Node.js Online Test
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The Node.js online test assesses candidates' knowledge of programming in the JavaScript language running on the Node.js environment and their ability to solve asynchronous problems.
It's an ideal test for pre-employment screening. A good Node.js developer needs to be able to solve problems using JavaScript and solve asynchronous problems using various programming patterns.
This online test requires candidates to solve coding problems in the Node.js environment and to find and fix bugs in a Node.js program.
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Free Sample Questions for 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.
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.)
Http Server
A company hosts its website and a product API on same server using the code below:
let http = require("http");
let commonResponse = function(response){
response.writeHead(200, { "Content-Type": "text/html" });
response.write("Request Completed");
}
let handleApi = function(req, res){
if(req.method == "POST"){
commonResponse(res);
res.end();
}
}
let handleWeb = function(req, res){
commonResponse(res)
res.end();
}
http.createServer(handleApi).listen(4513);
http.createServer(handleWeb).listen(4514);
Select all the correct answers.
(Select all acceptable answers.)
Create Emitter
The createEmitter function should create a new EventEmitter and register "open" and "close" event listeners. The callbacks for those events should be onOpen and onClose arguments, respectively. The opened and closed methods should raise the "open" and "close" events on the EventEmitter they will receive as emitter arguments. The callbacks should only be invoked once per emitter.
For example, after executing the following code, it should print "Opened!" and then "Closed!":
let emitter = createEmitter(
() => console.log("Opened!"), () => console.log("Closed!")
);
opened(emitter);
closed(emitter); 
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Premium Questions for 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, Stream Transform, Package Declaration, Add Id, Hash Bug, Game Action, Arrange PromisesCovered 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 Node.js online test.
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