Angular 7 Interview Questions | Eklavya Online

Angular 7 Interview Questions

What is Angular 7? How is it different from AngularJS?

Angular7 is the latest and recent version of Angular. AngularJS was the first version of Angular which is also known as Angular 1.0. Angular7 is the complete rewrite of the Angular1.0. It supports two-way data binding, and some other features like ng update, ng add, Angular Elements, Angular Material + CDK Components, Angular Material Starter …

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What is Angular framework?

Angular is a TypeScript-based open-source web framework and a platform. It is used to build web/ mobile and desktop applications. Main features of this framework are: Declarative templates, dependency injection, end to end tooling etc. These features make web development easy in Angular.

What is the difference between structural directive and attribute directive in Angular 7?

Structural directives are used to alter the DOM layout by removing and adding DOM elements. These directives are far better in changing the structure of the view. Examples of Structural directives are NgFor and Nglf. Attribute Directives are used as characteristics of elements. For example, a directive such as built-in NgStyle in the template Syntax …

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What is the difference among “declarations”, “providers” and “import” in NgModule?

Difference among declarations”, “providers” and “import” in NgModule: declarations are used to make directives (including components and pipes) from the current module available to other directives in the current module. Selectors of directives, components or pipes are only matched against the HTML if they are declared or imported. providers are used to make services and …

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What are the key components of Angular?

Key components of Angular: Components: Components are the basic building blocks of angular application and used to control HTML views. Modules: Modules are the set of angular basic building blocks like component, directives, services etc. An application is divided into logical pieces and each piece of code is called as “module” and used to perform …

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Explain the Architecture overview of Angular.

Angular is the most popular web development framework for developing mobile and web applications. It uses cross platform mobile development called IONIC that’s why it is not limited to web apps only. There are 7 main building blocks of an Angular application: Component Templates Metadata Data Binding Directives Services Dependency Injection The basic building blocks …

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What is the UrlSegment Interface in Angular 7?

In Angular 7, the UrlSegment interface represents a single URL segment, constructor, properties and methods like this: class UrlSegment { constructor(path: string, parameters: {…}) path: string parameters: {…} toString(): string } The UrlSegment is a part of a URL between the two slashes and it contains a path and matrix parameters associated with the segment.