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Adaface Public JavaScript Questions

Here are some sample JavaScript questions from our premium questions library (10273 non-googleable questions).
🧐 Spørsmål🔧 Ferdighet💪 Vanskelighet⌛ Tid
Async venter på løfter - What will the following code o
Promises Async-Await
JavaScriptMedium2 min
Prototyper og omfang - What will the following code o
JavaScriptMedium2 min
Promise Resolve - What does the following code o
Promises Async-Await
JavaScriptLett2 min
Kast, prøv, async - What does the following JS cod
Promises Async-Await
JavaScriptLett2 min

Adaface JavaScript questions are used by enterprises worldwide

Morgan Stanley
SG Government
Ernst and Young
Optimum Solutions
United Nations
Love Bonito

About Adaface JavaScript Questions

Questions are designed by JavaScript experts to cover the topics relevant to your job description. Some of the popular topics the questions will cover are:

  • Control Flow
  • Error Handling
  • Data Models
  • Asynchronity
  • DOM Manipulation
  • NODE
  • Functional Approach
  • Object Oriented Approach
  • Prototype
  • Class
  • Scope

Types of Javascript Questions to expect at Adaface:

Questions are designed by experts in the Java programming language to test for on-the-job skills. Some of the popular topics the questions will cover are:

  • Practical implication based Javascript queries
  • Real on-the-job Javascript specific scenario-based problems
  • Evaluations to test analytical thinking while solving problems
  • Progressive difficulty based Javascript problems

What Topics are Adaface Javascript questions based on:

The following statements describe the type of Javascript questions one can expect when using Adaface's pre-assessment tool:

  • Hoisting
  • Implicit type coercion
  • NaN property
  • Primitive types
  • Non-primitive types
  • String coercion
  • Boolean coercion
  • Logical operators
  • Higher Order functions
  • Currying
  • Scope
  • Scope chain
  • Closures
  • Object prototypes
  • Callbacks
  • Memoization
  • Recursion
  • Arrow function
  • Rest parameter
  • Spread operator
  • Promises
  • WeakSet
  • WeakMap
  • Object Destructuring
  • Temporal Dead Zone

How are Adaface Javascript questions customized?

  • Adaface Javascript questions are customized for different difficulty levels and solving durations
  • Customized to assess Ideal candidate personas for right jobs
  • Tests for specific on-the-job Javascript skills
  • Non-googleable questions to prevent cheating during tests

Do’s and Don’ts of selecting Javascript questions for assessments:


  • Use diversified questions from varied Javascript topics to test the skill range of candidates
  • Utilize questions of different difficulty levels to test candidates
  • Include questions that are related to on-the-job skill requirements
  • Pick questions that are relevant for the experience level you are targeting
  • Make sure the questions can be understood by a non-native English speaker (easy-to-read questions because programmers should spend time solving the question, not understanding it)
  • Ensure that the questions have a granular (non-binary) scoring
  • Use aptly timed assessments that can be fulfilled within 45-60 mins to make the most optimal use of the time utilized


  • Avoid using trick questions to test the candidates as they are ineffective in testing their on-the-job skills
  • Avoid using lengthy questions as they do not provide an ideal scenario to test the candidates
  • Avoid unnecessary puzzle trends as they are ineffective in assessing the skills required for the job
  • Avoid questions that test very niche concepts that a strong candidate might or might not have come across on-the-job
  • Do not include unnecessarily difficult questions that might or might not test the candidates potential
  • Search Adaface Public Questions
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