Angular 8 Interview Questions | Eklavya Online

Angular 8 Interview Questions

What is AOT in Angular 8?

In Angular 8, AOT stands for Ahead-of-Time compiler. It pre-compiles the application components and their templates during the build process. There are several reasons why apps compiled with AOT launch faster: The application components that are compiled with AOT execute immediately, without client-side compilation.Here, templates are embedded as code within their components, so there is …

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What do you mean by Angular Universal?

Angular Universal is a technology that is used to render Angular applications on the server. This process is called SSR (server-side rendering). A simple Angular application is executed on the browser as all the Angular applications are single-page applications, so the rendering always occurs on the browser. This process of rendering single-page applications is called …

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What are the benefits of using Template-driven forms in Angular 8?

Following are the benefits of using Template-driven forms: You should use Template-driven forms if you want to add a simple form to your application because template-driven forms use two-way data binding to update the data model in the component. By using this, you can see the changes instantly as you make changes in the template …

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What is the use of reactive forms in Angular 8?

Reactive forms use a model-driven approach to handle form inputs where values constantly change over time. It uses an explicit and immutable approach to manage the state of a form at a specific time. Every time the changes occur to the form state, it returns a new state. The reactive forms are used mainly for …

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What is the main purpose of Angular 8 forms?

The main purpose of Angular 8 forms is to handle the user’s input. You can also use these Angular forms in your application to enable users to log in, update profiles, enter information, or perform many other data-entry tasks. There are two approaches to handle the user’s input through forms in Angular 8: Reactive forms …

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How can you create an app in Angular 8?

You can easily create an Angular 8 web app using Angular CLI. Type the following command to create the Angular 8 web app. Syntax: ng new angular_app_name Example: ng new myapp The above command will create an Angular 8 app with the name “myapp.” Then, the Angular CLI will automatically install the required NPM modules. …

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What is the Purpose of Event Binding in Angular 8?

Event binding is a technique in Angular 8 used to handle the events raised from the DOM like button click, mouse move etc. When the DOM event happens (eg. click, change, keyup, keydown), it calls the specified method in the component. See an example of event binding. In this example, the playMusic() method from the …

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What is String Interpolation in Angular 8, and why is it used?

String Interpolation is a one-way data-binding technique in Angular 8. It is used to extract the output data from a TypeScript code to the HTML template view layer. It shows the data from the component to view layer in the form of curly braces. This interpolation technique adds the value of property to the component. …

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What is the usage of Angular 8 ngIf Directive?

The Angular 8 ngIf directive is a structural directive that is used to add or remove HTML elements according to the expression. The expression must return a Boolean value true or false. You can see the functioning of nglf directive clearly. If the expression is false, then the element is removed. Otherwise, the element is …

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