Angularjs 2 Interview Coding Questions

2) What are the key features of AngularJS?

The key features of AngularJS are:

  • Scope
  • Controller
  • Model
  • View
  • Services
  • Data Binding
  • Directives
  • Filters
  • Testable
  • Dear readers, these Angular 2 Interview Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of Angular 2. As per my experience good interviewers hardly plan to ask any particular question during your interview, normally questions start with some basic concept of the subject and later they continue based on further discussion and what you answer: What is Angular 2?

    11) What does Cli stand for, and what does it do?

    It stands for Command Line Interface and is used to create an Angular application. Additionally, it helps to create an application’s unit and end-to-end test.

    This is a technique where, instead of an entire web page being loaded and given to the user in one shot, only the wanted section gets loaded in, with the rest of content delayed until needed, if at all.

    Enroll for the Angular Course and gain in-depth knowledge of concepts like TypeScript, Bootstrap Grid System, and more!

    The file is used to provide the options for Typescript that will be used for an Angular project.

    22) Explain the main difference between AngularJS and backbone.js

    AngularJS Backbone.js
    AngularJS is a JavaScript-based open-source framework which is designed to support dynamic web applications. backbone.js is a framework which abstracts DOM into views and data into models and then binds both using events.
    It’s performance is good as it provides two-way data binding process Backbone.js technology offers faster performance than AngularJS if the data sets are small
    It works on MVS (Multiple Virtual Storage). It works on MVP architecture.
    AngularJS uses dynamic HTML attribute to make an easy to understand the application. Backbone.js uses underscore templates to understand the application.
    It has large community support. Community support is restricted to the underscore template.

    AngularJS was developed by Adam Abrons and Misko Hevery. Currently, it is developed by Google.

    14) Explain the linking function and its types

    Link combines the directives with a scope and produces a live view. For registering DOM listeners as well as for updating the DOM, link function is responsible. After the template is cloned, it is executed.

  • Pre-linking function: Pre-linking function is executed before the child elements are linked. It is not considered as a safe way for DOM transformation.
  • Post linking function: Post linking function is executed after the child elements are linked. It is safe to do DOM transformation by post-linking function
  • An injector is a service locator. It is used to retrieve object instances as defined by provider, instantiate types, invoke methods, and load modules. There is a single injector per Angular application, it helps to lookup an object instance by its name.

    2 What is String Interpolation in Angular?

    String Interpolation is a one-way data-binding technique that outputs the data from TypeScript code to HTML view. It is denoted using double curly braces. This template expression helps display the data from the component to the view.Â

    Template statements are properties or methods used in HTML for responding to user events. With these template statements, the application that you create or are working on, can have the capability to engage users through actions such as submitting forms and displaying dynamic content.

    The template here is deleteHero. The method is called when the user clicks on the button.

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