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
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
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.)
Ensure
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.
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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, Stream Transform, Package Declaration, Add Id, Hash Bug, Game Action, Arrange Promises, Unique Numbers, FriendCovered 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.jsRecommended Job Roles
These are the job roles that we recommend for the JavaScript Algorithms and Node.js online test.
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