Right off the bat, here are two things you should know: Angular 2 is a good platform for building mobile applications, and there’s no such thing as being too prepared for a job interview. If there are any takeaways you should keep in mind after reading this article, it’s those two tidbits of information.
Now that we’ve dispensed that gem of wisdom, let’s elaborate a little. We live in a time where more individuals and organizations are finding their way online. The more online users there are, the more demand there is for applications for them to use. And since more applications needed, today’s business world needs more professionals to create them.
And along with that need comes some good financial compensation! According to Glassdoor, Front End Developers with a skill of Angular programming can earn an average of $77K annually, with a potential yearly maximum of $111K.
Thus, if you’re a developer or you’re considering becoming one, you will have more than enough opportunities to be interviewed for plenty of software developer/programming positions out there. That means that you need to be ready to make a good impression, and nothing impresses like knowledge.
With that in mind, the following is a selection of Angular 2 interview questions and answers. It doesn’t matter if you’re looking to start a new career in software development, or you’re already a developer who’s just trying to upskill, you’ll find the sample of questions to be useful.
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Interviewees need to be prepared, and the selection of materials below, ranging from beginner to advanced, will help you to brush up on Angular 2 and give you a confidence boost.
So, let’s get started with some easy Angular 2 interview questions, and work our way to the tougher ones. Good luck!
Angular 2 is an open-sourced framework/platform designed to easily build high-performance, large-scale web applications, all while making them low-maintenance.
Angular 2 is a complete rewrite of Angular JS. Angular 2 is geared more towards developing mobile applications.
Angular 2’s main advantages are:
The drawbacks of Angular 2 are:
The features are:
The main components are:
Modules break your applications into logical boundaries. They are, in alphabetical order:
It’s a class in the Angular framework that emits custom events.
Directives are custom HTML elements used to extend the HTML’s power.
Routing aids in directing users to different pages depending on what option they chose on the main page. Therefore, the required Angular Component that gets rendered to the user is determined by whatever option they chose.
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.
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The file is used to provide the options for Typescript that will be used for an Angular project.
The differences are as follows:
ActivatedRoute | RouterState |
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Pipes edit, transform and format the data within the template. Bottom line, pipes takes input data and transforms it into output into something that we want.
Directives add behavior to existing DOM elements. They design reusable components.
AOT is an acronym for Ahead of Time. Rather than being compiled in the browser at runtime, components and templates are compiled at build time, they are converted to native JavaScript and HTML.
On the plus side, AOT offers faster download and rendering times. Furthermore, build time errors are more easily detected.
On the minus side, AOT creates large JavaScript bundles once compilation is done, which runs counter to what AOT is there for in the first place. Furthermore, AOT only works with HTML and CSS. Lastly, it requires a clean-up step.
All Angular applications have an error handling option. Just include the ReactJS catch library, then use the catch function. The catch function, in turn, contains a link that sends you to the Error Handler function. When in the Error Handler Function, you send the error in question to the console, while also sending the error back to the main program in order to assure continued operation of the main program.
Once this is all in place, whenever an error arises in the future, it’ll be redirected to the browser’s error console.
Decorators identify an object type or class that has been created by the TypeScript as an Angular component. The decorators provide additional metadata that dictates how the component should be processed and used when it’s run.
This is what the syntax looks like:
<div> The date of this Tutorial is {{newdate | date:"MM/dd/yy"}} </div> |
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Similar Read: Why Learn Angular? Career Benefits of Angular Certification
As mentioned earlier, developers who know Angular programming can earn a very lucrative salary. With mobile apps becoming more popular, there are more opportunities for a career in programming. It’s an employees’ market out there!
But first, you need to polish up your Angular skills, and Simplilearn can help. With the Angular Training Course, you can master front-end web development with Angular, gaining in-depth knowledge of concepts such as TypeScript, Bootstrap Grid System, Dependency Injections, SPA (Single Page Application), Directives, Forms, Pipes, Promises, Observables, and understand the testing of the Angular class.
Whether you choose self-paced learning, online classroom Flexi-Pass, or a corporate training solution, you will have access to 36 hours of instructor-led online training, three projects and a dozen quizzes, a free e-book download, and of course, a certificate upon successful completion. That certificate tells a prospective employer that you have what it takes to do the job.
Of course, if you want to really improve your Angular mastery, you need to go for the Full-Stack Developer-MEAN Stack Master’s program. This is where you take your career as a web developer to the next level, becoming an expert at the front and back-end JavaScript technologies of the most popular MEAN (MongoDB, Express, Angular and Node.js) Stack. You will learn to create applications from the ground up and start down one of the most lucrative and fast-growing web development career paths available today.
This program consists of five courses, offering you 365-day course access to 90+ live instructor-led online classes, as you tackle industry-based projects, all with the final result of you earning your master’s program certificate.
So check out Simplilearn and improve your programming skills. It’s a big world of mobile computing out there, and you can put yourself in the middle of the action by becoming an elite programmer, and Simplilearn can make the journey easier!
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John Terra lives in Nashua, New Hampshire and has been writing freelance since 1986. Besides his volume of work in the gaming industry, he has written articles for Inc.Magazine and Computer Shopper, as well as software reviews for ZDNet. More recently, he has done extensive work as a professional blogger. His hobbies include running, gaming, and consuming craft beers. His refrigerator is Wi-Fi compliant.
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