Angular Interview Question Set 7

Categories: Angular

What are the biggest advantages of using Angular?

Following is the list of the biggest advantages of using the Angular framework:

Angular supports two-way data-binding.

  1. It follows MVC pattern architecture.
  2. It supports static templates and Angular template.
  3. It facilitates you to add a custom directive.
  4. It also supports RESTfull services.
  5. Validations are supported in Angular.



What do you understand by Angular expressions?

Angular expressions are code snippets that are used to bind application data to HTML. Angular resolves the expressions, and the result is returned to where the expression is written. Angular expressions are usually written in double braces: {{ expression }} similar to JavaScript.

Syntax:

{{ expression }}



What are templates in Angular?

In Angular, templates contain Angular-specific elements and attributes. These are written with HTML and combined with information coming from the model and controller, which are further rendered to provide the user's dynamic view.



What is the difference between an Annotation and a Decorator in Angular?

In Angular, annotations are the "only" metadata set of the class using the Reflect Metadata library. They are used to create an "annotation" array. On the other hand, decorators are the design patterns used for separating decoration or modification of a class without actually altering the original source code.



Why was Angular introduced as a client-side framework?

Before the introduction of Angular, web developers used VanillaJS and jQuery to develop dynamic websites. Later, when the websites became more complex with added features and functionality, it was hard for them to maintain the code. Along with this, there were no provisions of data handling facilities across the views by jQuery. The need for a client-side framework like Angular was obvious that can make life easier for the developers by handling separation of concerns and dividing code into smaller bits of information (components).



How does an Angular application work?

Every Angular app contains a file named angular.json. This file contains all the configurations of the app. While building the app, the builder looks at this file to find the application's entry point. See the structure of the angular.json file:

These two steps are performed in the following order inside the main.ts file:


import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';  

platformBrowserDynamic().bootstrapModule(AppModule)   



Why is Angular preferred over other frameworks? / What are some advantages of Angular over other frameworks?

Due to the following features, Angular is preferred over other frameworks:

Extraordinary Built-in Features: Angular provides several out of the box built-in features like routing, state management, RxJS library, Dependency Injection, HTTP services, etc. That's why the developers do not need to look for the above-stated features separately.

Declarative UI: Angular has declarative UI. It uses HTML to render the UI of an application as it is a declarative language. It is much easier to use than JavaScript.

Long-term Google Support: Angular is developed and maintained by Google. Google has a long term plan to stick with Angular and provide support.

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