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JavaScript, HTML/CSS & NodeJS Online Test

About the test:

The JavaScript, HTML/CSS & NodeJS Test uses scenario-based MCQs to evaluate candidates on their proficiency in JavaScript programming language, NodeJS runtime environment, and front-end web development using HTML/CSS markup. The test assesses candidates' understanding of topics such as DOM manipulation, event handling, asynchronous programming, middleware, and server-side rendering.

Covered skills:

  • JavaScript Fundamentals
  • Async/ Await in JS
  • DOM Handling with JS
  • Request Response Lifecycle
  • JavaScript Coding
  • ES6 Syntax
  • HTML/ CSS Basics
  • Node JS Basics
  • API Development with Node

9 reasons why
9 reasons why

Adaface JavaScript, HTML/CSS & NodeJS Test is the most accurate way to shortlist Front-End Developers



Reason #1

Tests for on-the-job skills

The JavaScript, HTML/CSS & NodeJS Online 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 write clean and efficient JavaScript code
  • Experience with ES6 syntax and features
  • Proficiency in using async/await in JavaScript
  • Strong understanding of HTML/CSS basics
  • Ability to manipulate the DOM using JavaScript
  • Knowledge of Node.js basics
  • Understanding the request-response lifecycle of web applications
  • Experience in developing APIs with Node.js
  • Proficiency in JavaScript coding and problem-solving
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 JavaScript, HTML/CSS & NodeJS Test will be non-googleable.

🧐 Question

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

Easy

Background Properties
Solve
Consider the following shorthand CSS example:

background: #f7f7f7 url(jolie.jpg) no-repeat scroll 0px 0px;

Which of the following show the individual background properties represented by the shorthand:
 image

Easy

Colorful sentences
Solve
Our intern is writing a colorful blog post, and has written the following code. What colors will the sentences be?
 image
A: Sentence 1 will be gray, Sentence 2 will be pink.
B: Both sentences will be gray.
C: Sentence 1 will be pink, Sentence 2 will be gray.
D: Both sentences will be pink.
E: The code does not make sense; will throw an error.

Easy

Links
Solve
In the following HTML, what will be the color of link with class "mark"
 image

Medium

Let's Hack
CSS Property
Solve
Consider the following HTML and CSS:
 image
 image
Which additional CSS rule(s) will render the following image? Choose ALL that apply.
 image
A:
div{
  flex-direction : column;
  align-items : center;
}
B:
div{
  flex-direction : row;
  align-items: center;
}
C:
div{
  flex-direction: column;
  justify-content: center;
}
D:
div{
  flex-direction: row;
  justify-content: center;
}

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.

Easy

Registration Queue
Logic
Queues
Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount.
For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition.
⚠️⚠️⚠️ Note:
- The first line of the input is the length of the array. The second line contains all the elements of the array.
- The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function.
- You need to "print" the final result (not return it) to pass the test cases.

For the example discussed above, the input will be:
5
20 70 -40 30 -10

Your code needs to print the following to the standard output:
20 70 30 -40 -10

Medium

Visitors Count
Strings
Logic
Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. 
Example:

Input:
WWMMWWCCC

Expected Output: 
4W3C2M

Explanation: 
‘W’ has the highest count, then ‘C’, then ‘M’. 
⚠️⚠️⚠️ Note:
- The input is already parsed and passed to a function.
- You need to "print" the final result (not return it) to pass the test cases.
- If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’.
- If any of them have the same count, the output should follow this order - M, W, C.
🧐 Question🔧 Skill

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

Easy

Background Properties

2 mins

HTML/CSS
Solve

Easy

Colorful sentences

2 mins

HTML/CSS
Solve

Easy

Links

2 mins

HTML/CSS
Solve

Medium

Let's Hack
CSS Property

3 mins

HTML/CSS
Solve

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

Easy

Registration Queue
Logic
Queues

30 mins

Coding
Solve

Medium

Visitors Count
Strings
Logic

30 mins

Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
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
Background Properties
HTML/CSS
Easy2 mins
Solve
Colorful sentences
HTML/CSS
Easy2 mins
Solve
Links
HTML/CSS
Easy2 mins
Solve
Let's Hack
CSS Property
HTML/CSS
Medium3 mins
Solve
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
Registration Queue
Logic
Queues
Coding
Easy30 minsSolve
Visitors Count
Strings
Logic
Coding
Medium30 minsSolve
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 JavaScript, HTML/CSS & NodeJS 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 JavaScript, HTML/CSS & NodeJS 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 JavaScript, HTML/CSS & NodeJS Assessment Test

Why you should use Pre-employment JavaScript, HTML/CSS & NodeJS Online Test?

The JavaScript, HTML/CSS & NodeJS 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:

  • JavaScript Fundamentals
  • ES6 Syntax
  • Async/Await in JavaScript
  • HTML/CSS Basics
  • DOM Handling with JavaScript
  • Node.js Basics
  • Request Response Lifecycle
  • API Development with Node.js
  • JavaScript Coding
  • Handling exceptions and errors

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 JavaScript, HTML/CSS & NodeJS Online Test?

  • JavaScript Fundamentals

    JavaScript Fundamentals refers to the core concepts and principles of the JavaScript programming language. It includes topics such as variables, data types, operators, control structures, functions, and arrays. Assessing this skill helps evaluate a candidate's understanding of the foundational concepts needed to write efficient and effective JavaScript code.

  • ES6 Syntax

    ES6 Syntax refers to the features and updates introduced in ECMAScript 6, the latest version of the JavaScript language. It includes new syntax such as arrow functions, template literals, destructuring assignment, and spread syntax. Measuring this skill helps assess a candidate's familiarity with modern JavaScript syntax and their ability to write cleaner and more concise code.

  • Async/ Await in JS

    Async/Await in JavaScript is a feature that allows writing asynchronous code in a synchronous-looking manner. It provides a more readable and maintainable way to handle asynchronous operations and promises. Evaluating this skill helps determine a candidate's proficiency in managing asynchronous tasks and handling errors effectively.

  • HTML/CSS Basics

    HTML/CSS Basics refers to the foundational concepts and syntax of HTML (Hypertext Markup Language) and CSS (Cascading Style Sheets). It includes understanding HTML tags, attributes, and structure, as well as applying CSS styling, selectors, and layout techniques. Assessing this skill helps gauge a candidate's knowledge of web development fundamentals and their ability to create structured and visually appealing web pages.

  • DOM Handling with JS

    DOM Handling with JS involves manipulating and interacting with the Document Object Model (DOM) using JavaScript. It includes accessing and modifying HTML elements, dynamically adding or removing elements, and responding to user events. Measuring this skill helps determine a candidate's understanding of how JavaScript can be used to create dynamic and interactive web pages.

  • Node JS Basics

    Node.js Basics refers to the fundamental concepts and features of Node.js, a JavaScript runtime environment. It includes modules, events, streams, the Node package ecosystem, and asynchronous programming with callbacks. Assessing this skill helps evaluate a candidate's knowledge of server-side JavaScript development and their ability to build scalable and efficient web applications using Node.js.

  • Request Response Lifecycle

    The Request Response Lifecycle refers to the sequence of events that occur when a client sends a request to a server and receives a response. It includes phases such as routing, request handling, middleware execution, server processing, and response generation. Evaluating this skill helps assess a candidate's understanding of how web servers handle client requests and their ability to debug, optimize, and troubleshoot server-side code.

  • API Development with Node

    API Development with Node involves creating, managing, and interacting with application programming interfaces (APIs) using Node.js. It includes concepts such as API design, routing, authentication, data validation, error handling, and documentation. Measuring this skill helps determine a candidate's ability to build robust and well-designed APIs that can be easily integrated with other systems or platforms.

  • JavaScript Coding

    JavaScript Coding refers to the ability to write clean, efficient, and functional JavaScript code. It includes skills such as algorithmic thinking, problem-solving, code organization, and debugging. Assessing this skill helps evaluate a candidate's coding proficiency, logical reasoning, and their ability to translate requirements into working JavaScript solutions.

  • 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 JavaScript, HTML/CSS & NodeJS Test to be based on.

    Variable declaration
    Data types
    Operators
    Control flow
    Functions
    Array methods
    Object-oriented programming
    Closure
    Promises
    Error handling
    Spread and rest operators
    Destructuring
    Arrow functions
    Template literals
    Hoisting
    Prototypes
    Event handling
    CSS selectors
    CSS box model
    Positioning
    Flexbox
    Grid system
    Viewport units
    CSS animation
    DOM manipulation
    Event delegation
    AJAX
    Promises in JavaScript
    Callback functions
    Express.js
    Routing
    Form handling
    Middleware
    HTTP methods
    API development
    Database integration
    Authentication and authorization
    Error handling in Node.js
    Test-driven development
    Modularization
    NPM package management
    CommonJS modules
    Regular expressions
    Debugging
    Code optimization
    Data structures
    Algorithms
    Recursion
    Sorting
    Asynchronous programming
    Event-driven architecture
    Memory management
    Prototype-based inheritance
    Closures in JavaScript
    Object manipulation
    Code styling conventions
    Unit testing
    Debugging tools
    CLI tools
    Command line arguments
    Version control
    Git workflows

What roles can I use the JavaScript, HTML/CSS & NodeJS Online Test for?

  • Front-End Developer
  • Full-Stack Developer
  • Web Developer
  • JavaScript Developer
  • NodeJS Developer
  • HTML/CSS Developer

How is the JavaScript, HTML/CSS & NodeJS Online 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

  • Working with variables and data types
  • Understanding scope and closures
  • Manipulating arrays and objects
  • Using control flow statements
  • Implementing event handling and listeners
  • Building responsive web layouts
  • Applying CSS styling and animations
  • Using the Document Object Model (DOM)
  • Consuming and manipulating APIs
  • Working with server-side frameworks and modules
  • Performing asynchronous operations with promises

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

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

JavaScript, HTML/CSS & NodeJS 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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