75 AngularJS interview questions to ask expert developers

Assessing AngularJS developers can be a drawn-out process, as this role has many technical duties. You may already know that using the right interview questions helps you determine their technical expertise to use AngularJS. 

But you should also be aware that interview questions should engage your candidates and help you create a dialogue.

This article, with 75 AngularJS interview questions, will help you put together your own list of questions for your candidates. Combine interviewing with skills assessments and our AngularJS skills test to create the perfect strategy to check your candidates’ suitability.

Read on for the best questions and more on skills testing – the ultimate candidate assessment method.

28 general AngularJS interview questions to ask applicants

When you start the interview, ask candidates a few of these general AngularJS questions to test their basic knowledge of the framework.

1. What do you know about AngularJS?

2. Name the main features of AngularJS.

3. What do you know about scope in AngularJS?

4. What do services do in AngularJS?

5. What is the difference between an Angular and a JavaScript expression?

6. Tell me what you know about directives.

7. Name the main AngularJS directives.

8. Can you explain how routes work in AngularJS?

9. Can you explain what data binding is?

10. Name three advantages of using the AngularJS framework.

11. What do you understand about AngularJS string interpolation?

12. What does the link function do in AngularJS?

13. Tell me what you know about the factory function in AngularJS.

14. Which skills are important for AngularJS engineers?

15. Name three characteristics of “scope.”

16. What do you understand about dependency injection?

17. How is Backbone.js different from AngularJS?

18. Who currently develops AngularJS?

19. Do you understand what the OrderBy filter does in AngularJS? Explain its function.

20. Tell me what you understand about NG-click directives.

21. Which AngularJS components can engineers inject as a dependency?

22. Name the common functions engineers use for the Angular Global API.

23. Give us some examples of the AngularJS scope lifecycle phases.

24. Name some benefits of AngularJS.

25. Name some drawbacks of AngularJS.

26. Is AngularJS JavaScript dependent?

27. Is AngularJS JQuery dependent?

28. Which IDEs do programmers use for AngularJS development?

5 general AngularJS interview questions and sample answers

Here are five of the important general AngularJS interview questions and their sample answers to help you check their knowledge

1. What is the difference between an Angular and a JavaScript expression?

Although JavaScript and Angular expressions are both code snippets enclosed in binding, they have several differences:

• The Angular framework evaluates expressions against scope objects, and developers evaluate JavaScript expressions against the global window

• Developers write Angular expressions in HTML, which is not possible with JavaScript expressions

• Programmers cannot use function declarations for Angular expressions, but they can with JavaScript expressions

Correct answers to this AngularJS interview question will show your candidates’ knowledge, but you can also use our JavaScript skills test to learn more about their JavaScript abilities.

2. Do you understand what the OrderBy filter does in AngularJS? Explain its function.

Skilled applicants will understand that developers use the AngularJS OrderBy filter to order an array based on the specified criteria. For example, programmers may use the OrderBy filter to sort or order each product by price.

Look for experts who can provide a code sample that shows how the OrderBy filter works when responding to this question.

3. Name the common functions engineers use for the Angular Global API.

A few Angular Global API functions candidates should mention to show their understanding of AngularJS include:

• Angular.isString

• Angular.isNumber

• Angular.uppercase

Listen out for answers that explain what these Angular Global API functions enable developers to do. For example, developers use Angular.uppercase function to convert strings to uppercase.

4. Give us some examples of the AngularJS scope lifecycle phases.

Candidates should know that AngularJS scope lifecycle phases are the stages scope data passes through when developers load Angular apps in a browser. If they are familiar with the scope lifecycle, they will mention the following five phases when responding to this question:

• Scope creation – the developer creates the root scope.

• Watcher registration – developers use registers to watch scope values in code templates.

• Model mutation – the scope data changes. During this phase, developers use the $apply() scope function to modify functions and the $digest() function to update the DOM elements and watches.

• Mutation observation – developers execute the $digest() function to run the watches.

• Scope destruction – developers destroy the unneeded child scopes using the $destroy() function.

5. What do you know about AngularJS?

If your candidates have used AngularJS, they will know developers use this JavaScript framework to create simple web-page applications. It is one of the top 10 frameworks for web applications, which 20.39% of developers use. It enables programmers to use HTML as a template language.

Check whether your applicants understand how to use AngularJS by asking them to complete an Angular test in a skills assessment.

25 AngularJS interview questions about technical definitions

Learn about your applicants’ technical knowledge of the framework by asking them some of these 25 AngularJS interview questions.

1. Define Angular expressions.

2. Can you explain what the browser object model is?

3. Can you explain what $rootScope is?

4. What do you know about the auto bootstrap process?

5. Do you understand what a web pack is? Explain what it is.

6. Tell me what you know about single-page applications.

7. What do you understand about the service method in AngularJS?

8. Explain what $routeProvider does in AngularJS.

9. What do you know about scope hierarchies in AngularJS?

10. Explain what the digest cycle is in AngularJS.

11. Tell me what you know about immediately invoked function expressions.

12. What does authentication mean in AngularJS?

13. What is AngularJS Material?

14. How is Angular 7 different from Angular 8?

15. How are Angular component techniques different from directive methods?

16. What do you understand about ECMAScript?

17. Explain what Traceur is in JavaScript.

18. Do you know what templates are in AngularJS? Explain two of their features.

19. Do you know what parameterized pipes are in AngularJS? 

20. What do you understand about isolated unit tests?

21. What do you know about DSL animation functions?

22. Tell us what you know about AngularJS modules.

23. Can you explain what one-way data binding is in AngularJS?

24. Can you explain what two-way data binding is in AngularJS?

25. Can you describe the difference between the compile and link functions in AngularJS?

5 AngularJS interview questions and sample answers about technical definitions

When reviewing your applicants’ technical knowledge, refer to our sample answers to these five AngularJS interview questions.

1. Tell me what you know about single-page applications.

With this AngularJS interview question, you can test your applicants’ technical knowledge and experience with single-page applications (SPAs). 

Applicants should explain that this type of website or application interacts dynamically with users and that their components fit on one page. Those who can also mention that these applications perform navigation without page refresh requirements are ones to watch. 52% of users expect applications to load within two seconds, which is possible with SPAs.

2. Define Angular expressions.

Angular expressions are snippets of code that developers place in interpolation bindings.  Developers use them to bind HTML to application data. Once the developer writes an expression using operators, literals, and/or variables, AngularJS resolves it.

3. Can you explain what the browser object model is?

A browser object model (BOM) is a convention that specifies global browser objects, including the console, window, and local storage. Developers use them to interact with the browser and call the window functions. This method works with or without specifying the window function in the syntax.

4. What do you know about scope hierarchies in AngularJS?

Asking applicants this technical AngularJS interview question requires them to show their scope hierarchy knowledge. The key to this question involves specifying that applications’ controllers can create additional child scopes arranged in a hierarchical structure – hence the name “scope hierarchy.”

5. Can you describe the difference between the compile and link functions in AngularJS?

Applicants should explain that developers use the compile function as a template to make changes to the DOM and the link function to register DOM listeners. An essential detail that candidates may also mention is that developers can also use the compile function to collect all the directives.

12 AngularJS interview questions about framework processes

Learn about your applicants’ methods to complete processes with AngularJS, and ask them a few of the followng interview questions.

1. Explain how you would set cookies in AngularJS.

2. Explain how you would get cookies in AngularJS.

3. Explain how you would clear cookies in AngularJS.

4. When would you use double-click events in AngularJS?

5. In which situation would you use NG-include?

6. How would you integrate HTML with AngularJS?

7. How would you complete the HTML compilation process? 

8. How would you read server data using Ajax calls in AngularJS?

9. What method would you use to initialize a select box in AngularJS?

10. How would you create projects in AngularJS with the CLI?

11. Tell me how you would create a nested controller in AngularJS.

12. What method would you use to convert strings into currencies?

5 AngularJS interview questions and sample answers about framework processes

Check the sample answers to these five AngularJS interview questions to gauge the accuracy of your candidates’ responses.

1. Explain how you would set cookies in AngularJS.

Skilled applicants can explain how they would set cookies in AngularJS. They will explain that the put() method is the easiest approach to achieve this. The syntax applicants should provide when responding to this AngularJS interview question is:

$cookies.put()

2. Explain how you would get cookies in AngularJS.

Test your applicants’ knowledge of AngularJS framework processes by asking them this question. Candidates who mention that developers should use the get() method may be a good match for your organization. They should also provide the following syntax to prove their expertise:

$cookies.get()

3. Explain how you would clear cookies in AngularJS.

Clearing cookies in AngularJS requires developers to use the remove() command. Applicants should know that programmers must use the following syntax to complete this process:

$cookies.remove

4. How would you complete the HTML compilation process? 

A few steps developers should complete when completing the HTML compilation process include:

• Parsing the HTML into DOM

• Using the $compile() method to complete the DOM compilation

• Ensuring the method transverses the DOM

• Linking a template with a scope by using the linking function

5. How would you create projects in AngularJS with the CLI?

AngularJS developers must first install the command line interface. They can then run the ng new project-name command to create projects in AngularJS with the command line interface.

10 AngularJS interview questions about skills

Test your applicants’ skill-related knowledge by asking them some of these 10 AngularJS skills-based interview questions.

1. Why are HTML skills crucial for AngularJS developers?

2. Why are CSS skills necessary for AngularJS developers?

3. How would you rate your Angular skills?

4. Are TypeScript skills required for AngularJS developers? Why?

5. How would you rate your Git version control skills?

6. Do AngularJS developers need good communication skills? Explain why.

7. How is attention to detail critical for AngularJS developers?

8. How would you rate your time-management skills?

9. How would your boss rate your debugging skills?

10. Explain why JavaScript skills are vital for AngularJS developers.

5 skill-related AngularJS interview questions and sample answers

Use our sample answers to these skills-related AngularJS interview questions to assess your applicants’ responses.

1. Explain why JavaScript skills are vital for AngularJS developers.

The key to assessing your candidates’ responses to this question is to consider if candidates understand the following facts:

• AngularJS uses the JavaScript-based programming language called TypeScript

• JavaScript is a universal language with libraries like AngularJS

• AngularJS is a JavaScript framework

Candidates who recognize these facts will explain that JavaScript skills are crucial for AngularJS developers. But for an in-depth review of your applicants’ JavaScript skills, use our JavaScript skill test (available on our free plan).

2. Do AngularJS developers need good communication skills? Explain why.

86% of employees blame poor communication for failures in business. This statistic is one factor that emphasizes the importance of good communication for developers. AngularJS developers also need to collaborate with team members and seek feedback when working on projects – two key reasons why good communication is critical.

Before you ask developers this interview question, give them a Communication skills test to assess their collaboration and active listening abilities. Those who perform well may be a good match for your team.

3. Why are HTML skills crucial for AngularJS developers?

Since AngularJS enables you to use and extend HTML’s syntax for clear component expression, HTML is a useful skill for AngularJS developers. Listen out for responses that explain how developers can add AngularJS to HTML pages using a tag.

It’s also worth giving applicants an HTML skill test as part of their AngularJS assessment to test their abilities.

4. Why are CSS skills necessary for AngularJS developers?

Developers rendering apps in a browser must build user interfaces using HTML and CSS, which is the key reason your applicants should mention when responding to this question. CSS knowledge can also help developers tweak their interfaces.

It’s simple to assess your applicants’ CSS skills. Head to our skill test library and use the CSS skill test when building your assessment, then invite candidates to take the test.

5. Are TypeScript skills required for AngularJS developers? Why?

Most developers prefer using TypeScript to write codes as it facilitates error-free coding. It’s also ideal for creating robust and scalable code in AngularJS, which is why TypeScript skills are important for AngularJS developers. Hiring a TypeScript professional can significantly enhance your team's efficiency in AngularJS development.

To save time and assess your candidates’ skills before you create a shortlist, use our TypeScript skill test.

When should you use AngularJS interview questions?

For a smooth hiring process, the best assessment technique is to use AngularJS interview questions after your candidates complete their skills assessments. This helps you create shortlists in a fraction of the time required for resume screening.

With TestGorilla, candidate comparison is easy, reducing time-to-hire metrics is simple, and avoiding unconscious bias when creating a shortlist becomes effortless.

So ensure you give candidates an AngularJS assessment before you invite them to an interview to make your hiring processes easier.

Assess candidates with AngularJS interview questions and skill assessments

If you’re a non-technical recruiter or don’t understand AngularJS, don’t panic – you can easily assess applicants with skills assessments and AngularJS interview questions.

Remember, experts peer-review our skills tests to give you the most reliable tools for evaluating applicants. Once you’ve used the results to create a candidate shortlist, you can use our AngularJS interview questions for a more in-depth skills review.

Get started with TestGorilla today.