10+ Senior Angular Developer Interview Questions and Answers

Sort and remove duplicates from an array of strings in JavaScript.

• Use the Array.prototype.sort() method to sort the array.

• Use the Set object to remove duplicates from the sorted array.

• Convert the Set back to an array using the spread operator.

I have worked on Angular versions 2, 4, 6, 8, 10, and 12.

• Worked on Angular 2, which introduced components, modules, services, and directives.

• Experience with Angular 4, which focused on making the framework faster and smaller.

• Familiar with Angular 6, which introduced Angular Elements and Angular CLI v6.

• Proficient in Angular 8, which brought improvements in Ivy rendering engine and differential loading.

• Hands-on experience with Angular 10, which introduced stricter types and imp...read more

Angular offers advantages such as two-way data binding, dependency injection, and modular architecture.

• Two-way data binding allows automatic synchronization of data between the model and the view

• Dependency injection helps manage components and their dependencies easily

• Modular architecture promotes code reusability and maintainability

• Angular provides a rich ecosystem of tools and libraries for development

• Angular CLI simplifies project setup and maintenance

Deep copy creates a new copy of an object with all nested objects also copied, while shallow copy creates a new object with references to the original nested objects.

• Deep copy duplicates all levels of nested objects, while shallow copy only duplicates the top level object.

• Deep copy creates a completely new object with its own memory space, while shallow copy creates a new object that references the same memory locations as the original object.

• Deep copy is more memory intensiv...read more

Angular Architecture is a structural design of Angular applications that includes components, modules, services, and routing.

• Angular applications are built using components, which are reusable building blocks with their own logic and templates.

• Modules help organize the application into cohesive blocks of functionality.

• Services are used for sharing data and functionality across components.

• Routing allows navigation between different components based on the URL.

• Angular follows a...read more

Session Storage is a web storage API that allows data to be stored and accessed during a single session.

• Session Storage is a type of web storage that stores data for a single session only.

• Data stored in Session Storage is accessible only within the same tab or window.

• Session Storage data is cleared when the tab or window is closed.

• Session Storage is useful for storing temporary data that needs to be available during a user's visit to a website.

There are two types of compilations in Angular: Just-in-Time (JIT) compilation and Ahead-of-Time (AOT) compilation.

• Just-in-Time (JIT) compilation: Compiles the Angular application in the browser at runtime. Slower startup time but easier development process.

• Ahead-of-Time (AOT) compilation: Compiles the Angular application during the build process before the browser downloads and runs the code. Faster startup time but requires more setup and configuration.

Angular is a popular open-source web application framework developed by Google for building dynamic single-page applications.

• Angular is based on TypeScript, a superset of JavaScript.

• It uses components to build the user interface.

• Angular provides features like data binding, dependency injection, and routing.

• It has a powerful CLI for scaffolding and managing projects.

• Angular is commonly used for building interactive web applications.

Routing in Angular is the process of navigating between different components or views based on the URL.

• Routing allows users to navigate between different parts of an Angular application without reloading the entire page.

• Routes are defined in the app-routing.module.ts file using the RouterModule and Routes classes.

• Each route maps a URL path to a component, which is then displayed when the corresponding URL is accessed.

• Angular Router provides features like route guards, lazy lo...read more

Building blocks of Angular include components, modules, services, directives, templates, and dependency injection.

• Components are the basic building blocks of Angular applications

• Modules help organize the application into cohesive blocks of functionality

• Services are reusable code that can be injected into components

• Directives add behavior to elements in the DOM

• Templates define the UI of the application

• Dependency injection is a design pattern used to increase efficiency and mod...read more