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Technical Aptitude & JavaScript Online Test

The Technical Aptitude & JavaScript Online Test uses scenario-based MCQs to evaluate candidates on their technical aptitude, logical reasoning, and JavaScript programming skills. The test assesses candidates' understanding of topics such as data structures, algorithms, programming paradigms, syntax, and programming logic, as well as their proficiency in using JavaScript to solve programming problems. Candidates are evaluated on their ability to analyze problems, identify patterns, and develop effective solutions using programming concepts, as well as their proficiency in using JavaScript to write functional code.

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Screen candidates with a 40 mins test

Test duration:  40 mins
Difficulty level:  Moderate
Availability:  Ready to use
Questions:
  • 5 Technical Aptitude MCQs
  • 5 JavaScript MCQs
  • 1 JavaScript Coding Question
Covered skills:
JavaScript basics
Errors and Exception Handling in JS
ES6
Structuring and styling HTML DOM
Programming fundamentals
Algorithm Basics
Data Structures
JavaScript Programming
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Use the Technical Aptitude & JavaScript Test to shortlist qualified candidates

The Technical Aptitude & JavaScript 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:

  • Efficiently handle exceptions and errors
  • Demonstrate knowledge of ES6 features
  • Effectively structure and style HTML DOM
  • Apply programming fundamentals
  • Understand algorithm basics
  • Implement various data structures
  • Write JavaScript programs
  • Utilize JavaScript's basic syntax and functions
  • Apply JavaScript programming concepts
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Screen candidates with the highest quality 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 15,000+ questions. The actual questions on this Technical Aptitude & JavaScript Test will be non-googleable.

🧐 Question

Medium

Decryptor
Strings
Solve
What does the following pseudo code print?
 image

Hard

Fibonacci codes
Time Complexity
Pseudo Code
Solve
Here are three pseudocodes for calculating the Nth Fibonacci number. Which of the following statements about these codes are true?
 image
A: Time complexity/efficiency of CODE 1, CODE 2, CODE 3 is the same.
B: CODE 2 is more space-efficient than CODE 3.
C: CODE 3 is more space-efficient than CODE 2.
D: CODE 2 is more time-efficient than CODE 1.
E: CODE 3 is more time-efficient than CODE 1.

Hard

Palindrome Test cases
Strings
Solve
Go through the following faulty palindrome detection pseudocode and test cases. For which of the test cases would the code return true?
 image
Testcases
A: a
B: aba
C: aaa
D: aac

Medium

Rewards Activities Order
Database Connection
Solve
A new popular app tracks the activities performed by its users and grants them rewards based on each individual's total activities performed in a year. This data is maintained in a database table (activitesinfo), with the following columns: userid, totalactivities, reward. This year, due to fundraising activity, the company has decided to further reward its users by enhancing the reward as per the following formula: If reward < = 4000, increase it by 2%, If 4000 < reward <= 8000, increase it by 4%, If reward > 8000, increase it by 6%.
The tech team has written three different scripts to calculate increment for each slab, each script is to run as a separate transaction. Here are the three scripts:
Script 1:
For users with reward <= 4000, set reward = reward * 1.02

Script 2:
For users with reward > 4000 and reward <= 8000, set reward = reward * 1.04

Script 3:
For users with reward > 8000, set reward = reward * 1.06
Each script is to be executed separately. Which of the following options will update the rewards as expected:
A: Execute Script 1 followed by Script 2 followed by Script 3
B: Execute Script 2 followed by Script 3; Script 1 running concurrently throughout
C: Execute Script 3 followed by Script 2; Script 1 running concurrently throughout
D: Execute Script 3 followed by Script 2 followed by Script 1
E: Execute Script 2 followed by Script 3 followed by Script 1

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

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

Hard

Find the customer with the most spend 2
JOIN
GROUP BY
ORDER BY
Solve
Given details of customers, products, and sales, write a SQL query to find the customer with the highest spend. The customer with the highest spend is the one who has spent the most money on purchases. The query should return the full name of the customer and the total amount spent by the customer rounded off to the nearest integer.
full_name is the concatenation of first_name and last_name separated by a space. Eg:
first_name = 'Alice', last _name = 'Brown' => full_name = 'Alice Brown'
You can assume that there will always be non-empty first_name and non-empty last_name entries for all customers in the table.
 image

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

Decryptor
Strings

2 mins

Technical Aptitude
Solve

Hard

Fibonacci codes
Time Complexity
Pseudo Code

2 mins

Technical Aptitude
Solve

Hard

Palindrome Test cases
Strings

2 mins

Technical Aptitude
Solve

Medium

Rewards Activities Order
Database Connection

3 mins

Technical Aptitude
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

Easy

Registration Queue
Logic
Queues

30 mins

Coding
Solve

Hard

Find the customer with the most spend 2
JOIN
GROUP BY
ORDER BY

10 mins

SQL
Solve

Medium

Visitors Count
Strings
Logic

30 mins

Coding
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Decryptor
Strings
Technical Aptitude
Medium2 mins
Solve
Fibonacci codes
Time Complexity
Pseudo Code
Technical Aptitude
Hard2 mins
Solve
Palindrome Test cases
Strings
Technical Aptitude
Hard2 mins
Solve
Rewards Activities Order
Database Connection
Technical Aptitude
Medium3 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
Registration Queue
Logic
Queues
Coding
Easy30 minsSolve
Find the customer with the most spend 2
JOIN
GROUP BY
ORDER BY
SQL
Hard10 minsSolve
Visitors Count
Strings
Logic
Coding
Medium30 minsSolve

Test candidates on core Technical Aptitude & JavaScript Hiring Test topics

JavaScript basics: JavaScript basics refers to the fundamental concepts and syntax of the JavaScript programming language. This skill should be measured in the test to determine a candidate's knowledge and understanding of the core principles of JavaScript, such as variables, data types, operators, and control flow.

Errors and Exception Handling in JS: Errors and Exception Handling in JavaScript involves identifying and handling errors and exceptions that can occur during code execution. This skill should be measured in the test to assess a candidate's ability to handle and debug errors effectively, ensuring robustness and reliability of JavaScript applications.

ES6: ES6, also known as ECMAScript 2015, is an important update to the JavaScript language, introducing new features and improvements. This skill should be measured in the test to evaluate a candidate's familiarity with ES6 concepts, such as arrow functions, template literals, destructuring, and modules, which are widely used in modern JavaScript development.

Structuring and styling HTML DOM: Structuring and styling HTML DOM (Document Object Model) involves manipulating and organizing the elements of a webpage using JavaScript. This skill should be measured in the test to gauge a candidate's ability to dynamically update and modify the structure, content, and appearance of a webpage, enhancing user experience and interactivity.

Programming fundamentals: Programming fundamentals encompass the foundational principles of coding, including problem-solving techniques, algorithms, and logic. This skill should be measured in the test to assess a candidate's ability to think critically, approach problems systematically, and write clean and concise code, essential qualities for a competent JavaScript developer.

Algorithm Basics: Algorithm Basics involve understanding and implementing common algorithms and data structures, such as searching, sorting, and linked lists. This skill should be measured in the test to evaluate a candidate's knowledge and proficiency in leveraging algorithms and data structures to optimize code performance and solve complex problems effectively.

Data Structures: Data Structures refer to the organization and storage of data in a computer system. This skill should be measured in the test to assess a candidate's familiarity with different data structures, such as arrays, objects, stacks, queues, and trees, and their ability to choose and implement appropriate data structures based on the specific requirements of a JavaScript application.

JavaScript Programming: JavaScript Programming involves the implementation and execution of JavaScript code to create interactive and dynamic web applications. This skill should be measured in the test to evaluate a candidate's proficiency in writing efficient and reliable JavaScript code, ensuring functionality, performance, and maintainability of web applications.

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Have questions about the Technical Aptitude & JavaScript Hiring Test?

How does pricing work?

You can check out our pricing plans.

Can I customize the test?

Yes, absolutely. Custom assessments are set up within 48 hours 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. You can also customize a test by uploading your own questions.

Can I combine multiple skills into one test?

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.

What roles can I use the Technical Aptitude & JavaScript Test for?

Here are few roles for which we recommend this test:

  • Front-end Developer
  • Web Developer
  • UI Developer
  • JavaScript Developer
Can I see a sample test, or do you have a free trial?

Yes!

The free trial includes one sample technical test (Java/ JavaScript) and one sample aptitude test that you will find in your dashboard when you sign up. You can use it to review the quality of questions and the candidate experience of giving a test on Adaface.

You can preview any of the 500+ tests and see the sample questions to decide if it would be a good fit for your requirements.

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.

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.

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