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JavaScript Algorithms and Node.js Online Test

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The JavaScript Algorithms and Node.js online test assesses candidates' algorithmic thinking skills in the JavaScript language, and knowledge of specific Node.js features.

It's an ideal test for pre-employment screening. A good Node.js developer needs to be able to solve problems using Node.js, and also use JavaScript to design and implement algorithms that are both correct and efficient.

This online test requires candidates to solve coding problems in JavaScript and Node.js.

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Free Sample Questions for JavaScript Algorithms and Node.js Test

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

Song

15min
  -  
Easy  
  -  
CODE

JavaScript Algorithmic thinking Linked list Set New Public

A playlist is considered a repeating playlist if any of the songs contain a reference to a previous song in the playlist. Otherwise, the playlist will end with the last song which points to undefined.

Implement the method isRepeatingPlaylist that, efficiently with respect to time used, returns true if a playlist is repeating or false if it is not.

For example, the following code prints "true" as both songs point to each other.

let first = new Song("Hello");
let second = new Song("Eye of the tiger");

first.nextSong = second;
second.nextSong = first;

console.log(first.isRepeatingPlaylist());

Config

3min
  -  
Easy  
  -  
MCA

Node.js NPM Public

Consider the following package.json for a Node.js application:

{
  "name": "skill-measure-app",
  "private": true,
  "version": "1.0.0",
  "main": "lib/main.js",
  "scripts": {
    "build": "npm run cleanup & npm run test & npm run publish",
    "cleanup": "rm -fr ./lib",
    "test": "jest",
    "publish": "npm publish lib"
  },
  "dependencies": {
     "jest": "^23.0.1",
     "custom-package": "file:../custom-package"
  }
}

Select all the correct statements.

(Select all acceptable answers.)

Two Sum

30min
  -  
Easy  
  -  
CODE

JavaScript Algorithmic thinking Dictionary Public

Write a function that, when passed an array and a target sum, returns, efficiently with respect to time used, two distinct zero-based indices of any two of the numbers, whose sum is equal to the target sum. If there are no two numbers, the function should return null.

For example, findTwoSum([ 3, 1, 5, 7, 5, 9 ], 10) should return an array containing any of the following pairs of indices:

  • 0 and 3 (or 3 and 0) as 3 + 7 = 10
  • 1 and 5 (or 5 and 1) as 1 + 9 = 10
  • 2 and 4 (or 4 and 2) as 5 + 5 = 10
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Premium Questions for JavaScript Algorithms and Node.js 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.

Fahrenheit Converter, Shopping Cart, Weather Data, File Exists, Retry Request, Run Sequentially, Max Sum, Unique Product, Stream Transform, Package Declaration, Add Id, Hash Bug, Game Action, Arrange Promises, Unique Numbers
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.

Node.js Modules Events Asynchronous programming Async-await Promise JavaScript Algorithmic thinking Dictionary JSON Stream NPM Event Loop Bug fixing Event Emitter Exceptions
Recommended Job Roles

These are the job roles that we recommend for the JavaScript Algorithms and Node.js online test.

Back-End Developer
JavaScript Developer
Node.js Developer

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