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JavaScript Online Test

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The JavaScript online test assesses candidates' knowledge of programming in the JavaScript language and its main application, Web front-end development.

It's an ideal test for pre-employment screening. A good JavaScript developer needs to be able not only to solve problems using JavaScript as the programming language but also to understand its specifics, such as prototypes, closures, event loop, and variable scope.

This online test requires candidates to solve coding problems in JavaScript and find and fix bugs in JavaScript programs.

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Free Sample Questions for JavaScript Test

Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.

Ensure

3min
  -  
Easy  
  -  
CODE

JavaScript Error handling Language Public

Implement the ensure function so that it throws an error if called without arguments or the argument is undefined. Otherwise it should return the given value.

Remove Property

7min
  -  
Easy  
  -  
CODE

JavaScript Language Objects Public

Implement the removeProperty function which takes an object and property name, and does the following:

If the object obj has a property prop, the function removes the property from the object and returns true; in all other cases it returns false.

Date

10min
  -  
Easy  
  -  
CODE

JavaScript Strings Public

Write a function that converts user entered date formatted as M/D/YYYY to a format required by an API (YYYYMMDD). The parameter "userDate" and the return value are strings.

For example, it should convert user entered date "12/31/2014" to "20141231" suitable for the API.

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Premium Questions for JavaScript Test

TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.

Question Names

These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.

Filter, Positive Numbers, Function Wrapper, Double, Truthy Expressions, Word Count, New Folder, Log Patch, Loading Bar, Segment, Hobbies, A Tag, Confirm, Date Transform, Height, Hide Button, Log Parser, Paragraph, Product Rating, Products, Row Appender, Scale Font Size, Snapshot, Username, Vectors, Timer, Screen, Array Search, Post Comment, Cards, Reorder, Validation, Table of Names, Trading Data Paging, Memory Game
Covered Skills

Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.

JavaScript Arrays Closures Exceptions DOM manipulation Event handling Language Strings Monkey patching HTML5 Arithmetic Iteration Attribute manipulation Dialog box Regex Objects Asynchronous calls Serialization XML JSON Sorting Content manipulation Styling Callback Bug fixing Classes ECMAScript 2015 Recursion Forms Pagination
Recommended Job Roles

These are the job roles that we recommend for the JavaScript online test.

JavaScript Developer
Web Front-End Developer

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