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About the test:

The ExpressJS Test evaluates a candidate's knowledge and skills in using ExpressJS, Node.js, and Javascript for web development. It covers topics such as routing, middleware, handling requests and responses, working with databases, and building APIs.

Covered skills:

  • Routing in Express
  • Serving Static Files in Express
  • Creating and Using Middlewares in Express
  • Debugging Express
  • Javascript Coding
  • Setting up Express application
  • Routing in Express
  • Using Template Engines
  • Node.js Fundamentals

9 reasons why
9 reasons why

Adaface ExpressJS Assessment Test is the most accurate way to shortlist Full Stack Developers



Reason #1

Tests for on-the-job skills

The ExpressJS Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

  • Ability to set up and configure an Express.js application
  • Knowledge of routing in Express.js for handling different endpoints
  • Understanding of serving static files in Express.js
  • Experience in creating and using middlewares in Express.js
  • Ability to use template engines for dynamic content in Express.js
  • Proficiency in debugging Express.js applications
  • Understanding of Node.js fundamentals
  • Strong knowledge of JavaScript coding
  • Experience in handling exceptions and errors
  • Capability of optimizing performance in Express.js applications
Reason #2

No trick questions

no trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface
Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this ExpressJS Test will be non-googleable.

🧐 Question

Medium

I/O cycle and main module
Event Loop
Solve
Review the following NodeJS code:
 image
Pick the correct statements:

A: X will be logged after Y always
B: Y will be logged after X always
C: The order of executing timeout and immediate callbacks is non-deterministic and is bound by the performance of the process
D: In this case, the function calls are scheduled in the main module and not in the I/O cycle
E: In this case, the function calls are scheduled in the I/O cycle so setImmediate is always executed before any timers scheduled in the I/O phase, independently of how many timers are left

Easy

Res methods
Solve
If none of the methods (res.download, res.end, res.json, res.jsonp, res.redirect, res.render, res.send, res.sendFile, res.sendStatus) are called from a route handler to terminate request response cycle, what happens to the the client request?
A) Will be left hanging indefinitely

B) Will get an internal server error - 500 

C) Will get a service unavailable error - 503

D) Will be left hanging for a while and then request timeout error - 408

Medium

Phases and Timers
Event Loop
Solve
Review the following NodeJS code:
 image
Pick the correct statements:

A: Adaface will be logged after Lovelace.
B: Lovelace will be logged after Adaface.
C: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback which takes 10 seconds. Only after this is finished, the event loop will execute the timers that are finished. So the timeout call back will actually be executed after 205 ms even though it is scheduled to be run after 200 ms
D: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback. While executing the callback, the scheduled timer becomes ready to be executed. So the runtime executes the timer and then completes processing the callback.

Medium

Async Await Promises
Promises
Async-Await
Solve
What will the following code output?
 image
A: 24 after 5 seconds and after another 5 seconds, another 24
B: 24 followed by another 24 immediately
C: 24 immediately and another 24 after 5 seconds
D: After 5 seconds, 24 and 24
E: Undefined
F: NaN
G: None of these

Medium

Bitcoin prices
Axios
Promises
Solve
Review the following JavaScript code and pick the correct options: 
 image
Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?

Medium

My Module
Scope
Solve
What will the output of the following JavaScript code be?
 image
 image

Medium

Promise Resolve
Promises
Async-Await
Solve
What does the following code output? 
 image

Easy

Throw, Try, Async
Promises
Async-Await
Solve
What does the following JS code output?
 image
🧐 Question🔧 Skill

Medium

I/O cycle and main module
Event Loop

2 mins

NodeJS
Solve

Easy

Res methods

3 mins

NodeJS
Solve

Medium

Phases and Timers
Event Loop

2 mins

NodeJS
Solve

Medium

Async Await Promises
Promises
Async-Await

2 mins

JavaScript
Solve

Medium

Bitcoin prices
Axios
Promises

2 mins

JavaScript
Solve

Medium

My Module
Scope

2 mins

JavaScript
Solve

Medium

Promise Resolve
Promises
Async-Await

2 mins

JavaScript
Solve

Easy

Throw, Try, Async
Promises
Async-Await

2 mins

JavaScript
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
I/O cycle and main module
Event Loop
NodeJS
Medium2 mins
Solve
Res methods
NodeJS
Easy3 mins
Solve
Phases and Timers
Event Loop
NodeJS
Medium2 mins
Solve
Async Await Promises
Promises
Async-Await
JavaScript
Medium2 mins
Solve
Bitcoin prices
Axios
Promises
JavaScript
Medium2 mins
Solve
My Module
Scope
JavaScript
Medium2 mins
Solve
Promise Resolve
Promises
Async-Await
JavaScript
Medium2 mins
Solve
Throw, Try, Async
Promises
Async-Await
JavaScript
Easy2 mins
Solve
Reason #4

1200+ customers in 75 countries

customers in 75 countries
Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment ExpressJS Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests
Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the ExpressJS Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

invite candidates
Reason #7

Detailed scorecards & benchmarks

View sample scorecard
Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

test completion rate
Reason #9

Advanced Proctoring


Learn more

About the ExpressJS Online Test

Why you should use Pre-employment ExpressJS Test?

The ExpressJS Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

  • Routing in Express
  • Setting up Express application
  • Serving Static Files in Express
  • Creating and Using Middlewares in Express
  • Using Template Engines
  • Debugging Express
  • Node.js Fundamentals
  • Javascript Coding
  • Authentication and Authorization in Express
  • Database Integration in Express

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the ExpressJS Test?

  • Routing in Express

    Routing in Express refers to how the application handles different HTTP requests and directs them to the appropriate route. It essentially maps the requested URL to the corresponding handler function or middleware, making it a crucial skill for building dynamic web applications.

  • Setting up Express application

    Setting up an Express application involves installing the necessary dependencies, configuring the application settings, and creating the basic file structure. This skill is important because it lays the foundation for developing and running an Express application.

  • Serving Static Files in Express

    Serving static files in Express allows the application to serve HTML, CSS, JavaScript, and other static files to the client. It ensures that the web pages are properly rendered and the necessary assets are loaded, making it an essential skill for web development.

  • Creating and Using Middlewares in Express

    Middlewares in Express are functions that have access to the request and response objects. They can be used to add functionality, perform validation, handle errors, and more. Being able to create and use middlewares is important for building robust and scalable applications.

  • Using Template Engines

    Template engines in Express allow for the dynamic generation of HTML pages by combining templates with data. They simplify the process of rendering HTML on the server and enable code reuse. Understanding and using template engines is crucial for developing dynamic web applications.

  • Debugging Express

    Debugging Express involves identifying and fixing issues or errors in the application code. It requires understanding the error messages, using debugging tools, and troubleshooting the code to ensure smooth operation. Being proficient in debugging Express applications is necessary to deliver high-quality software.

  • Node.js Fundamentals

    Node.js fundamentals encompass the core concepts and features of Node.js, including event-driven architecture, non-blocking I/O, modules, and file system operations. Knowledge of Node.js fundamentals is important as Express.js is built on top of Node.js and understanding how it works under the hood helps in building efficient applications.

  • Javascript Coding

    Javascript coding refers to the ability to write clean, efficient, and maintainable code using the Javascript programming language. Strong Javascript coding skills are essential for developing server-side applications using Express.js and effectively utilizing the various features and functionalities it offers.

  • Full list of covered topics

    The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for ExpressJS Test to be based on.

    Routing
    Middleware
    Static Files
    Template Engines
    Debugging
    Node.js
    JavaScript
    Express.js Setup
    Express.js Configuration
    GET Requests
    POST Requests
    URL Parameters
    Query Parameters
    Route Handlers
    Middleware Functions
    Error Handling Middleware
    Serving Static Files
    Static File Middleware
    Template Engines in Express.js
    Data Binding
    Layouts and Partials
    Debugging Techniques
    Node.js Basics
    Event-driven Architecture
    Node.js Modules
    CommonJS
    Asynchronous Programming
    Closures
    Promises
    Callback Functions
    Data Types in JavaScript
    Variables and Data Structures
    Operators
    Control Flow
    Functions
    Arrays
    Objects
    Classes
    Arrow Functions
    Hoisting
    Prototypes
    Scope
    Error Handling in JavaScript
    Exception Handling
    Performance Optimization
    Memory Management
    Code Profiling
    Code Optimization
    Testing and Debugging
    Async/Await
    ES6 Features
    IIFE
    Callbacks
    Closure
    Destructuring
    Promises
    Template Literals
    Spread Operator

What roles can I use the ExpressJS Test for?

  • Full Stack Developer
  • Backend Developer
  • Node.js Developer
  • Web Developer

How is the ExpressJS Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

  • Error Handling in Express
  • RESTful API Development
  • Secure Coding Practices
  • Performance Optimization in Express
  • Working with WebSockets in Express
  • Unit Testing in Express
  • Deployment and Continuous Integration
  • Scaling and Load Balancing
  • Containerization and Orchestration
  • Microservices Architecture
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

ExpressJS Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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40 min tests.
No trick questions.
Accurate shortlisting.
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