 interview questions<\/b><\/h2>\n

          Top Angular interview questions form an excellent resource to prepare for an interview, your Angular concepts for interview should be clear.\u00a0<\/span><\/p>\n

          1.What is interpolation?<\/strong><\/h3>\n

          Interpolation is a special syntax that Angular converts into property binding. It\u2019s a convenient alternative to property binding. It is represented by double curly braces({{}}). The text between the braces is often the name of a component property. Angular replaces that name with the string value of the corresponding component property.<\/span><\/p>\n

          Let’s take an example,<\/span><\/p>\n

          <h3><\/span><\/p>\n

          \u00a0\u00a0{{title}}<\/span><\/p>\n

          \u00a0\u00a0<\/span><img<\/span> src<\/span>=”<\/span>{{url}}<\/span>” <\/span>style<\/span>=”<\/span>height:30px<\/span>“<\/span>><\/span><\/p>\n

          <\/h3><\/span><\/p>\n

          In the example above, Angular evaluates the title and url properties and fills in the blanks, first displaying a bold application title and then a URL.<\/span><\/p>\n

          2.What are template statements?<\/strong><\/h3>\n

          A template statement responds to an event raised by a binding target such as an element, component, or directive. The template statements appear in quotes to the right of the = symbol like\u00a0<\/span>(event)=”statement”<\/span>.<\/span><\/p>\n

          Let’s take an example of button click event’s statement<\/span><\/p>\n

          <button (click)=”editProfile()”>Edit Profile<\/button><\/span><\/p>\n

          In the above expression, editProfile is a template statement. The below JavaScript syntax expressions are not allowed.<\/span><\/p>\n